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  • Other Sources  (206)
  • LAUNCH VEHICLES AND SPACE VEHICLES  (169)
  • Inorganic Chemistry
  • Meteorology and Climatology
  • Seismology
  • 2000-2004
  • 1975-1979  (206)
  • 1935-1939
  • 1978  (206)
Collection
Source
Keywords
Publisher
Years
  • 2000-2004
  • 1975-1979  (206)
  • 1935-1939
Year
  • 1
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    Digital recording and analysis of broad-band seismic data at the Gräfenberg (GRF)-array (1978)
    In:  J. Geophys., Berlin, Conseil de l'Europe, vol. 44, no. 31, pp. 511-523, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1978
    Keywords: Seismic arrays ; Broad-band ; Seismology ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    The foreshock activity of the 1971 San Fernando earthquake, California (1978)
    In:  Bull. Seism. Soc. Am., Amsterdam, Schweizerbart'sche Verlagsbuchhandlung, vol. 68, no. 8, pp. 1265-1279, pp. L12S09, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Earthquake precursor: prediction research ; Fore-shocks ; Earthquake ; Earthquake precursor: statistical anal. of seismicity ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Determination of local magnitude, Ms-2dlus0, from strong-motion accelerograms (1978)
    In:  Bull. Seism. Soc. Am., Tokyo, Tokyo University, vol. 68, no. 2, pp. 471-485, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Strong motions ; Seismology ; BSSA ; local Magnitude
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Seismological aspects of the Guatemala earthquake of February 4, 1976 (1978)
    In:  J. Geophys. Res., Tokyo, Tokyo University, vol. 83, no. 2, pp. 3427-3434, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Earthquake ; Seismology ; JGR
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    The February 9, 1971 San Fernando earthquake: A study of source finiteness in teleseismic body waves (1978)
    In:  Bull. Seism. Soc. Am., Basel, Elsevier Science Publishers, vol. 68, no. 8, pp. 1-29, pp. L15S20, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Teleseismic events ; Earthquake ; Source ; Seismology ; Source parameters ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    A procedure for estimating lateral variations from low-frequency eigenspectra data (1978)
    In:  Geophys. J. R. astr. Soc., Reykjavík, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 52, no. 5, pp. 441-455, pp. TC1011, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Data analysis / ~ processing ; Spectrum ; Spectral analysis ; Inhomogeneity ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Quantification of earthquakes (1978)
    In:  Nature, Tokyo, Tokyo University, vol. 271, no. 2, pp. 411-414, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source parameters ; Magnitude ; Review article
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Transient and impulse responses of a one-dimensional linearly attenuating medium - II. A parametric study (1978)
    In:  Geophys. J. R. astr. Soc., Luxembourg, Conseil de l'Europe, vol. 52, no. 3, pp. 503-524, pp. B04202, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Attenuation ; Frequency ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    The Romanian earthquake of March 4, 1977. I. Rupture process inferred from fault-plane solution and multiple-event analysis (1978)
    In:  J. Geophys., Warszawa, American Geophysical Union, vol. 44, no. 1+2, pp. 203-218, pp. L08304, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Fracture ; Fault plane solution, focal mechanism ; Source ; Earthquake ; Seismology ; Moment tensor ; EUROPROBE (Geol. and Geophys. in eastern Europe) ; Muller ; Stoeckel ; Stockel
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    BIBLIOGRAPHY SEISMOLOGY
  • 10
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    Transfer functions for the seismic research observatory seismograph system (1978)
    In:  Bull. Seism. Soc. Am., New York, August, vol. 68, no. 1, pp. 501-512, pp. 1610, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Transfer function ; SRO ; Instruments ; Seismic networks ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    Dynamic support of the outer rise (1978)
    In:  Geophys. Res. Lett., Hannover, Conseil de l'Europe, vol. 5, no. 6, pp. 321-324, pp. L04301, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Seismology ; Stress ; GRL
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Slow earthquakes and stress redistribution (1978)
    In:  Nature, Basel, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 275, no. 4, pp. 599-602, pp. L14311, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Stress ; silent ; red ; Source
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    BIBLIOGRAPHY SEISMOLOGY
  • 13
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    Moment tensor inversions and source models (1978)
    In:  Geophys. J. R. astr. Soc., Leyden, Noordhoff International Publishing, vol. 52, no. B2, pp. 359-364, pp. B04306, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Moment tensor ; Source ; SModelling ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 14
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    Seismische Kriterien zur Standortwahl kerntechnischer Anlagen in der Bundesrepublik Deutschland (1978)
    Bundesanstalt f. Geowissenschaften und Rohstoffe
    In:  Hannover, Bundesanstalt f. Geowissenschaften und Rohstoffe, vol. 113, no. XVI:, pp. 1-14, (ISBN 1-56670-263-3)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Engineering geophys. ; Earthquake risk ; Earthquake hazard
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    BIBLIOGRAPHY SEISMOLOGY
  • 15
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    Dynamics in prestressed media with moving boundaries: A continuum theory of failure in solids (1978)
    In:  Geophys. J. R. astr. Soc., Amsterdam, Elsevier Scientific Publishing Company, vol. 52, no. 12, pp. 65-96, pp. 1390
    Details
    Publication Date: 1978
    Keywords: Seismology ; Fracture ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 16
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    Earthquake aftershocks as Green's functions (1978)
    In:  Geophys. Res. Letters, Münster, 3, vol. 5, no. 6, pp. 1-4, pp. L23301, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source ; Aftershocks ; Green's function ; GRL
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    BIBLIOGRAPHY SEISMOLOGY
  • 17
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    Q of the Earth (1978)
    In:  J. Geophys. Res., Luxembourg, EGS-Gauthier-Villars, vol. 83, no. 6717, pp. 5869-5882, pp. 2324
    Details
    Publication Date: 1978
    Keywords: Attenuation ; Absorption ; Scattering ; Seismology ; Earth rotation ; Earth tides ; Quality factor ; JGR
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    BIBLIOGRAPHY SEISMOLOGY
  • 18
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    The influence of rupture incoherence on seismic directivity (1978)
    In:  Bull. Seism. Soc. Am., Luxembourg, Conseil de l'Europe, vol. 68, no. 8, pp. 283-300, pp. L15S17, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source parameters ; Fracture ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 19
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    Regional variation of the scaling law of earthquake source spectra (1978)
    In:  Bull. Seism. Soc. Am., Taipei, Elsevier, vol. 68, no. 3, pp. 49-79, pp. TC1002, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source ; Spectrum ; Scaling ; Nuclear explosion ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 20
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    Radiant flux as a guide to relative seismic efficiency (1978)
    In:  Tectonophys., Dordrecht, D. Reidel, vol. 51, no. 5, pp. T39-T46, pp. TC5003, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Energy (of earthquakes) ; Source parameters ; Magnitude ; FROTH ; (abstract)
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    BIBLIOGRAPHY SEISMOLOGY
  • 21
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    Multivariate autoregressive representation of seismic signals with application to short-period discrimination (1978)
    In:  Bull. Seism. Soc. Am., Warszawa, EGS, vol. 68, no. 3, pp. 735-756, pp. L02611, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Filter- ; Auto-Regressive Moving Average-process ; Discrimination ; High frequency ... ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 22
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    Recent seismometrical works in Japan (1978)
    Center for Acad. Publ. Japan
    In:  Bull., Open-File Rept., Earthquake Precursors, Tokyo, Center for Acad. Publ. Japan, vol. 65, no. 1, pp. 69-78, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1978
    Keywords: Earthquake precursor: prediction research ; Seismology ; Project report/description ; Review article
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    BIBLIOGRAPHY SEISMOLOGY
  • 23
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    A study of the stability of solutions of the inverse problem of seismology in the geometrical optics approximation (1978)
    In:  Vychislitel'naya Seismogogiya, Luxembourg, Conseil de l'Europe, vol. 11, no. B7, pp. 111-133, pp. 2131, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Inversion
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    BIBLIOGRAPHY SEISMOLOGY
  • 24
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    Simulation of strong-motion displacements using surface-wave modal superposition (1978)
    In:  Bull. seism. Soc. Am., Washington, D.C., AGU, vol. 68, no. 1, pp. 907-922, pp. 2090, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Synthetic seismograms ; Surface waves ; NOModelling ; Layers ; Strong motions ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 25
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    Spectral analysis of the coda waves from local earthquakes (1978)
    In:  Bull. Earthq. Res. Inst. (Tokyo), Taipei, EGS, vol. 53, no. 12, pp. 1-48, pp. L12306, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Spectral analysis ; Seismology ; Scattering
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    BIBLIOGRAPHY SEISMOLOGY
  • 26
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    Seismological precursors to a magnitude 5 earthquake in the Central Aleutian Islands (1978)
    Center for Akad. Publ. Japan
    In:  Professional Paper, Earthquake Precursors, Tokyo, Center for Akad. Publ. Japan, vol. 4, no. 231, pp. 243-250, (ISBN 1-4020-1729-4)
    Details
    Publication Date: 1978
    Keywords: Earthquake precursor: prediction research ; Earthquake precursor: statistical anal. of seismicity ; Seismology ; Earthquake ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 27
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    Lokalisierung von Erdbeben in Medien mit beliebiger Geschwindigkeits-Tiefen-Verteilung unter Einschluß späterer Einsätze und die Hypozentren im Bereich des südlichen Oberrheingrabens von 1971 bis 1975 (1978)
    Fakultät für Physik
    In:  Dissertation, Universität Karlsruhe, Fakultät für Physik, vol. 10, no. WS-693 7-83, pp. 235-239, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Location ; Seismology ; Velocity ; Hypocentral depth ; Earth model, also for more shallow analyses ! ; Velocity depth profile
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    BIBLIOGRAPHY SEISMOLOGY
  • 28
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    Wavelet processing (1978)
    In:  Seventh Annual IPA Convention, Atlanta, Soc. Explorat. Geophys., vol. C 560, 183 pp., no. 8, pp. 480-482, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Waves ; Seismology ; Wavelet processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 29
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    A relation between seismic moment and stress drop of complex earthquakes (1978)
    USGS, Open file Rep. 78-380 and Inst. Phys. du Globe, Univ. Paris VI, IPG No. 275
    In:  Proc. Conf. III, Fault Mechanics and its Relation to Earthquake Prediction, Nat. Earthq. Hazard Reduction Program, 1-3.12.1977, Hanscom Air Force Base, USGS, Open file Rep. 78-380 and Inst. Phys. du Globe, Univ. Paris VI, IPG No. 275, vol. C 560, 183 pp., no. PL-TR-91-2212(II), pp. 319-337, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Stress ; Earthquake precursor: prediction research ; seismic Moment ; Stress drop ; FROTH, ; FRUMMEL
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    BIBLIOGRAPHY SEISMOLOGY
  • 30
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    Seismic monitoring at The Geysers geothermal field, California (1978)
    U.S. Geol. Surv.
    In:  Open-File Report, Potsdam, U.S. Geol. Surv., vol. C 560, 183 pp., no. 78 (?), pp. 1448-1451, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismic networks ; Geothermics ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 31
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    Untersuchungen zur Ortung von Herden seismischer Ereignisse, dargestellt an Beispielen aus einem Stationsnetz (1978)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Dissertation, Berichte Reihe A, Aachen, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 10, no. 6, pp. 429-433, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Seismic networks ; Location ; Induced seismicity ; Rock bursts (see also ERDSTOSS and GEBIRGSSCHLAG)
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    BIBLIOGRAPHY SEISMOLOGY
  • 32
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    Sonograms of SRO broad-band recorded events (1978)
    MIT Lincoln Lab.
    In:  Semiannual Technical Summary Report, Lexington, Mass., MIT Lincoln Lab., vol. 10, no. 87-437, pp. 9, 29-31, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; PIC ; son ; SRO ; Broad-band ; Seismic networks
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    BIBLIOGRAPHY SEISMOLOGY
  • 33
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    Focal mechanism studies in the New Madrid seismic zone (1978)
    In:  Bull. Seism. Soc. Am., Zagreb, Conseil de l'Europe, vol. 68, no. 4, pp. 1095-1102, pp. L02307, (ISSN 0343-5164)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Fault plane solution, focal mechanism ; Source parameters ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 34
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    Erdbeben in der Bundesrepublik Deutschland 1974 (1978)
    Seismologischen Zentralobservatorium Gräfenberg
    In:  Berichte der seismologischen Observatorien in der Bundesrepublik Deutschland mit einem Katalog wichtiger Weltbeben, Oslo, Seismologischen Zentralobservatorium Gräfenberg, vol. 10, no. 421, pp. 1-24, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Earthquake catalog ; Germany ; Seismic networks ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 35
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    Hypocenter location program HYPOInversionSE (1978)
    U. S. Geol. Surv.
    In:  Open-File Report, Hannover, U. S. Geol. Surv., vol. C 560, 183 pp., no. 78-694, pp. 1-113, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Location ; Hypocentral depth ; software ; USGS
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    BIBLIOGRAPHY SEISMOLOGY
  • 36
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    Ermittlung der Krustenstruktur in der Umgebung des seismologischen Zentralobservatoriums Erlangen aus Spektren von P-Wellen (1978)
    Inst. f. Geophys., Univ.
    In:  Diplomarbeit, Hamburg, Inst. f. Geophys., Univ., vol. C 560, 183 pp., no. PL-TR-91-2130, pp. 1-113, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: P-waves ; CRUST ; Seismology ; Seismic arrays ; Spectrum
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    BIBLIOGRAPHY SEISMOLOGY
  • 37
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    Steering laws for double-gimbal control-moment gyros (1978)
    In:  CASI
    Details
    Publication Date: 2006-03-02
    Description: Derivation of CMG steering laws was considered. The type of CMG considered was a double gimbal one which has a constant magnitude momentum vector. The equations for the generation of torque of an inertially fixed CMG are presented. To realize a particular commanded torque, the gimbal rates of the CMG must be specified. These gimbal rates are shown to be functions of gimbal angle orientation and the commanded torque. The conventional cross-product steering law was derived by minimizing a function which was the square of the magnitude of the error between the commanded torque and the realizable torque of the gyro. This steering law was severely dependent upon the inner gimbal angle. When the inner gimbal reaches 90 degrees, the cross product law requires infinite outer gimbal rates to realize finite torque values.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA, Washington Fourth Inter-Center Control Systems Conf.; p 157-173
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    NASA TECHNICAL REPORTS
  • 38
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    Structural alignment sensor (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Comparative Michelson interferometers are discussed as well as the operating range potential of a structural alignment sensor (SAS) which requires only one laser mode. Schematics are presented for the distance measurement logic, the basic SAS system, the SAS optical layout, the coarse measurement signal processor, and the measured range resolution.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 491-505
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    NASA TECHNICAL REPORTS
  • 39
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    Large antenna structure technologies required for 1985-2000 (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Topics discussed include: (1) material degradation as related to graphite composites and thermal control coatings; (2) thermal distortions considering postulated end-of-life conditions for extended lifetime (over 10 years); (3) examination of built-in shape versus actively controlled surfaces; (4) testing philosophy of super large antenna structures; and (5) examination of some possibilities which may require new or different technology.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 221-241
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    NASA TECHNICAL REPORTS
  • 40
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    High resolution soil moisture radiometer (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: An electrically scanned pushbroom phased antenna array is described for a microwave radiometer which can provide agriculturally meaningful measurements of soil moisture. The antenna size of 100 meters at 1400 MHz or 230 meters at 611 MHz requires several shuttle launches and orbital assembly. Problems inherent to the size of the structure and specific instrument problems are discussed as well as the preliminary design.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 177-194
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    NASA TECHNICAL REPORTS
  • 41
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    Designing structures for large space systems (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A questionnaire was compiled to identify technology deficiencies and point to research and development activities required in support of the large space structures program. Problem areas identified in setting criteria for such structures include improved flightworthiness, satisfying cost constraints, assessing new loads and environments, improved mission performance and life, and preservation of the ecology.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 141-152
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    NASA TECHNICAL REPORTS
  • 42
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    Overview of the large space systems technology program (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A multicenter management approach which provides the opportunity to work across many disciplines and match the roles and expertise of various NASA facilities is described for the large space system technology (LSST) program which was established to define, develop, and verify structural concepts, analyses, and design procedures for a range of sizes and configurations to be deployed, erected, or fabricated in orbit during projected space missions utilizing shuttle in the 1985 to 2000 time period. Benefits from the program include reduced costs for transporting structures having low mass, high packageability, and multimission capabilities. Technologies identified by the LSST program will contribute to the solutions of problems in other sectors of the economy.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Large Space Systems Technol., Vol. 1; p 1-17
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    NASA TECHNICAL REPORTS
  • 43
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    Viking continuation mission support (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The DSN support of Viking spacecraft activities from 1 July through 31 August 1978 is reported. The DSN Viking Command and Tracking support is included.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: The Deep Space Network; p 7-11
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    NASA TECHNICAL REPORTS
  • 44
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    Technology for accurate surface and attitude control of a large spaceborne antenna and microwave system (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Problems associated with controlling a large diameter (200 - 300 m) spaceborne antenna and microwave system operating at frequencies in the range from 20 GHz to at least 300 GHz are addressed. Such large structures must point to any new target and settle in one hour, and have control surface accuracy to 50 microns rms. Critical technologies required to enable system development by 1990 to 2000 for radio/ radar astronomy, orbiting Deep Space rela satellite, SETI, very long base interferometry, and earth looking radiometry applications are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 441-456
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    USAF antenna on-orbit assembly (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Structural concepts, upper stage evaluations, and orbiter packing are discussed for spacecraft having 300 ft to 1000 ft diameter sensors. Techniques are examined for stowing, deploying, and transferring to high earth orbit expandable hex, expanding tetrahedral ring, and fold out truss configurations. Upper stage final candidate configurations and their influence on antenna design selection are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 369-401
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  • 46
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    Application of geo-truss erectable antenna 1985 - 2000 systems (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The geo-truss concept provides a natural structural element to use in the deployment or fabrication of large systems. Three systems conceptually proposed and discussed are: (1) direct TV broadcast to half-time zone, Alaska dnd Hawaii; (2) deep space communication satellite; and (3) coastal water surveillance radar satellite.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 335-367
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  • 47
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    Inflight optical measurement of antenna surfaces (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A technology base was developed for a wide variety of applications oriented sensors to meet requirements for the fabrication, assembly, test, surface figure monitoring, and ultimately surface figure active control of large space antennas. An optical sensor technique is described which establishes an ideal centerline at each beam during fabrication or later during assembly. Deviations from the centerline, either in lateral deformation or in twist, are measured to produce limit warnings or to evoke active control at the building machine.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 457-489
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  • 48
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    Shuttle crew station astronaut interfaces (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The current shuttle orbiter configuration and its crew module and payload bay accomodations for work and off duty activities are described. The capability of the remote manipulator system and provisions to support extravehicular activities are examined with emphasis on flight crew activities for orbital flight tests and for early operational space transportation system flights. Facilities used to verify crew interfaces are also described.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 71-140
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  • 49
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    Design considerations for large space antennas (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Performance requirements and costs for transportation, fabrication, and orbital assembly are the drivers in the design of large space antennas will range in size from approximately 30 m to 1 km in diameter and include radiometers, multibeam lens antennas, and microwave power transmission systems. Research and development is required to define comprehensive structural criteria for specific missions, to determine optimized geometries for truss elements and truss configurations and to establish requirements for joint design with consideration of tolerances, load transfer, thermal compatibility, and assembly and disassembly. Candidate structural elements, materials systems for the low pressure rapid cure of advanced composite materials, and various on orbit assembly and fabrication techniques must also be developed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 195-219
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  • 50
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    Future large space systems opportunities: A case for space-to-space power? (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Applications and options for beaming power to near-earth space users from a central space power platform are examined. The cost effectiveness of on-board versus remote power transfer is examined for orbital transfer propulsion systems. Performance characteristics are projected for advanced power generation, transmission, and receiver systems for the 1990's. Major technological development needs are identified with particular emphasis on large space systems technology.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Large Space Systems Technol., Vol. 1; p 507-531
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  • 51
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    Orbiting Deep Space Relay Station (ODSRS): DSN feasibility study report (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Future tracking requirements and advantages over earth based stations justify the design of an orbiting, free flying very long base interferometry system to provide high resolution maps of celestial radio sources. Moderate technology development is required for the following: 30 meter to 60 meter diameter deployable parabolic antennas with less than 2 millimeters surface tolerance; a momentum wheel attitude control system with few arc/second accuracy; solar power design; a hydrogen maser atomic frequency standard; and the cryogenic receivers. The system must meet current Deep Space tracking capabilities as a minimum, and the technology must be compatible with system performance growth in the future. System lifetime must be ten years without major refurbishing.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 153-176
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  • 52
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    Technology needs and opportunities for future NASA missions (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The process of forecasting NASA's future needs and missions as well as the technologies relevant to the projected requirements is examined with emphasis on large space system technology. A technology model (set of generic systems) is presented to assist in the development of technology program options, to identify major technology areas requiring concentrated effort, and to serve as an evaluation criteria for current technology programs. The model is applied to considerations of near and far term opportunities for exploration of the universe, global services, utilization of the space environment, and the space transportation system.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Large Space Systems Technol., Vol. 1; p 19-69
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  • 53
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    On space deployable antennas and electronics: Plans and programs (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Technology plans are presented for developing deployable reflectors having diameters of 30 to 300 meters and surface accuracies of several millimeters for L and X band applications, as well as for the electronic subsystems required for such large structures. An electromagnetic analysis method for predicting the radio frequency performance of large reflectors involves projecting field points onto an aperture plane. The data points in the aperture plane are quantized to produce contours of constant phase and amplitude. Far field patterns are then calculated using reduced computer storage.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Large Space Systems Technol., Vol. 1 (date]; p 289-333
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  • 54
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    Large space deployable antenna systems (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The design technology is described for manufacturing a 20 m or larger space erectable antenna with high thermal stability, high dynamic stiffness, and minimum stowed size. The selected approach includes a wrap rib design with a cantilever beam basic element and graphite-epoxy composite lenticular cross section ribs. The rib configuration and powered type operated deploying mechanism are described and illustrated. Other features of the parabolic reflector discussed include weight and stowed diameter characteristics, structural dynamics characteristics, orbit thermal aperture limitations, and equivalent element and secondary (on axis) patterns. A block diagram of the multiple beam pattern is also presented.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 1; p 243-288
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  • 55
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    The Nimbus 7 spacecraft system (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The Nimbus mission objectives, the scientific objectives of the Nimbus 7 experiments are presented. The component subsystems and experiments of the spacecraft are described. Information on data products and their availability are provided.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: The Nimbus 7 User's Guide; p 1-18
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  • 56
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    Applications of the hybrid coordinate method to the TOPS autopilot (1978)
    In:  CASI
    Details
    Publication Date: 2006-03-02
    Description: Preliminary results are presented from the application of the hybrid coordinate method to modeling TOPS (thermoelectric outer planet spacecraft) structural dynamics. Computer simulated responses of the vehicle are included which illustrate the interaction of relatively flexible appendages with an autopilot control system. Comparisons were made between simplified single-axis models of the control loop, with spacecraft flexibility represented by hinged rigid bodies, and a very detailed three-axis spacecraft model whose flexible portions are described by modal coordinates. While single-axis system, root loci provided reasonable qualitative indications of stability margins in this case, they were quantitatively optimistic when matched against responses of the detailed model.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA, Washington Fourth Inter-Center Control Systems Conf.; p 127-156
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  • 57
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    Electrodynamic tether (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Areas of scientific investigation which are suitable for study with an Electrodynamic Tether are considered and recommendations for an evolutionary development program which ties together many of the studies are presented. The essential component of an Electrodynamic Tether System is an insulated, conducting tether. A voltage monitor and a current controller then provide a means of performing the majority of the measurements and experiments involved in the scientific investigations. The scientific areas of study which were identified include: potential difference measurements between widely spaced (10-100 km) regions in the ionosphere; plasma disturbance generation and propagation; wave injection studies in the VLF to ULF (micropulsation) region; and the current-voltage characteristic of a spherical satellite.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Alabama Univ. UAH(NASA Workshop on the Use of a Tethered Satellite System; p 163-175
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  • 58
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    Viking extended mission support (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The Deep Space Network (DSN) support of Viking spacecraft activities and the DSN Viking command and tracking support are reported. The status of DSN Mark 3 data (MDS) subsystem implementation project related Viking testing is included.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: The Deep Space Network; p 4-5
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  • 59
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    Seasat-A opens new phase in earth observations (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The data output of the Seasat-A, the first satellite designed specifically for oceanographic observation, is described. Wave height and direction, ice distribution, surface wind speed and direction, ocean-surface temperature, and atmospheric water content will be monitored by the satellite. Imaging radar, microwave scatterometer, microwave radiometer and visual and infrared radiometer experiments are included in the Seasat-A observing program. Two types of orbits have been developed: a near-repeat cycle of three days, and a near-repeat cycle of 25 days. Both orbit types offer fine coverage (18.5 km crossing separations) of the earth. Synthetic aperture radar data on computer-compatible tapes and geophysical data records available through the Seasat-A mission are described.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Astronautics and Aeronautics; 16; June 197
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  • 60
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    Planning for airport access: An analysis of the San Francisco Bay area. Three subsystem designs (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The outcomes of three analytical studies are presented. Areas of concentration presented include: (1) Zonal Airport Transit System designed to address the problem of airport access options, (2) the issues and problems of airport parking and circulation, and (3) the problems of effectively providing airport access information.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Planning for Airport Access; p 189-250
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  • 61
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    Electrical power loss from high-voltage power circuits through plasma leakage (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Methods are proposed for constructing a solar power satellite system which would decrease electric current leakage through plasma.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 1057-1070
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  • 62
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    The Precision Self-Metering Structure (PSMS) (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Large, precise space systems such as space lasers, space telescopes, and space power transmitters cannot be realized until certain fundamental meteorological problems are first solved. It must be shown: (1) how a spatially distributed system of elements can be tied together in terms of a master coordinate system, (2) how master coordinates for these distributed elements can be determined with great accuracy, and (3) how mechanical integration of the elements to desired master coordinates of such accuracy can be achieved. Solutions to these problems are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 1021-1055
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  • 63
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    Maneuvering and pointing flexible vehicles (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: With the development of techniques to assemble large structures in orbit, new control system problems evolve. These large structures are typically characterized by lower structural frequencies, but no compromises are made regarding maneuver and structural settling times. Techniques are discussed which will allow these large structures to be maneuvered and pointed quickly with minimum settling times.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 988-1020
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  • 64
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    Control concepts for large space structures (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A comprehensive program to develop the required control technology was started at Rockwell International's Space Division. A few of the concepts under consideration for attitude, figure, and vibration control of large, flexible space systems are highlighted. In addition, an overview of the Space Division's independent research and development (IR&D) is presented. The direction of the IR&D program was influenced by requirements for electro-optical systems, shuttle erectable structures and satellite power stations.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 935-957
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  • 65
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    Large structure control development concepts (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Viewpoints are presented on large structure control evolving from the solar sail study conducted at JPL. The objective is to make optimum use of insights gained in the study in order to assess required large structure control developments.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 903-934
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  • 66
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    Materials technology development for long life large space systems (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Large Space Systems materials requirements are discussed in terms of types of materials, critical properties, and environmental stability. An outline is given of the materials technology development that will be needed to meet these requirements.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 867-901
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  • 67
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    Spacecraft charging and plasma interaction implications for large space systems (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Specific discharge mechanisms, plasma interactions, and scale effects associated with very large spacecraft are studied. The large area, low density character, and extensive use of non-conducting materials is thought to have a major impact on the performance and survivability of many large space systems.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Large Space Systems Technol., Vol. 2; p 833-865
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  • 68
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    Applicability of thermoplastic composites for space structures (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The discussion defines a thermoplastic resin and compares the structural and environmental properties and the fabrication and repairability of the thermoplastic composite with a typical epoxy composite. Low labor costs exhibited by the thermoplastic composites make them a priority consideration for use in space structure.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 775-832
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  • 69
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    Geostationary platform structural system (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A discussion is presented on the following engineering considerations for a geostationary platform: (1) structural configuration and design, (2) thermal characteristics, (3) flight load considerations and (4) assembly approaches.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 707-749
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  • 70
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    MSFC presentation charts on geostationary platform (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A concept is presented of a geostationary platform. The concept takes the form of antennas and other payloads mounted on a strongback structure. The utilization and benefits of the platform are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 683-705
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  • 71
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    System dynamics and simulation of LSS (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Large Space Structures have many unique problems arising from mission objectives and the resulting configuration. Inherent in these configurations is a strong coupling among several of the designing disciplines. In particular, the coupling between structural dynamics and control is a key design consideration. The solution to these interactive problems requires efficient and accurate analysis, simulation and test techniques, and properly planned and conducted design trade studies. The discussion presented deals with these subjects and concludes with a brief look at some NASA capabilities which can support these technology studies.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 751-774
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  • 72
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    Efficient concepts for large erectable space structures (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The status of Langley Research Center development of the nestable column concept is reviewed including results of member and truss component tests, and planned assembly studies. In addition, more recent studies of alternative member concepts are presented. Preliminary results on relative efficiency of several types of truss-type columns are compared and future test plans discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Large Space Systems Technol., Vol. 2; p 627-656
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  • 73
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    Equipment installation on large area space systems (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The requirements and concepts for the installation of various types of mission and subsystem equipment on large area space systems are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 569-596
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  • 74
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    Structural/thermal considerations for design of large space platform structures (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A method is described for placing a large, STS-compatible platform on orbit utilizing a construction method employing both deployable and erectable structures. A multifunctional mechanism is used for deployable structures and an on-orbit assembly is used for erectable structures. Also analyses are discussed which assess the thermal distortion of a simple open truss and a more complex truss.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Langley Res. Center Large Space Systems Technol., Vol. 2; p 597-626
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  • 75
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    Initial results of the NAVSTAR GPS NTS-2 satellite (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Goddard Space Flight Center Proc. of the 9th Ann. Precise Time and Time Interval (PTTI) Appl. and Planning Meeting; p 177-200
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  • 76
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    Transit satellite system timing capabilities (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Current time transfer capabilities of the Transit Satellite System are reviewed. Potential improvements in the changes in equipment and operational procedures using operational satellites are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Goddard Space Flight Center Proc. of the Tenth Ann. Precise Time and Time Interval (PTTI) Appl. and Planning Meeting; p 511-535
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  • 77
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    A drag-free Lo-Lo satellite system for improved gravity field measurements (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: At very low altitudes, the effect of atmospheric drag results in drastically reduced orbit lifetimes and considerable uncertainty in satellite motions. The concept suggested herein employs a DISturbance COmpensation System (DISCOS) on each of a pair of satellites at very low altitudes to provide refined measurements of the earth's gravitational field. The DISCOS maintains the satellites in orbit and essentially eliminates motion uncertainties due mostly to drag and to a lesser extent from solar radiation pressure. By a closed-loop measurement of the relative rangerate between the two low satellites, one can determine the earth's gravitational field with a considerably greater accuracy than could be obtained by tracking a single satellite.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Ohio State Univ. Appl. of Geodesy to Geodyn., an Intern. Symp.; p 213-219
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  • 78
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    Communication satellite technology: State of the art and development opportunities (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Opportunities in communication satellite technology are identified and defined. Factors that tend to limit the ready availability of satellite communication to an increasingly wide group of users are evaluated. Current primary limitations on this wide utilization are the availability of frequency and/or synchronous equatorial satellite positions and the cost of individual user Earth terminals. The former could be ameliorated through the reuse of frequencies, the use of higher frequency bands, and the reduction of antenna side lobes. The latter limitation requires innovative hardware, design, careful system design, and large scale production.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-159977 , ATR-78(7735)-1
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  • 79
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    Solar power satellite system definition study. Part 1: Midterm briefing (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The solar power satellite systems are defined and analyzed. Included are areas of space construction, rectennal construction, rectenna siting, and the aluminum satellite structure.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-160369 , D180-24872-1 , DRL-T-1487 , DRD-MA-732T
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  • 80
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    Satellite Power Systems (SPS) concept definition study. Volume 4: SPS point design definition (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The satellite power systems point design concept is described. The concept definition includes satellite, ground and space systems, and their relationships. Emphasis is placed on the definition of the GaAlAs photovoltaic satellite system. The major subsystems of the satellite system including power conversion, power distribution and control, microwave, attitude control and stationkeeping, thermal control, structures, and information management and control are discussed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-150683 , SD-78-AP-0023-4-VOL-4
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    Dynamics explorer: Interface definition study, volume 1 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Work done in response to the work statement wherein a specific deliverable was not identified but where design and analysis tasks were identified is reported. The summary and baseline change list is included along with design notes for the spacecraft system, thermal subsystem, power subsystem, communications subsystem, plasma wave instrument interface definition, and the structure.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-166742 , AE-R-4270-VOL-1
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  • 82
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    Pioneer Venus probe models instrumented prop tests (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Models of both the small and large Pioneer Venus probes were dropped from a helicopter to simulate the conditions of Mach and Reynolds numbers to be encountered by the probes upon entry into the Venus atmosphere. The models were dropped at an average Mach number of .10 and at an average Reynolds number of 2.84 million for the small probe and 2.90 million for the large probe. After the large amplitude launching oscillations were damped, the small probe oscillations in angle of attack and in sideslip were generally less than 2 degrees. The large probe oscillations were generally less than 10 degrees. Both exhibited distinct frequencies. The motion of the small probe in a place perpendicular to the z axis was random while the large probe rotated (corkscrewed) at 1.1 cycles per second about the z axis. The average drag coefficients of the probe models were .714 for the small probe and .663 for the large probe.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-164298 , KU-FRL-333-1
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  • 83
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    Hypersonic Airbreathing Missile (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A hypersonic airbreathing missile using dual mode scramjet engines for propulsion is described. The fuselage is constructed of a material with a high heat sink capacity and is covered with a thermal protective shield and lined with an internal insulating blanket. The engine airframe integration uses the flat lower portion of the lower fuselage to precompress the air entering the scramjet engines. The precompression of air entering the scramjet inlets increases as the angles of attack. This feature results in a highly maneuverable missile which can accelerate as it banks into a turn.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
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  • 84
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    Design definition study of the Earth radiation budget satellite system (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Instruments for measuring the radiation budget components are discussed, and the conceptual design of instruments for the Earth Radiation Budget Satellite System (ERBSS) are reported. Scanning and nonscanning assemblies are described. The ERBSS test program is also described.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-158934
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  • 85
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    Continuation of the compendium of applications technology satellite and communications technology satellite user experiments 1967-1977, volume 2 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Approximately 453 reports, papers, and articles catalogued into an information retrieval system, covering communications experiments and demonstrations conducted, utilizing the Communications Technology Satellite and the Applications Technology Satellites 1, 3, 5, and 6 are listed.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-135416-VOL-2 , UDR-TR-78-67-VOL-2
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  • 86
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    Summary of Voyager Design and Flight Loads (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Estimates of flight loads for Voyager 1 and Voyager 2 are summarized and compared to the Voyager design loads obtained from the shock spectra/impedance method and to the loads obtained using space vehicle transient loads analysis. These estimates were obtained by using the measured flight accelerations at the launch vehicle/spacecraft interface as forcing functions for the Voyager mathematical model. Based on these data, an assessment of the shock spectra/impedance loads method used for Voyager is presented. The following conclusions were reached: (1) the shock spectra approach provided reasonable conservative design loads for Voyager, (2) care has to be executed to insure that all critical events are accounted for in constructing shock spectra envelopes, (3) the selection of critical events is not always obvious, especially for those flight events wherein the spacecraft dynamic characteristics are important, and (4) the success of the method is strongly dependent on the analysts' experience and judgement.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-157566 , JPL-PUB-78-74
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  • 87
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    Solar power satellite system definition study. Part 3: Preferred concept system definition (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A concise but complete system description for the preferred concept of the Solar Power Satellite System is presented. Significant selection decisions included the following: (1) single crystal silicon solar cells; (2) glass encapsulated solar cell blankets; (3) concentration ratio 1; (4) graphite composite materials for primary structure; (5) electric propulsion for attitude control; (6) klystron RF amplifier tubes for the transmitter; (7) one kilometer diameter transmitter with a design trans mission link output power of 5,000 megawatts; (8) construction in low earth orbit with self-powered transfer of satellite modules to geosynchronous orbit; and (9) two-stage winged fully reusable rocket vehicle for transportation to low earth orbit.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-151746 , D180-24071-1-PT-3
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  • 88
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    Thermal performance of gaseous-helium-purged tank-mounted multilayer insulation system during ground-hold and space-hold thermal cycling and exposure to water vapor (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An experimental investigation was conducted to determine (1) the ground-hold and space-hold thermal performance of a multilayer insulation (MLI) system mounted on a spherical, liquid-hydrogen propellant tank and (2) the degradation to the space-hold thermal performance of the insulation system that resulted from both thermal cycling and exposure to moisture. The propellant tank had a diameter of 1.39 meters (4.57ft). The MLI consisted of two blankets of insulation; each blanket contained 15 double-aluminized Mylar radiation shields separated by double silk net spacers. Nineteen tests simulating basic cryogenic spacecraft thermal (environmental) conditions were conducted. These tests typically included initial helium purge, liquid-hydrogen fill and ground-hold, ascent, space-hold, and repressurization. No significant degradation of the space-hold thermal performance due to thermal cycling was noted.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TP-1114 , E-9443
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  • 89
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    Purging of a tank-mounted multilayer insulation system by gas diffusion (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The investigation was conducted on a multilayer insulation (MLI) system mounted on a spherical liquid hydrogen propellant tank. The MLI consisted of two blankets of insulation each containing 15 double-aluminized Mylar radiation shields separated by double silk net spacers. The gaseous nitrogen initially contained within the MLI system and vacuum chamber was purged with gaseous helium introduced both underneath the MLI and into the vacuum chamber. The MLI panels were assumed to be purged primarily by means of gas diffusion. Overall, test results indicated that nitrogen concentrations well below 1 percent could be achieved everywhere within the MLI system. Typical times to achieve 1 percent nitrogen concentration within the MLI panels ranged from 69 minutes at the top of the tank to 158 minutes at the bottom of the tank. Four space-hold thermal performance tests indicated no significant thermal degradation of the MLI system had occurred due to the purge tests conducted. The final measured heat input attributed to the MLI was 7.23 watts as compared to 7.18 watts for the initial baseline thermal performance test.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TP-1127 , E-9286
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  • 90
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    An atlas of GEOS-3 radar altimeter data for data buoy comparison studies (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An atlas is compiled to identify times and dates when GEOS-3 altimeter data was taken in the vicinity of data buoys. The time period covered is from GEOS launch to April 9, 1978. Two buffer areas are considered for each of the various buoy locations to determine the simultaneity of GEOS and buoy data. The two buffer areas are ? or - 0.25 degrees and ? or - 1 degree.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-73276
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  • 91
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    GEOS-3 coherent C-band tracking data reduction and analysis (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The availability of a coherent C-Band transponder on an orbiting vehicle has permitted the development of calibration techniques for C-Band radars. Prior coherent tracking was limited to test vehicles in powered flight or skin tracking of orbiting spacecraft. The pulse Doppler range rate data available concurrently and independently with normal range and angle data provides an extremely useful data set for assessing the internal consistency of the radars measurements, particularly when coupled with a trajectory well constrained by orbit dynamics. In order to further assess the precision of the range rate data, a technique was developed to numerically integrate the rate measurements into a pseudo-range data set showing extremely low noise and high sensitivity to systematic radar errors. Evaluation of integrated range data led to improvements in calibration of both the rate and conventional range data. In particular, proper evaluation of the very sensitive integrated ranges required the development of a processing correction for beacon delay variation with signal strength, a significant error in the conventional ranging data.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-73278
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  • 92
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    GEOS-3 C-Band radar investigations (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The absolute accuracy of instrumentation radar systems, refined methods of calibrating these systems, and the techniques employed in processing the associated data. A world-wide network of C-Band instrumentation radars augmented by lasers and other tracking instrumentation systems were used. The NASA WFC AN/FPQ-6 instrumentation radar and the AN/FPS-16 instrumentation radar also located at NASA WFC were the primary instruments used in the accuracy and calibration evaluations. The results achieved at WFC were then disseminated to other Ranges where they were verified, augmented and used as part of routine operations.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-156841
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  • 93
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    Station position results using concentrated C-band tracking of GEOS-3 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Station positions for the GEOS 3 C Band tracking network were estimated using C Band and laser data taken during a two-week concentrated tracking period. The C Band stations are located primarily in the continental United States and on Western Atlantic islands. The network, however, included stations in Hawaii, in West Germany, and on Kwajalein atoll. Estimated accuracies for the recovered positions are 2 m for the continental U. S. and Atlantic sites, 5 m for Hawaii, and 10 m for Kwajalein. The dominant contributor to these uncertainties is geopotential model error. Thus, the C Band/laser data set could be used for more accurate center-of-mass positioning of a continental network of stations.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-73277
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  • 94
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    Design, fabrication and testing of a CFA for use in the solar power satellite (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A crossed field amplifier was designed to meet the performance objectives of high signal to noise ratio, an efficiency of 85%, a CW microwave power output of 5-8 kW, and a frequency of 2450 MHz. The signal to noise ratio achieved was better than 69 db/MHz in a 2000 MHz band centered on the carrier. High circuit efficiency of 97% and a sharp knee on voltage current characteristic were achieved. The basic problem of maintaining good transfer of heat to the external radiator while providing for adequate connections to input and output was solved. Maximum efficiency achieved was 70.5% and gain and power level were below objectives. An investigation of causes of reduced performance indicated the poor field pattern in the cathode anode interaction area of the tube was a major cause.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-159410 , PT-5228
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  • 95
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    Launch Summary for 1973 - 1977 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A summary listing launches of sounding rockets, artificial earth satellies, and space probes between January 1, 1973 and December 31, 1977 is presented.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-79398 , NSSDC/WDC-A-R/S-78-02
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  • 96
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    Catalog of Viking mission data (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: This catalog announces the present/expected availability of scientific data acquired by the Viking missions and contains descriptions of the Viking spacecraft, experiments, and data sets. An index is included listing the team leaders and team members for the experiments. Information on NSSDC facilities and ordering procedures, and a list of acronyms and abbreviations are included in the appendices.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-79397 , NSSDC/WDC-A-R/S-78-01
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  • 97
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    Long range orbital error estimation for applications satellites (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A method of optimum orbital averaging was employed to study the long range accuracy potential of polar orbiting applications satellites. This approach involved the determination of the boundary conditions of one set of differential equations of motion by adjusting the initial conditions in a least square sense with the use of data generated by another set of differential equations of motion.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-78076
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  • 98
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    Preliminary Concept, Specifications, and Requirements for a Zero-Gravity Combustion Facility for Spacelab (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The preliminary concept, specifications, and requirements of a reusable zero gravity combustion facility (0-GCF) for use by experimenters aboard the spacelab payload of the space transportation system (STS) orbiter are described. The facility will be amenable to any mission of the STS orbiter in which a spacelab habitable segment and pallet segment are integral and for which orbital mission plans specify induced accelerations of 0.0001 g or less for sufficiently long periods so as not to impact experiment performance.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-TM-78910 , E-9645
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  • 99
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    Tetherline system for orbiting satellites (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A system for tethering one orbiting space vehicle to another was designed so that a tetherline between the vehicles is controlled by a motorized reel which in turn is controlled to deploy, retrieve, or maintain a constant line length while effecting a stabilizing influence on the line. This is accomplished by applying a tension to the line which takes into account the instantaneous length of the line, rate of change of the length of the line, and certain constants which vary depending upon the mode of operation, deployment, retrieval, or station keeping.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
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  • 100
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    Heliogyro Preliminary Design, Phase 2 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are 12 blades in the Heliogyro design, and each blade is envisioned to be 8 meters in width and 7,500 meters in length. The blades are expected to be composed primarily of a thin membrane constructed of material such as Kapton film with an aluminum reflective coating on one side and an infrared emissive coating on the other. The present Phase 2 Final Report covers work done on the following six topics: (1) Design and analysis of a stowable circular lattice batten for the Heliogyro blade. (2) Design and analysis of a biaxially tensioned blade panel. (3) Definition of a research program for micrometeoroid damage to tendons. (4) A conceptual design for a flight test model of the Heliogyro. (5) Definition of modifications to the NASTRAN computer program required to provide improved analysis of the Heliogyro. (6) A User's Manual covering applications of NASTRAN to the Heliogyro.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA-CR-157128 , MS404-5
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