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  • Other Sources  (16)
  • Seismology  (8)
  • Aircraft Propulsion and Power  (5)
  • Witterung  (3)
  • Industrial Chemistry
  • Inorganic Chemistry
  • 1950-1954  (16)
  • 1954  (16)
  • 1
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    Effects of low - velocity layers (1954)
    In:  Geofisica Pura e Applicata, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 28, no. 6, pp. 1-10, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1954
    Keywords: Low velocity layer ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Slip direction in earthquakes calculated from observed ratios SH/SV (1954)
    In:  Bull. Geol. Soc. Am., Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 65, no. 6, pp. 1342, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1954
    Keywords: Seismology ; Source parameters ; Shear waves ; Polarization
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Larger shocks of 1953 (1954)
    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 1953, no. 6, pp. 98, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1954
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Low-velocity layers in the earth's mantle (1954)
    In:  Bull. Geol. Soc. Am., Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 65, no. 6, pp. 337-347, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1954
    Keywords: Low velocity layer ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Seismicity of Southern California (1954)
    In:  Bull. California Division of Mines San Francisco, Luxembourg, National Academy of Sciences of the USA, vol. 170, no. 3-5, pp. 19-25, pp. B05311, (ISSN: 1340-4202)
    Details
    Publication Date: 1954
    Keywords: Seismicity ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Progress report, Seismological Laboratory, California Institute of Technology, 1953 (1954)
    In:  Trans. Am. Geophys. Union, Beijing, Pergamon, vol. 35, no. 3-4, pp. 979-987, pp. 1246
    Details
    Publication Date: 1954
    Keywords: Seismology ; Project report/description ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Zum Massenflug der Blattläuse (1954)
    In:  Gesunde Pflanzen 6; p.166-168
    Details
    Publication Date: 1954
    Description: Der Autor erklärt das massenhafte Auftreten verschiedener Blattlausarten Ende Mai 1954 mit trockenem warmem Wetter und nennt 19°C Tagesmitteltemperatur und Schwachwindigkeit als Fluginitiator für die Blattläuse. KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Berlin, Hannover, Bonn ; 1954 ; Pflanzenschädling ; Witterung
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    BIBLIOGRAPHY INKA BB
  • 8
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    Das Zusammenwirken der Wachstumsfaktoren bei der Ertragsbildung (1954)
    In:  Zeitschr. Acker- und Pflanzenbau 98: 145-186
    Details
    Publication Date: 1954
    Description: Zusammenwirken von N, P und K bei der Ertragsbildung KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland, Versuchsstationen ; 1900-1953 ; Ertrag ; Witterung ; Düngung
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    BIBLIOGRAPHY INKA BB
  • 9
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    Die Vergilbungskrankheit der Rübe (1954)
    In:  Mitteilungen aus der Biologischen Zentralanstalt für Land- und Forstwirtschaft Berlin-Dahlem, Heft 79
    Details
    Publication Date: 1954
    Description: Zusammenfassender Bericht über die in den Jahren 1947-1952 in Westdeutschland durchgeführten Untersuchungen zur Epidemiologie, Verbreitung, wirtschaftlichen Bedeutung und Bekämpfung dieser Virose KATASTER-BESCHREIBUNG: Hauptbefallsgebiete sind solche, mit mildem Winterklima, in denen die langjährigen Mittelwerte des kältesten Monats Januar nicht unter 0°C abfallen; KATASTER-DETAIL: Delta T(Sommer)+ und Delta Nied (Sommer) -, dann Delta t(Individualentwicklung der Überträger)- und Massenentwicklung (der Überträger) +; Delta T(Sommer)+ und Delta Nied (Sommer)-, dann Vergilbungsschäden +; Delta T - und Delta Lichtintensität -, dann Wirkung des Virus -;
    Keywords: Westdeutschland ; 1947-1952 ; Infektionskrankheiten ; Ertrag ; Niederschlag ; Pflanzenkrankheit ; Pflanzenschädling ; Temperatur ; Trockenheit ; Wachstum ; Witterung ; Düngung
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    BIBLIOGRAPHY INKA BB
  • 10
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    Study of the seismic waves SKS and SKKS (1954)
    In:  Bull. Seism. Soc. Am., Tokyo, Railway Tech. Res. Inst., vol. 44, no. 4, pp. 39-56, pp. L06615, (ISSN: 1340-4202)
    Details
    Publication Date: 1954
    Keywords: Waves ; Seismology ; earth Core ; Travel time ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    Seismicity of the Earth and Associated Phenomena (1954)
    Princeton Univ. Press
    In:  Princeton, New Jersey, 9 + 310 pp., Princeton Univ. Press, vol. 7, no. XVI:, pp. 385-389, (ISBN 0-12-305355-2)
    Details
    Publication Date: 1954
    Keywords: Textbook of geophysics ; Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Investigation of Noise Field and Velocity Profiles of an Afterburning Engine (1954)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Sound pressure levels, frequency spectrum, and jet velocity profiles are presented for an engine-afterburner combination at various values of afterburner fuel - air ratio. At the high fuel-air ratios, severe low-frequency resonance was encountered which represented more than half the total energy in the sound spectrum. At similar thrust conditions, lower sound pressure levels were obtained from a current fighter air craft with a different afterburner configuration. The lower sound pressure levels are attributed to resonance-free afterburner operation and thereby indicate the importance of acoustic considerations in afterburner design.
    Keywords: Aircraft Propulsion and Power
    Type: NACA-RM-E54G07
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 13
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    An Investigation in the Ames 40- by 80-Foot Wind Tunnel of a YT-56A Turboprop Engine Incorporating a Decoupler and a Controlled-Feathering Device (1954)
    In:  CASI
    Details
    Publication Date: 2019-07-11
    Description: An investigation of a decoupler and a controlled-feathering device incorporated with the YT-56A turboprop engine has been made to determine the effectiveness of these devices in reducing the high negative thrust (drag) which accompanies power failure of this type of engine. Power failures were simulated by fuel cut-off, both without either device free to operate, and with each device free to operate singly. The investigation was made through an airspeed range from 50 to 230 mph. It was found that with neither device free to operate, the drag levels realized after power failures at airspeeds above 170 mph would impose vertical tail loads higher than those allowable for the YC-130, the airplane for which the test power package was designed. These levels were reached in approximately one second. The maximum drag realized after power failure was not appreciably altered by the use of the decoupler although the decoupler did put a limit on the duration of the peak drag. The controlled-feathering device maintained a level of essentially zero drag after power failure. The use of the decoupler in the YT-56A engine complicates windmilling air-starting procedures and makes it necessary to place operating restrictions on the engine to assure safe flight at low-power conditions,
    Keywords: Aircraft Propulsion and Power
    Type: NACA-RM-SA54I09
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 14
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    Preliminary Altitude Operational Characteristics of a J57-P1 Turbojet Engine (1954)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: The operational characteristics of a J57-P1 turbojet engine have been investigated at altitudes between 15,000 and 66,000 feet in the Lewis altitude wind tunnel. Included in this study is a discussion of fuel nozzle coking, the altitude operating limits with and without the standard engine control, the compressor surge characteristics, and the engine starting and windmilling characteristics. Severe circumferential turbine outlet temperature gradients which occurred at high altitude as a result of fuel nozzle coking were alleviated by the manufacturer's change in the fuel flow divider schedule and in a nozzle gasket material. Compressor air bleed is required to prevent surge of the outboard compressor in the low engine speed region. The maximum altitude at which the engine was operated without the control was about 66,000 feet at 0.8 flight Mach number and at a reduced engine speed to avoid compressor surge; with the engine control in operation, the altitude operating limit is reduced to approximately 59,000 feet. The maximum altitude at which the engine was started was about 40,000 feet.
    Keywords: Aircraft Propulsion and Power
    Type: NACA-RM-SE54C31
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 15
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    Design and Evaluation of a Turbojet Exhaust Simulator, Utilizing a Solid-Propellant Rocket Motor, for use in Free-Flight Aerodynamic Research Models (1954)
    In:  CASI
    Details
    Publication Date: 2019-07-11
    Description: A method has been developed for modifying a rocket motor so that its exhaust characteristics simulate those of a turbojet engine. The analysis necessary to the design is presented along with tests from which the designs are evaluated. Simulation was found to be best if the exhaust characteristics to be duplicated were those of a turbojet engine at high altitudes and with the afterburner operative.
    Keywords: Aircraft Propulsion and Power
    Type: NACA-RM-L54I15
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 16
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    Experimental Permeability Measurements on a Strut-Supported Transpiration-Cooled Turbine Blade with Stainless-Steel Shell made by the Federal-Mogul Corporation under Bureau of Aeronautics Contract N0as 51613-C (1954)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: A turbine blade with a porous stainless-steel shell sintered to a supporting steel strut has been fabricated for tests at the NACA by Federal-Mogul Corporation under contract from the Bureau of Aeronautics, Department of the Navy. The apparent permeability of this blade, on the average, more nearly approaches the values specified by the NAGA than did two strut-supported bronze blades in a previous investigation. Random variations of permeability in the present blade are substantialy greater than those of the bronze blades, but projected improvements in certain phases of the fabrication process are expected to reduce these variations.
    Keywords: Aircraft Propulsion and Power
    Type: NACA-RM-SE54D29
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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