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  • 1
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    Seismische Bodenunruhe und Wetter (1952)
    In:  Umschau, Milano, California Institute of Technology Pasadena, vol. 52, no. 6, pp. 646-648, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; NOISE ; Meteorology
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Waves from blasts recorded in Southern California (1952)
    In:  Trans., Am. Geophys. Union, Milano, California Institute of Technology Pasadena, vol. 33, no. 6, pp. 427-431, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Waves ; Seismometer ; Seismology ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    SV and SH (1952)
    In:  Trans., Am. Geophys. Union, Milano, California Institute of Technology Pasadena, vol. 33, no. 6, pp. 573-584, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Waves ; SV waves ; Shear waves ; Seismology ; SH waves ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Surface motion in SV and SH (1952)
    In:  Bull. Geol. Soc. Am., Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 63, no. 6, pp. 1353, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Surface waves ; Waves ; Seismology ; Shear waves
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Wave velocities in the outer part of the earth's mantle (1952)
    In:  Nature, Milano, California Institute of Technology Pasadena, vol. 170, no. 6, pp. 289-290, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Velocity analysis ; Seismology ; earth mantle
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Earthquakes in California (1952)
    In:  Looking Forward, Bull. of The Humanists, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 1, no. 6, pp. 9-11, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Progress report, Seismological Laboratory, California Institute of Technology, 1951 (1952)
    In:  Trans., Am. Geophys. Union, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 33, no. 6, pp. 759-762, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Project report/description ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Seismizität der Erde (1952)
    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 369-375, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    Earthquakes: past and future (1952)
    In:  Engineers and Architects Sphere, Milano, California Institute of Technology Pasadena, vol. 1, no. 6, pp. 9-11, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 10
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    Erdbebenwellen (1952)
    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 375-384, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Waves
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    Arvin-Tehachapi earthquake, July 21, 1952 (1952)
    California Division of Mines San Francisco
    In:  Mineral Information Service, New York, California Division of Mines San Francisco, vol. 5, no. Nov., pp. 1-8, pp. L03601, (ISSN: 1340-4202)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Earthquake
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Bibliography of microseisms (1952)
    Division of Earthsciences, Seismological Laboratory, California Institute of Technology
    In:  Contract AF 19(122)436, Pasadena, Division of Earthsciences, Seismological Laboratory, California Institute of Technology, vol. 10, no. GL-TR-89-0230, pp. 1-94, (ISBN 3-933346-037)
    Details
    Publication Date: 1952
    Keywords: Handbook of geophysics ; Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 13
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    Preliminary Investigation of Cyclic De-Icing of an Airfoil Using an External Electric Heater (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An investigation was conducted in the NACA Lewis icing research tunnel to determine the characteristics and requirements of cyclic deicing of a 65,2-216 airfoil by use of an external electric heater. The present investigation was limited to an airspeed of 175 miles per hour. Data are presented to show the effects of variations in heat-on and heat-off periods, ambient air temperature, liquid-water content, angle of attack, and. heating distribution on the requirements for cyclic deicing. The external heat flow at various icing and heating conditions is also presented. A continuously heated parting strip at the airfoil leading edge was found necessary for quick, complete, and consistent ice removal. The cyclic power requirements were found to be primarily a function of the datum temperature and heat-on time, with the other operating and meteorological variables having a second-order effect. Short heat-on periods and high power densities resulted in the most efficient ice removal, the minimum energy input, and the minimum runback ice formations. The optimum chordwise heating distribution pattern was found to consist of a uniform distribution of cycled power density in the impingement region. Downstream of the impingement region the power density decreased to the limits of heating which, for the conditions investigated, extended from 5.7 percent chord on the upper surface of the airfoil to 8.9 percent chord on the lower surface. Ice removal did not take place at a heater surface temperature of 32 F; surface temperatures of approximately 50 to 100 F were required to effect removal. Better de-icing performance and greater energy savings would be possible with a heater having a higher thermal efficiency.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-RM-E51J30
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 14
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    General Correlation of Temperature Profiles Downstream of a Heated Air Jet Directed at Various Angles to Air Stream (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An experimental investigation was conducted to determine the temperature profiles downstream of heated air jets directed at angles of 90 deg, 60 deg, 45 deg, and 30 deg to an air stream. The profiles were determined at two positions downstream of the jet as a function of jet diameter, jet density, jet velocity, free-stream density, free-stream velocity, jet total temperature, orifice flow coefficient, and jet angle. A method is presented which yields a good approximation of the temperature profile in terms of the flow and geometric conditions.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2855
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 15
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    Preliminary Results of Cyclical De-Icing of a Gas-Heated Airfoil (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An NACA 65(sub 1)-212 airfoil of 8-foot chord was provided with a gas-heated leading edge for investigations of cyclical de-icing. De-icing was accomplished with intermittent heating of airfoil segments that supplied hot gas to chordwise passages in a double-skin construction. Ice removal was facilitated by a spanwise leading-edge parting strip which was continuously heated from the gas-supply duct. Preliminary results demonstrate that satisfactory cyclical ice removal occurs with ratios of cycle time to heat-on period (cycle ratio) from 10 to 26. For minimum runback, efficient ice removal, and minimum total heat input, short heat-on periods of about 15 seconds with heat-off periods of 260 seconds gave the best results. In the range of conditions investigated, the prime variables in the determination of the required heat input for cyclical ice removal were the air temperature and the cycle ratio; heat-off period, liquid water content, airspeed, and angle of attack had only secondary effects on heat input rate.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-RM-E51J29
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    NASA TECHNICAL REPORTS
  • 16
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    Impingement of Water Droplets on an NACA 65(sub 1) -212 Airfoil at an Angle of Attack of 4 Deg (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The trajectories of droplets in the air flowing past an NACA 651-212 airfoil at an angle of attack of 40 were determined. The collection efficiency, the area of droplet impingement, and the rate of droplet impingement were calculated from the trajectories and are presented herein.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-RM-E52B12
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    NASA TECHNICAL REPORTS
  • 17
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    Simple graphical solution of heat transfer and evaporation from surface heated to prevent icing (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2799
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    NASA TECHNICAL REPORTS
  • 18
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    Progress report, Seismological Laboratory, California Institute of Technology, 1950 (1951)
    In:  Trans. Am. Geophys. Union, Beijing, Pergamon, vol. 32, no. 3-4, pp. 749-753, pp. 1246
    Details
    Publication Date: 1951
    Keywords: Seismology ; Project report/description ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 19
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    Travel times from blasts in Southern California (1951)
    In:  Bull. Seism. Soc. Am., Milano, California Institute of Technology Pasadena, vol. 41, no. 6, pp. 5-12, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1951
    Keywords: Travel time ; Seismology ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 20
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    Earthquakes (1951)
    In:  Istanbul Teknik Üniversitesi Bülteni, Milano, California Institute of Technology Pasadena, vol. 4, no. 6, pp. 66-70, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1951
    Keywords: Seismology ; Seismicity ; Istanbul
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    BIBLIOGRAPHY SEISMOLOGY
  • 21
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    Larger shocks of 1950 (1951)
    California Institute of Technology Pasadena
    In:  Seismological Laboratory Bulletin, Milano, California Institute of Technology Pasadena, vol. 1950, no. 6, pp. 102-103, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1951
    Keywords: Earthquake catalog ; Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 22
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    Surface waves recorded by a Benioff vectorial seismograph (1951)
    In:  Bull. Geol. Soc. Am., Milano, California Institute of Technology Pasadena, vol. 62, no. 6, pp. 1527, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1951
    Keywords: Surface waves ; Seismology ; Seismometer
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    BIBLIOGRAPHY SEISMOLOGY
  • 23
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    PKKP, P'P', and the earth's core (1951)
    In:  Trans., Am. Geophys. Union, Milano, California Institute of Technology Pasadena, vol. 32, no. 6, pp. 373-390, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1951
    Keywords: Waves ; earth Core ; Seismology ; P-waves ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 24
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    Revised travel times in Southern California (1951)
    In:  Bull. Seism. Soc. Am., Milano, California Institute of Technology Pasadena, vol. 41, no. 6, pp. 143-164, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1951
    Keywords: Travel time ; Seismology ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 25
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    Earthquakes and rock creep, part 1 (1951)
    In:  Bull. Seism. Soc. Am., Beijing, Pergamon, vol. 41, no. 3-4, pp. 184-190, pp. 1246
    Details
    Publication Date: 1951
    Keywords: Fracture ; Rock mechanics ; Rheology ; Seismology ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 26
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    Evidence from deep-focus earthquakes (1951)
    Dover Publ.
    In:  Professional Paper, Internal constitution of the earth - Physic of the earth, Dover, 439 pp., Dover Publ., vol. 7, no. XI:, pp. 305-313, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1951
    Keywords: Seismology ; Hypocentral depth
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    BIBLIOGRAPHY SEISMOLOGY
  • 27
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    The elastic constants in the interior of the earth (1951)
    Dover Publ.
    In:  Professional Paper, Internal constitution of the earth - Physic of the earth, Dover, 439 pp., Dover Publ., vol. 7, no. XIV:, pp. 364-381, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1951
    Keywords: Elasticity ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 28
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    Observations and theory of microseisms (1951)
    Am. Meteor. Soc.
    In:  Professional Paper, Compendium of Meteorology, Dover, 439 pp., Am. Meteor. Soc., vol. 7, no. XVI:, pp. 1303-1311, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1951
    Keywords: Micro seismicity ; Seismology ; NOISE
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    BIBLIOGRAPHY SEISMOLOGY
  • 29
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    Earthquakes in North America (1951)
    Smithsonian Institute
    In:  Ann. Rep. 1950, Toronto, Smithsonian Institute, vol. 10, no. GL-TR-89-0230, pp. 303-316, (ISBN 3-933346-037)
    Details
    Publication Date: 1951
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 30
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    Comparison of Heat Transfer from Airfoil in Natural and Simulated Icing Conditions (1951)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An investigation of the heat transfer from an airfoil in clear air and in simulated icing conditions was conducted in the NACA Lewis 6- by 9-foot icing-research tunnel in order to determine the validity of heat-transfer data as obtained in the tunnel. This investiation was made on the same model NACA 65,2-016 airfoil section used in a previous flight study, under similar heating, icing, and operating conditions. The effect of tunnel turbulence, in clear air and in icingwas indicated by the forward movement of transition from laminar to turbulent heat transfer. An analysis of the flight results showed the convective heat transfer in icing to be considerably different from that measured in clear air and. only slightly different from that obtained in the icing-research tunnel during simulated icing.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2480
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 31
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    A General Correlation of Temperature Profiles Downstream of a Heated-Air Jet Directed Perpendicularly to an Air Stream (1951)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An experimental investigation was conducted to determine the temperature profile downstream of a heated-air jet directed perpendicularly to an air stream. The profiles were determined at several positions downstream of the jet as functions of jet density, jet velocity, freestream density, free-stream velocity, jet temperature, and orifice flow coefficient. A method is presented which yields a good approximation of the temperature profile in terms of dimensionless parameters of the flow and geometric conditions.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2466
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 32
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    An Empirical Method Permitting Rapid Determination of the Area, Rate and Distribution of Water-Drop Impingement on an Airfoil of Arbitrary Section at Subsonic Speeds (1951)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An empirical method for the determination of the area, rate, and distribution of water-drop impingement on airfoils of arbitrary section is presented. The procedure represents an initial step toward the development of a method which is generally applicable in the design of thermal ice-prevention equipment for airplane wing and tail surfaces. Results given by the proposed empirical method are expected to be sufficiently accurate for the purpose of heated-wing design, and can be obtained from a few numerical computations once the velocity distribution over the airfoil has been determined. The empirical method presented for incompressible flow is based on results of extensive water-drop. trajectory computations for five airfoil cases which consisted of 15-percent-thick airfoils encompassing a moderate lift-coefficient range. The differential equations pertaining to the paths of the drops were solved by a differential analyzer. The method developed for incompressible flow is extended to the calculation of area and rate of impingement on straight wings in subsonic compressible flow to indicate the probable effects of compressibility for airfoils at low subsonic Mach numbers.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2476
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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