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  • Other Sources  (5)
  • 1940-1944  (2)
  • 1930-1934  (3)
Collection
Source
Publisher
Years
Year
  • 1
    facet.materialart.
    Unknown
    Fire prevention on aircraft (1931)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The following discussion is at first restricted to the light-oil engines now in use. We shall consider how far it is possible to reduce fire hazards by changes in the design of the engines and carburetors and in the arrangement of the fuel pipes.
    Type: NACA-TM-628
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Resonance vibrations of aircraft propellers (1932)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: On the basis of the consideration of various possible kinds of propeller vibrations, the resonance vibrations caused by unequal impacts of the propeller blades appear to be the most important. Their theoretical investigation is made by separate analysis of torsional and bending vibrations. This method is justified by the very great difference in the two natural frequencies of aircraft propeller blades. The calculated data are illustrated by practical examples. Thereby the observed vibration phenomenon in the given examples is explained by a bending resonance, for which the bending frequency of the propeller is equal to twice the revolution speed.
    Type: NACA-TM-657
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 3
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    Unknown
    Propeller Tip Flutter (1932)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The present report is limited to a case of tip flutter recognized by experience as being important. It is the case where outside interferences force vibrations upon the propeller. Such interferences may be set up by the engine, or they may be the result of an unsymmetrical field of flow.
    Type: NACA-TM-683
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 4
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    Unknown
    Testing of high-octane fuels in the single-cylinder airplane engine (1940)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: One of the most important properties of aviation fuels for spark-ignition engines is their knock rating. The CFR engine tests of fuels of 87 octane and above does not always correspond entirely to the actual behavior of these fuels in the airplane engine. A method is therefore developed which, in contrast to the octane number determination, permits a testing of the fuel under various temperatures and fuel mixture conditions. The following reference fuels were employed: 1) Primary fuels; isooctane and n-heptane; 2) Secondary fuels; pure benzene and synthetic benzine.
    Type: NACA-TM-931
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Produktionsbiologische Untersuchungen im Arkonabecken und den Binnengewässern von Rügen (1940)
    Institut für Meereskunde
    Details
    Publication Date: 2023-08-16
    Type: Article , NonPeerReviewed
    Format: text
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    PAPER (OCEANREP)
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