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The Horsepower of Aircraft Engines and Their Maximum Frontal Area
This adaptation of a Russian report reveals the effect of maximum cross section of an engine as well as the interest attaching to a choice not solely based on horsepower. The tabulation gives a comparison between different engines restored at 5,000 meters. Radial versus inverted in-line engines are also compared.
Date:
November 1936
Creator:
Précoul, Michel
System:
The UNT Digital Library
The Impact on Floats or Hulls During Landing as Affected by Bottom Width
For floats and hulls having V bottoms the impact force does not necessarily increase with increasing width. Therefore, the weight of the float landing gear, side walls, and other parts, and of the fuselage construction need not be increased with increasing bottom width, but the weight of the bottom construction itself, on the other hand, does not increase with increase in bottom width and is largely determined by the type of construction.
Date:
November 1936
Creator:
Mewes, E.
System:
The UNT Digital Library
Tests for the Determination of the Stress Condition in Tension Fields
"The present experiments treat the stress of actual tension fields within the elastic range. They give the magnitude of the flexural stresses due to wrinkling. They also disclose, particularly by slightly exceeded buckling load, the marked unloading - as compared with the tension-field theory - of the uprights as a result of the flexural stiffness of the web plate. The test sheets were clamped at the edges and brought to buckling through shearing and compressive stresses applied in the direction of the long sides" (p. 1).
Date:
November 1936
Creator:
Lahde, R. & Wagner, H.
System:
The UNT Digital Library
Impact of a vee-type seaplane on water with reference to elasticity
From Summary: "The theory developed by H. Wagner for the computation of the landing impact on water for a rigid float is extended to include elastic floats by introducing the concept of an equivalent rigid bottom to substitute for the actual elastic bottom."
Date:
November 1936
Creator:
Weinig, F.
System:
The UNT Digital Library
High-speed wind tunnels
Wind tunnel construction and design is discussed especially in relation to subsonic and supersonic speeds. Reynolds Numbers and the theory of compressible flows are also taken into consideration in designing new tunnels.
Date:
November 1936
Creator:
Ackeret, J.
System:
The UNT Digital Library