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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Results 15361 - 15370 of 17,147
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Mathematical and experimental investigation of heat control and power increase in air-cooled aircraft engines

Mathematical and experimental investigation of heat control and power increase in air-cooled aircraft engines

Date: November 1, 1929
Creator: Gosslau, F
Description: In order to understand the numerical relations between the air velocity, temperature of the cylinder walls, heat dissipation, cylinder dimensions and type of construction an experimental plant was installed in the Siemens and Halske laboratory. The experimental cylinder was exposed to the air stream of a wind tunnel. The compression chamber was heated by an electrically heated oil bath kept constantly in motion by a stirrer. The wall temperatures were measured by thermocouples. The air stream was produced a seven-watt blower. The air flowed through a current rectifier (honeycomb), diffuser, air chamber with quieting sieves and a nozzle.
Contributing Partner: UNT Libraries Government Documents Department
The Saunders "Cutty Sark" commercial seaplane (British) : a high-wing monoplane flying boat

The Saunders "Cutty Sark" commercial seaplane (British) : a high-wing monoplane flying boat

Date: November 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some studies on the aerodynamic effect of the gap between airplane wings and fuselages

Some studies on the aerodynamic effect of the gap between airplane wings and fuselages

Date: November 1, 1929
Creator: Ober, Shatswell
Description: The general result indicated by this study is that if desirable from any viewpoint the gap between wing and fuselage may be closed without detrimental aerodynamic effects, and with a given monoplane there is less drag if the wing is directly on top of the fuselage than if it is parasol.
Contributing Partner: UNT Libraries Government Documents Department
Technical details in the structural development of Rohrbach seaplanes

Technical details in the structural development of Rohrbach seaplanes

Date: November 1, 1929
Creator: Mathias, Gotthold & Holzapfel, Adolf
Description: The recent trial flights and acceptance tests of the Rohrbach "Romar," the largest seaplane in the world, have yielded results fully confirming the principles followed in its development. Its take-off weight of 19,000 kg, its beating the world record for raising the greatest useful load to 2000 m by almost 2500 kg and its remarkable showing in the seaworthiness tests are the results of intelligent researches, the guiding principles of which are briefly set forth in this article.
Contributing Partner: UNT Libraries Government Documents Department
Unsymmetrical forces in an airplane cell

Unsymmetrical forces in an airplane cell

Date: November 1, 1929
Creator: Vogt, R
Description: This paper calls attention to the desirability of expanding airplane building regulations to include proof of safety for cases of unsymmetrical loading, at least in the structural members which are thereby specially stressed.
Contributing Partner: UNT Libraries Government Documents Department
The A. B. Flygindustri "K 37" (Swedish Junkers) : A Low-Wing All-Metal Military Airplane

The A. B. Flygindustri "K 37" (Swedish Junkers) : A Low-Wing All-Metal Military Airplane

Date: October 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Bristol "Bulldog" (British): A Single-Seat All-Steel Fighter

The Bristol "Bulldog" (British): A Single-Seat All-Steel Fighter

Date: October 1, 1929
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The drag and interference of a nacelle in the presence of a wing

The drag and interference of a nacelle in the presence of a wing

Date: October 1, 1929
Creator: Jacobs, Eastman N
Description: A wing interference investigation was conducted to determine why the N.A.C.A. cowling did not yield the expected increase in speed when adapted to the outboard nacelles of trimotored airplanes.
Contributing Partner: UNT Libraries Government Documents Department
The effect of the wings of single engine airplanes on propulsive efficiency as shown by full scale wind tunnel tests

The effect of the wings of single engine airplanes on propulsive efficiency as shown by full scale wind tunnel tests

Date: October 1, 1929
Creator: Weick, Fred E & Wood, Donald H
Description: An investigation was conducted to determine the effect of the wings on propulsive efficiency. The wings are shown to cause a reduction of 1 percent to 3 percent in propulsive efficiency, which is about the same for monoplane as well as biplane wings.
Contributing Partner: UNT Libraries Government Documents Department
Experiments with a wing model from which the boundary is removed by suction

Experiments with a wing model from which the boundary is removed by suction

Date: October 1, 1929
Creator: Schrenk, Oskar
Description: The present report deals with a series of tests made for the purpose of improving flow conditions about wings by applying the suction principle (increase of the lift coefficient and reduction of the drag about very thick wing sections). Though not conclusive, the report contains interesting results.
Contributing Partner: UNT Libraries Government Documents Department