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Langley Full-scale Tunnel Investigation of the Factors Affecting the Directional Stability and Trim Characteristics of a Fighter-type Airplane by Sweberg, Harold H. is a nonfiction available to read on EtoBox.

What is Langley Full-scale Tunnel Investigation of the Factors Affecting the Directional Stability and Trim Characteristics of a Fighter-type Airplane about?

Tests were made in the Langley full-scale tunnel of the Grumman XF6F-4 airplane in order to investigate the factors that affect the directional stability and trim characteristics of a typical fighter-type airplane. Eight representative flight conditions were investigated in detail. The separate contributions of the wing-fuselage combination, the vertical tail, and the propeller to the directional stability of the airplane in each condition were determined. Extensive air-flow surveys of sidewash angle and dynamic-pressure ratio along a line coincident with the rudder hinge line were made for each condition investigated to aid in evaluating the slipstream effects. The data obtained from the air-flow surveys were also used to investigate methods for calculating the contribution of the vertical tail to the airplane directional stability. The results of the tests showed that, for the conditions investigated, the directional stability of the airplane was smallest for the gliding condition with flaps retracted and was greatest for the wave-off condition with flaps deflected 50°. The variation of sidewash angle at the vertical tail with angle of yaw was destabilizing for all conditions inv

Who reads Langley Full-scale Tunnel Investigation of the Factors Affecting the Directional Stability and Trim Characteristics of a Fighter-type Airplane?

Author

Sweberg, Harold H.

Publisher

Langley Memorial Aeronautical Laboratory, 1945.

Published

1945

Language

EN

Category

nonfiction