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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
A theoretical study of the effect of forward speed on the free-space sound-pressure field around propellers

A theoretical study of the effect of forward speed on the free-space sound-pressure field around propellers

Date: January 1, 1954
Creator: Garrick, I. E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theoretical study of the effect of upstream transpiration cooling on the heat-transfer and skin-friction characteristics of a compressible, laminar boundary layer

A theoretical study of the effect of upstream transpiration cooling on the heat-transfer and skin-friction characteristics of a compressible, laminar boundary layer

Date: May 1, 1957
Creator: Rubesin, Morris W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Theoretical study of the lateral frequency response to gusts of a fighter airplane, both with controls fixed and with several types of autopilots

Theoretical study of the lateral frequency response to gusts of a fighter airplane, both with controls fixed and with several types of autopilots

Date: March 1, 1956
Creator: Adams, James J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theoretical study of the lifting efficiency at supersonic speeds of wings utilizing indirect lift induced by vertical surfaces

A theoretical study of the lifting efficiency at supersonic speeds of wings utilizing indirect lift induced by vertical surfaces

Date: March 26, 1956
Creator: Rossow, Vernon J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theoretical study of the moment on a body in a compressible fluid

A theoretical study of the moment on a body in a compressible fluid

Date: January 1, 1939
Creator: Kaplan, Carl
Description: The extension to a compressible fluid of Lagally's theorem on the moment on a body in an incompressible fluid and Poggi's method of treating the flow of compressible fluids are employed for the determination of the effect of compressibility on the moment of an arbitrary body. Only the case of the two-dimensional subsonic flow of an ideal compressible fluid is considered. As examples of the application of the general theory, two well-known systems of profiles are treated; namely the elliptic profile and the symmetrical Joukowski profiles with sharp trailing edges. The effect of compressibility on the position of the center of pressure is also discussed. Several numerical examples of both the elliptic and the Joukowski profiles are given.
Contributing Partner: UNT Libraries Government Documents Department
Theoretical study of the transonic lift of a double-wedge profile with detached bow wave

Theoretical study of the transonic lift of a double-wedge profile with detached bow wave

Date: December 1, 1952
Creator: Vincenti, Walter G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Theoretical study of the transonic lift of a double-wedge profile with detached bow wave

Theoretical study of the transonic lift of a double-wedge profile with detached bow wave

Date: January 1, 1954
Creator: Vincenti, Walter G
Description: A theoretical study is described of the aerodynamic characteristics at small angle of attack of a thin, double-wedge profile in the range of supersonic flight speed in which the bow wave is detached. The analysis is carried out within the framework of the transonic (nonlinear) small-disturbance theory, and the effects of angle of attack are regarded as a small perturbation on the flow previously calculated at zero angle. The mixed flow about the front half of the profile is calculated by relaxation solution of a suitably defined boundary-value problem for transonic small-disturbance equation in the hodograph plane (i.e., the Tricomi equation). The purely supersonic flow about the rear half is found by an extension of the usual numerical method of characteristics. Analytical results are also obtained, within the framework of the same theory, for the range of speed in which the bow wave is attached and the flow is completely supersonic.
Contributing Partner: UNT Libraries Government Documents Department
Theoretical study of the tunnel-boundary lift interference due to slotted walls in the presence of the trailing-vortex system of a lifting model

Theoretical study of the tunnel-boundary lift interference due to slotted walls in the presence of the trailing-vortex system of a lifting model

Date: April 7, 1953
Creator: Matthews, Clarence W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Theoretical study of the tunnel-boundary lift interference due to slotted walls in the presence of the trailing-vortex system of a lifting model

Theoretical study of the tunnel-boundary lift interference due to slotted walls in the presence of the trailing-vortex system of a lifting model

Date: January 1, 1955
Creator: Matthews, Clarence W
Description: The equations presented in this report give the interference on the trailing-vortex system of a uniformly loaded finite-span wing in a circular tunnel containing partly open and partly closed walls, with special reference to symmetrical arrangements of the open and closed portions. Methods are given for extending the equations to include tunnel shapes other than circular. The rectangular tunnel is used to demonstrate these methods. The equations are also extended to nonuniformly loaded wings.
Contributing Partner: UNT Libraries Government Documents Department
Theoretical study of various airplane motions after initial disturbance

Theoretical study of various airplane motions after initial disturbance

Date: June 1, 1938
Creator: Haus, FR
Description: The present investigation may be considered as preliminary to the study of automatic stabilizers. We have sought to determine first how an airplane of average characteristics reacts against the principal disturbances it may encounter. Without entering into the general study of automatic stabilizers, the present work suggests the idea of a stabilizer whose sensitive member would be a wind vane or pressure plate. The elements considered as variable were the coefficients of static stability - that is, the derivatives of the coefficients of the moments with respect to the angles of attack and of yaw; these angles may be determined by the vanes.
Contributing Partner: UNT Libraries Government Documents Department