Some effects of frequency on the contribution of a vertical tail to the free aerodynamic damping of a model oscillating in yaw /
John D. Bird, Lewis R. Fisher, and Sadie M. Hubbard.

Description

Main Author

Bird, John D.

Related Names

Hubbard, Sadie M.
Fisher, Lewis R.
United States. National Advisory Committee for Aeronautics.

Language(s)

English

Published

Washington, D.C. : National Advisory Committee for Aeronautics, 1952.

Subjects

Wind tunnel testing.
Stability of airplanes.
Yawing (Aerodynamics)
Oscillations.
Vibration (Aeronautics) > Vibration (Aeronautics) / Damping.
Airplanes > Airplanes / Tail surfaces.
Airplanes > Airplanes / Models.

Summary

The damping in vaw and the directional stability of a model oscillating in yaw were measured tail-off and tail-on and compared with the values obtained by theoretical consideration of the unsteady lift associated with an oscillating vertical tail. A range of low frequencies comparable to those of the lateral motions of airplanes was covered. The analysis includes the effects of vertical-tail aspect ratio and the two-dimensional effects of compressibility.

Note

NACA TN No. 2657.
"April 1952."

Physical Description

39 p. : ill. ; 28 cm.

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