Considerations on the effect of wind-tunnel walls on oscillating air forces for two-dimensional subsonic compressible flow /
Harry L. Runyan and Charles E. Watkins.

Description

Main Author

Runyan, Harry L.

Related Names

Watkins, Charles E.
United States. National Advisory Committee for Aeronautics.

Language(s)

English

Published

Washington, D.C. : National Advisory Committee for Aeronautics, 1951.

Subjects

Oscillations.
Flutter (Aerodynamics)
Vibration (Aeronautics)
Air flow.
Wind tunnel walls.

Summary

This paper treats the effect of wind-tunnel walls on the oscillating two-dimensional air forces in a compressible medium. The walls are simulated by the usual method of placing impages at appropriate distances above and below the wing. An important result shown is that, for certain conditions of wing frequency, tunnel height, and Mach number, the tunnel and wing may form a resonant system so that the forces on the wing are greatly changed from the condition of no tunnel walls.

Note

NACA TN No. 2552.
"December 1951."

Physical Description

18 p. : ill. ; 28 cm.

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