An exploratory investigation of some types of aeroelastic instability of open and closed bodies of revolution mounted on slender struts /
Aeroelastic instability phenomena of isolated open and closed rigid bodies of revolution free to move under elastic restraint have been investigated experimentally at low speeds by means of models suspended at zero angles of attack and yaw on slender flexible struts from a wind-tunnel ceiling. Three...
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
National Advisory Committee for Aeronautics,
[1954]
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| Series: | Technical note (United States. National Advisory Committee for Aeronautics) ;
3308 |
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| Summary: | Aeroelastic instability phenomena of isolated open and closed rigid bodies of revolution free to move under elastic restraint have been investigated experimentally at low speeds by means of models suspended at zero angles of attack and yaw on slender flexible struts from a wind-tunnel ceiling. Three types of instability were observed - flutter similar to classical bending-torsion flutter, divergence, and an uncoupled oscillatory instability which consists in nonviolent continous or intermittent small-amplitude oscillations involving only angular deformations. The speeds at which this oscillatory instability starts were found to be as low as about one-third of the speed at flutter or divergence and to depend on the shape of the body, particularly that of the afterbody, and on the relative location of the elastic axis |
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| Item Description: | NACA TN No. 3308 This document supersedes the recently declassified NACA RM L53E07, "An exploratory investigation of some types of aeroelastic instability of open and closed bodies of revolution mounted on slender struts" by S. A. Clevenson, E. Widmayer, Jr., and Franklin W. Diederich, 1953 |
| Physical Description: | 44 p. : ill ; 27 cm |
| Bibliography: | Includes bibliographical references |