An exploratory investigation of some types of aeroelastic instability of open and closed bodies of revolution mounted on slender struts

S. A. Clevenson, E. Widmayer, Jr., Franklin W. Diederich
naca-tn-3308
Nov 1954

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.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1954/naca-tn-3308.pdf