The Effect 0f Aeroelasticity Upon Energy Retrieval 0f A Sailplane Penetrating A Gust

Authors

  • H. Ulv Mai

Keywords:

Atmospheric physics, Aerodynamics

Abstract

The paper, prepared for and prcsented at the XIX OSTIV Congress, August 2-10, 1985, in Rieti, Italy, discusses the altitude and energy altitude gains of a sailplane penetrating a gust, taking into account the rigidbody motions, and wing bending and twisting. The aerodynamic calculations were performed using quasi-steadystrip theory. Gust penetration characteristics of the 15 m span PIK-20 and the 20 m span ALCOR sailplanes have been simulated by means of computer programs and effect of various parameters on the altitude and energy altitude gains are discussed. The simulations show that aeroelasticity has an appreciable effect on the gust penetration behavior of sailplanes, and that the main contributing factors are wing bending in connection with rigid-body pitching.

Downloads

Issue

Vol. 10 No. 4 (1986)

Section

Articles

License

CLEARANCE AND LICENSE TO PUBLISH:

This paper is UNCLASSIFIED (for public reasons) and has been cleared by the appropriate agencies, company and government. This paper represents original work by the author(s). No portion of the material is covered by a prior copyright; or for any portion copyrighted, the author has obtained permission for its use.
I hereby license OSTIV to publish this paper and to use it for all of OSTIV's current and future publications uses.