국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	THERMOSTRUCTURAL ANALYSIS OF UNCONVENTIONAL WING STRUCTURES OF A HYPER-X HYPERSONIC FLIGHT RESEARCH VEHICLE FOR THE MACH 7 MISSION
저자	William L. Ko and Leslie Gong
Keyword	Buckling temperature magnification factors; Hyper-X wing; Irregular panels; Non-uniform temperature loading; Thermal buckling
URL	http://www.dfrc.nasa.gov/DTRS/2001/PDF/H-2453.pdf
보고서번호	NASA-TP-210398
발행년도	2001
출처	NASA Dryden Flight Research Center
ABSTRACT	Heat transfer, thermal stresses, and thermal buckling analyses were performed on the unconventional wing structures of a Hyper-X hypersonic flight research vehicle (designated as X-43) subjected to nominal Mach 7 aerodynamic heating. A wing midspan cross section was selected for the heat transfer and thermal stress analyses. Thermal buckling analysis was performed on three regions of the wing skin (lower or upper); 1) a fore wing panel, 2) an aft wing panel, and 3) a unit panel at the middle of the aft wing panel. A fourth thermal buckling analysis was performed on a midspan wing segment. The unit panel region is identified as the potential thermal buckling initiation zone. Therefore, thermal buckling analysis of the Hyper-X wing panels could be reduced to the thermal buckling analysis of that unit panel. "Buckling temperature magnification factors" were established. Structural temperature-time histories are presented. The results show that the concerns of shear failure at wing and spar welded sites, and of thermal buckling of Hyper-X wing panels, may not arise under Mach 7 conditions.