EFFICIENT PREDICTIONS OF HYPERSONIC AND SUPERSONIC FLUTTER
Existing engineering methods for computing aeroelastic characteristics of super-sonic wing, in our opinion, can only deal with thin supersonic wing with sharp leading edge. We combine existing engineering methods (Newtonian theory, pis-ton theory, tangent-wedge/tangent-cone method, shock-wave and expansion-wave method) in such a way as to make it possible to compute unsteady aerodynamic pressure distribution for both thin and thick wings and for both sharp and blunt leading edges. Then we extend the combined method to compute unsteady loads and aeroelastic characteristics in supersonic or hypersonic flow. The governing structural equations of the system are solved in time domain. Calculated errors of flutter speeds are within 10％ of experimentally determined ones. For hypersonic wing, some non-linear phenomena have been found at high Mach numbers and high angles of attack.
ZHANG WEIWEI YE ZHENGYIN FAN ZEWEN YANG BINYUAN
National Key laboratory of Aerodynamic Design and Research,Northwestern Polytechnical University, Xi Shanghai Aerospace Center, Shanghai, 200233, China
国际会议
The Joint Conference of ICCP6 and CCP2003(第6届国际计算伦理会议)
北京
英文
288-292
2004-05-23（万方平台首次上网日期，不代表论文的发表时间）