超音速、高超音速飞行器动导数的高效计算方法

将超音速、高超音速气动力工程计算方法综合起来,推广到非定常气动力的计算,并用于求解任意外形飞行器作强迫运动时的非定常气动力.在此基础上进一步发展了一种适合于超音速、高超音速大迎角状态的飞行器动导数计算方法和程序.计算结果与国际标准实验数据作了比较,证明了该程序的正确性和精度.研究了减缩频率和基本迎角对动导数的影响,结果表明基本迎角对动稳定性导数影响较大,而减缩频率在小迎角范围内对动导数影响很小.

A High Efficient Method for Computing Dynamic Derivatives of Supersonic/Hypersonic Aircraft

Existing engineering methods for supersonic/hypersonic flow are combined and extended to compute the unsteady aerodynamic loads for arbitrarily shaped aircrafts.A high efficient computational method for supersonic/hypersonic dynamic derivatives is developed.The computed results are compared with the experimental data to validate the correctness and accuracy.The effect of reduced frequency and angle of attack on dynamic derivatives is studied.It shows that angle of attack greatly affects dynamic derivatives,...