【摘要】 本文对无粘跨音速流中作俯仰振动的细长旋成体,给出了一种计算表面非定常压力分布和动稳定性导数的近似方法,即用时间线化近似,在引入局部线化假设后,将跨音速小扰动方程化为一个积分方程,并用精确物面边界条件求数值解。本方法算例与其它理论和实验结果作了比较,表明用它可以得出较合理的结果。更多还原

【Abstract】 An approximate method is developed to calculate the unsteady surface pressure distributions and stability derivatives for elongated axisymmetric bodies of revolution undergoing harmonic pitching oscillations in transonic flow.The analysis is based on the time-linearized transonic small disturbance equation and the concept of local linearization.An integral equation is obtained and solved numerically with panel method.Some results of the present method are compared with those of other theoretical methods and experiments,which indicate that available results can be obtained by the present method.更多还原