论文部分内容阅读
目前高亚声速以及超声速模型飞行试验存在的困难主要是动力系统难以提供足够推力和短周期自由振荡频率急剧升高等。本文以一典型战斗机为例作了剖析,从剖析结果来看,在高速模型飞行试验中,模型缩尺比例K是最关键的参数。在中国空气动力研究与发展中心设计的翼身融合飞行器C2基础上,探讨了一种新的高速模型飞行试验方法:采用氦气球带飞,自22km高度投放实现超声速飞行,最大飞行速度达到马赫数1.18,这种采用重力克服发动机能力不足的思路是值得深入研究的,按照这种思路,完成了马赫数0.85的6g过载的高能量机动仿真。
At present, the difficulties existing in the flight tests of Gaoya sonic and supersonic models are mainly that it is difficult for the power system to provide sufficient thrust and the sharp rise of the free-running frequency of the short-period. In this paper, a typical fighter as an example for analysis, from the analysis results, high-speed model flight test, the model scale ratio K is the most critical parameter. Based on C2 wing-body hybrid vehicle designed by China Aerodynamics Research and Development Center, a new high-speed model flight test method is explored: flying with helium balloon, flying from 22km to achieve supersonic flight, the maximum flight speed reaches Mach number 1.18. This idea of using gravity to overcome engine capacity deficiencies deserves further study. According to this concept, a 6g overload high-energy maneuver simulation with a Mach number of 0.85 was completed.