c#采用sharpgl显示地球、飞行器以及粒子流，通过键盘WSADQE控制视景的观展角度，通过1234控制四个喷管粒子的喷射。-c# using sharpgl show the Earth, spacecraft and particle flow, controlled by the keyboard WSADQE visual angle of view of development, by 1234 the four control injection nozzle particles.

超高声速尾喷管的设计，手缩段是圆弧加直线前段设计。-Design of the super loud speed tail nozzle, the design of the circular arc and straight line.