临近空间乘波体飞行器弹跳瞬间特性研究  

Study on Bouncing-moment Characteristics of Near Space Waverider Vehicles

作　　者：李海林[1] 吴德伟[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《导弹与航天运载技术》2012年第3期6-10,共5页Missiles and Space Vehicles

摘　　要：以临近空间乘波体飞行器弹跳瞬间的特性为研究对象,论证临近空间乘波体飞行器飞行轨迹属于非开普勒轨道的研究范畴;推导基于非开普勒轨道的该飞行器巡航段和再入段的动力学方程,研究弹跳瞬间临近空间乘波体飞行器的位置矢量求解问题;进而论述弹跳瞬间特性,提出弹跳系数的概念,最后进行仿真分析,结果表明临近空间乘波体飞行器弹跳瞬间有明显的拐点特性并且加速度必须满足一定的条件才能弹跳,所得结论对临近空间乘波体飞行器弹跳飞行的研究具有一定的参考价值。Bouncing-moment characteristics of near space waverider vehicles is studied in the paper, arguing that the trajectory of near space waverider vehicles is within the research scope of non-keplerian orbits; the dynamics equations for cruising and reentry phases based on non-keplerian orbits is derived, and the question of bouncing-moment position vector of near space waverider vehicles is researched; then the bouncing-moment characteristics and the concept of bouncing modulus is presented; lastly a simulation analysis is conducted, and its results show that the bouncing-moment characteristics of near space waverider vehicles have distinct inflexion, and the value of acceleration has to satisfy a certain condition to make vehicles bouncing, which is of a certain reference value for the study of bouncing flight of near space waverider vehicles.

关 键 词：非开普勒轨道 临近空间乘波体飞行器 巡航段 再入段 弹跳系数 

分 类 号：V412.44[航空宇航科学与技术—航空宇航推进理论与工程]