摘要
雀降是翼伞的一种重要性能,在本质上是一种小心操纵的动力失速,使回收系统以最小的速度着陆,降低着陆冲击,实现定点着陆。文章简要介绍了翼伞雀降技术的概念、雀降的典型过程和影响雀降性能的主要因素。目前有限元模拟技术已经用于大型冲压翼伞的雀降技术研究中。随着回收载荷和空投物质量的增加,原来用于翼伞雀降的伺服机构已不再适用,各国正在寻找新的动力源或方法来实现自动雀降。
Flare maneuver is one of important functions of ram-air parachute, and an course of motive force stall operated carefully on essential. It makes the recovery system land at the predetermined point at very low speed, and it can reduce the landing shock. This paper simply introduced the technical concept of flare maneuver and brings out major factors that affect the functions of flare maneuver. At present, parallel finite element has been successfully used to simulate the flare maneuver of large ram-air parachute.There is a requirement to develop large gliding parechute that could deliver payloads up to several tons. The electric ser-voactuators used to provide power for flare maneuver before is unfit .NASA Dryden Flight Center and American Pioneer Corp. are devoting to find new power providers or new methods to realize automatic flare maneuver.
出处
《航天返回与遥感》
1999年第2期5-9,共5页
Spacecraft Recovery & Remote Sensing
