• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE Aerospace Conference >Summary of the second high-altitude, supersonic flight dynamics test for the LDSD project
【24h】

Summary of the second high-altitude, supersonic flight dynamics test for the LDSD project

机译：LDSD项目第二次高空，超音速飞行动力学测试的摘要

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

NASA's Low-Density Supersonic Decelerator Project is developing and testing the next generation of supersonic aerodynamic decelerators for planetary entry. A key element of that development is the testing of full-scale articles in conditions relevant to their intended use, primarily in the tenuous Mars atmosphere. To achieve this testing, the LDSD project developed a new test architecture for the qualification of their supersonic parachute. A large, helium filled scientific balloon is used to hoist a 4.7 m blunt body test vehicle to an altitude of approximately 32 kilometers. The test vehicle is released from the balloon, spun up for gyroscopic stability, and accelerated to over four times the speed of sound and an altitude of 50 kilometers using a large solid rocket motor. Once at those conditions, the vehicle is despun and the test period begins. The second flight of this architecture occurred on June 8th, 2015. This flight sought to build on the very successful shakeout test of 2014 by testing an updated design of a new 30.5 meter nominal diameter supersonic parachute that applied lessons learned from the first flight. Two other supersonic decelerators were also tested: a 6 m diameter Supersonic Inflatable Aerodynamic Decelerator (SIAD), and a 4.4 m diameter trailing ballute. This paper summarizes the results from that test.
机译：NASA的低密度超音速减速器项目正在开发和测试用于行星进入的下一代超音速空气动力学减速器。这一发展的关键要素是在与预期用途相关的条件下（主要是在火星微弱的环境中）对全尺寸物品进行测试。为了实现这一测试，LDSD项目开发了一种新的测试架构，以对其超音速降落伞进行鉴定。使用一个装有氦气的大科学气球将4.7 m钝体测试车提升到大约32公里的高度。将测试车辆从气球中释放出来，旋转起来以提高陀螺仪的稳定性，并使用大型固体火箭发动机将其加速到声速的四倍和高度50公里。一旦处于这些条件下，车辆便被启动并开始测试阶段。该架构的第二次飞行于2015年6月8日进行。该飞行试图通过测试新的公称直径30.5米超音速降落伞的更新设计来借鉴2014年非常成功的震动试验，该降落伞应用了从第一次飞行中汲取的经验教训。还测试了另外两个超音速减速器：直径为6 m的超音速充气气动减速器（SIAD）和直径为4.4 m的尾随式减速器。本文总结了该测试的结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号