核热推进反应堆关键技术及其发展

摘要

分析了核热推进NTP（nuclear thermal propulsion）反应堆关键技术及现状，介绍了核热推进反应堆技术在空间推进领域的应用，总结对比了美国、俄罗斯现有核热推进反应堆设计方案的主要参数和特性，并对未来航天器用核热推进反应堆的发展方向和应用前景进行了探讨。%In this paper , the key technologies and their development in nuclear thermal pro-pulsion( NTP) reactors are analyzed , and the application background of NTP reactors in space is also introduced . Meanw hile , the main parameters and characteristics of some N T P reactors designed in USA and Russia are compared . Finally , the development and application foreground of NTP reactors in the future are discussed .