火箭推进2023，Vol.49Issue(6)：100-109,10.
PATR发动机发展历程简介及参数特性分析
Development history and parameter characteristic analysis of PATR engine
马海波 1马元 1南向谊 1张蒙正 1刘典多1
作者信息
- 1. 西安航天动力研究所,陕西西安 710100
- 折叠
摘要
Abstract
The development history of PATR engine is briefly introduced and its innovation and optimiza-tion ideas are summarized.For the thermal cycle scheme of PATR engine,the influence of input parame-ters at the design point is analyzed,and the simulation calculation of trajectory characteristics,altitude characteristics and rotation speed characteristics are carried out.The results show that the heat capacity ratio has the most significant effect on the engine performance.With the heat capacity ratio increasing by 1％,the specific impulse decreases by 0.59％and the unit thrust increases by 0.39％.The isentropic efficiency of the air compressor and helium turbine,and the total pressure recovery coefficient at the air side of the precooler also have significant effects on the engine performance.The specific impulse increa-ses by 0.12％and the unit thrust increases by 0.12％when the isentropic efficiency of the air compressor increases by 1％.In addition,the other parameters have relatively small effects on the engine perform-ance.With the increase of flight Mach number,the specific impulse of PATR engine shows a downward trend,and the specific thrust decreases suddenly when the external duct starts working,and then remains basically unchanged.The increase of flight altitude will result in an increase for the specific impulse of the engine increases and a decrease in the specific thrust.When the engine speed decreases,both the specific impulse and specific thrust of the engine decrease,and the reduction when the internal duct and external duct work together is obviously smaller than that when the internal duct works alone.关键词
PATR发动机/仿真计算/参数影响/工作特性/热容比Key words
PATR engine/simulation calculation/parameter influence/operating characteristics/heat capacity ratio分类
航空航天引用本文复制引用
马海波,马元,南向谊,张蒙正,刘典多..PATR发动机发展历程简介及参数特性分析[J].火箭推进,2023,49(6):100-109,10.
