关键词: 空气涡轮火箭发动机;射流;预冷;数学模型

Abstract: In order to expand the operation range and improve the engine performance of air-turbo-rocket, based on the normal air-turbo-rocket with a water injection pre-cooler system and a modified thermodynamic model, a numerical model to calculate air-turbo-rocket performance was set up. On the given flight track and control law, the influence of limited compressor inlet temperature to the water amount,net thrust and specific impulse was analyzed. The results of simulation showed that the operation range was greatly expanded and net thrust was increased at high Mach number by adding a water injection pre-cooler system to the normal air-turbo-rocket engine.

Key words: Air-turbo-rocket (ATR); Jet flow; Precooling; Mathematical model