火箭推进2017，Vol.43Issue(1)：18-23,6.
RBCC发动机火箭推力增益之探讨
Discussion of rocket thrust augmentation for RBCC engine
摘要
Abstract
In order to enhance rocket thrust augmentation of rocket-based combined-cycle (RBCC) engines in rocket ramjet mode,the flow interaction characteristics between rocket ejection and ramjet inflow are analyzed,as well as constitution of thrust augmentation is discussed on the basis of the numerical simulation result in the Maeh 4 coming flow condition of the simulated flight.Some measures for improving rocket thrust augmentation are given as follows:1) the selection of ramjet passageway and rocket ejection parameters must guarantee the flow matching between two supersonic velocity shear flows to achieve the weight transportation and momentum between high energy rocket jet flow and low energy ramjet mainstream rapidly and efficiently in the finite space of ramjet combustor,and improve the exhaust velocity and pressure of engine nozzle in maximum limit;2) the rocket with high chamber pressure should be adopted to enhance expending degree of rocket exhausted gas and reduce the thrust augmentation loss of rocket.关键词
RBCC/火箭冲压模态/推力增益Key words
RBCC/rocket ramjet mode/thrust augmentation分类
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刘昊,王君..RBCC发动机火箭推力增益之探讨[J].火箭推进,2017,43(1):18-23,6.基金项目
国家863项目(2012AA7053021) （2012AA7053021）
