Actively cooled dual-nozzle strut-plate ejection rocket for rocket-based combined-cycle engine

Abstract

The invention discloses an active cooling double-spray pipe support plate ejection rocket for a rocket based combined cyclic engine. The active cooling double-spray pipe support plate ejection rocketfor the rocket based combined cyclic engine comprises a support plate ejection rocket body. The support plate ejection rocket body is a sold cuboid and used for longitudinal arrangement in a segregation segment of the engine. A vertical direction combustion chamber is formed in the side, close to a short edge, in the support plate ejection rocket body. Two longitudinal Rafael spray pipes are arranged on the side, close to the other short edge, of the combustion chamber in an up-down spaced manner and communicate with the combustion chamber. In the support plate ejection rocket body, communicating M type cooling channels are formed along one long edge of the support plate ejection rocket body and then surrounding the outer walls of one sides of the Rafael spray pipes and the outer wall of the combustion chamber by one circle in sequence, and then surrounding the outer walls of the other sides of the Rafael spray pipes and the other long edge of the support plate ejection rocket body insuccession. An outer side cooling channel and an inner side cooling channel are formed in the support plate ejection rocket body. Cooling requirements of the inner side wall surface and the outer sidewall surface of the support plate rocket can be met simultaneously, and long-time working of the support plate ejection rocket is achieved.

Description

technical field [0001] The invention belongs to the technical field of rocket-based combined-cycle engines, and in particular relates to an active-cooling double-nozzle support-plate ejection rocket of a rocket-based combined-cycle engine. Background technique [0002] The rocket-based combined cycle (Rocket-Based-Combined-Cycle, RBCC) propulsion system combines the rocket engine and the ramjet engine in the same flow channel, so that it can enable the best working mode under different flight altitudes and Mach number conditions. , giving full play to the respective characteristics of the rocket engine and the ramjet engine, so that the RBCC engine has the advantages of zero-speed start and reusability while having high specific impulse and high thrust-to-weight ratio. In the rocket-based combined cycle propulsion system, the ejection rocket plays a very important role: in the ejection mode, it plays the role of ejecting air, fuel injection, generating thrust and ignition; i...

AI Technical Summary

Problems solved by technology

The reduction in the size of the rocket will also make the environment of the ejection rocket engine more severe, and its inner wall faces a harsh thermal environment. At the same time, due to the severe aerodynamic heating on the outer wall of the engine isolation section, the miniaturization and double-sided The heated environment poses a serious technical challenge for the thermal protection of ejected rockets

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