Rocket-based detonation and ramjet combined cycle engine and using method and application thereof

Abstract

The invention belongs to the technical field of aerospace engines, and particularly relates to a rocket-based detonation and ramjet combined cycle engine and a using method and application thereof. The combined cycle engine comprises a center cone (1), a shell (2) and an exhaust nozzle (3) which are connected in sequence, the bottom of the center cone (1) extends into the shell (2) to be connectedwith a fixed partition plate (5), and an adjustable air inlet channel (4) is formed by the cone part of the center cone (1) and the inner wall of the shell (2). A rocket engine (8) and an annular detonation and ramjet combustion chamber (7) annularly surrounding the rocket engine (8) are arranged in the shell (2). The advantages of the rocket engine, a ramjet and rotary detonation combustion propulsion can be brought into full play, and the multi-mode combined propulsion requirements of efficient air-suction flight of a non-aerospace vehicle in the atmosphere and cross-atmosphere rocket orbitinjection flight can be met.

Description

Technical field[0001]The invention belongs to the technical field of aerospace engines, and more specifically, relates to a rocket-based detonation ramming combined cycle engine and its use method and application.Background technique[0002]Over the past half century, with the increase in human space exploration activities, new concepts of aerospace vehicles such as aerospace planes and space-to-earth transportation vehicles have continued to introduce new concepts, which have also put forward an urgent need for the development of new aerospace flight power technologies. Compared with traditional launch vehicles, horizontal take-off and landing reusable aerospace vehicles have the advantages of freedom, flexibility, speed, convenience, and efficiency, including two-stage orbit and single-stage orbit, which has always been the goal that people continue to pursue, and it is also the current and future An important direction for the development of air-breathing aerodynamic technology.[00...

AI Technical Summary

Problems solved by technology

However, traditional RBCC engines still face some key problems to be solved in order to meet the needs of practical applications: 1) Ma0-2 low-speed rocket launch mode has a bottleneck, low thrust enhancement performance, insufficient acceleration thrust, and high overall fuel consumption (even exceeding 40 %); 2) The contradiction between the integration of the rocket and the ramjet flow channel is prominent, and the scale of the ejector rocket integrated in the ramjet flow channel is limited, resulting in insufficient acceleration thrust of the pure rocket during the transatmospheric entry into orbit; 3) For aerospace vehicles and other work requirements, the performance trade-off of wide-speed range engine is contradictory, and the comprehensive performance of full-speed range needs to be continuously improved

[0007] Therefore, the prior art still lacks a rocket-based combined-cycle engine capable of satisfying full-speed flight and having high-efficiency performance.

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