Full-rotation detonation mode rocket-ramjet combined engine and operation method

Abstract

The invention discloses a full-rotation detonation mode rocket-ramjet combined engine and an operation method. The full-rotation detonation mode rocket-ramjet combined engine comprises a shell, a center body, an oxidizing agent storage tank and a fuel storage tank. The shell comprises an arc-shaped amplification section, a short cylinder section, a long cylinder section and an arc-shaped contraction section; the center body comprises an air inlet cone, an injection panel and a rocket engine; the rocket engine comprises a common shell, a central cylindrical section and a central tail cone; a stamping rotating detonation combustion chamber is formed between the outer wall face of the public shell and the long cylinder section. And a rotary detonation rocket combustion chamber is formed between the inner wall surface of the common shell and the central cylindrical section. The device has a rotary detonation rocket mode and a rotary detonation stamping mode; the method comprises the following steps: firstly, working in a rotary detonation rocket mode to realize zero-speed starting boosting or horizontal launching; and when the flight speed reaches Ma2.5, a rotating detonation stamping mode is switched to, and oxygen in the air is utilized. Meanwhile, the fuel cavity can cool the public shell and preheat the fuel, and detonation combustion is achieved in a hot fuel mode.

Description

technical field [0001] The invention relates to an engine, in particular to a fully rotating detonation mode rocket-ramjet combined engine and an operating method. Background technique [0002] The rotary detonation ramjet is a new type of propulsion system that uses detonation combustion as the combustion organization method. Compared with the traditional power based on isobaric combustion, it has higher theoretical cycle efficiency and a more compact structure. The rotary detonation combustion chamber replaces the traditional The ramjet combustion chamber uses the ramjet's intake port to obtain oxidant from the external environment. Because the rotary detonation ramjet combines the advantages of the rotary detonation combustion and the ramjet, it has the advantages of high specific impulse, simple structure, short combustion chamber, large thrust-to-weight ratio, self-pressurization, and high thermal cycle efficiency, which has attracted widespread attention. [0003] Com...

AI Technical Summary

Problems solved by technology

[0004] The single rotary detonation ramjet engine has the problem of being unable to self-start, and its angle and altitude are difficult to maneuver quickly under high Mach number flight conditions

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