Solid rocket super combustion ramjet engine, arc-shaped fuel gas generator and center injection device

Abstract

The invention discloses a solid rocket super combustion ramjet engine, an arc-shaped fuel gas generator and a center injection device. The engine comprises a front body, a gas input channel, a fuel supplementing chamber, a tail injection pipe, at least one fuel gas generator and at least one flow guide pipe. The fuel gas generator is of an arc shape, is provided with a containing cavity capable ofcontaining solid propellant, and is fixedly assembled on the fuel supplementing chamber or the gas input channel or the tail injection pipe as a whole or in a subsection manner in the direction parallel to the axial direction of the fuel supplementing chamber, or arranged in the front body. An injection device of the flow guide pipe is located between the fuel supplementing chamber and the gas input channel. A flow guide cone is arranged at the end, close to the gas input channel, of the injection device, and a mixing reinforcement structure is arranged at the end, close to the fuel supplementing chamber, of the injection device. Compared with an existing solid rocket sub combustion ramjet engine and super combustion ramjet engine, the engine is reasonable in space application, the filling ratio is increased, the size of the engine is reduced, the long-range flying function of the engine can be achieved, and meanwhile, the heat protection pressure of the engine is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of solid rocket scramjet, in particular to a solid rocket scramjet, an arc-shaped gas generator, and a central injection device. Background technique [0002] The solid rocket scramjet is the power plant of the hypersonic vehicle, and the structural design of the grain is one of the key technologies of the solid rocket scramjet. In the decades of engineering applications of solid rocket motors, a large number of related design technologies have been accumulated. [0003] The charging method of the existing solid rocket sub-combustion ramjet mostly assembles the solid propellant at the front side of the gas generator. The solid propellant burns along the axial direction and injects rich fuel gas. Incoming air mixed combustion. Since the working Mach number of the solid rocket sub-combustion ramjet engine is not high, generally not more than 4, the incoming air will become subsonic after being compressed by ...

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Problems solved by technology

[0005] The invention provides a solid rocket scramjet engine, an arc-shaped gas generator, and a central injection device, which are used to overcome defects such as unreasonable utilization of engine space, low filling ratio, and difficulty in thermal protection in the prior art, and realize the integration of the engine space. Reasonable use, increase the filling ratio, reduce the size of the solid rocket scramjet, realize its long-distance flight function, and improve the mixing and combustion efficiency of the engine, and reduce the difficulty of thermal protection of the engine wall

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