A solid rocket scramjet using a multi-stage combustion enhancement device

Abstract

The invention discloses a solid rocket scramjet engine adopting a multi-stage combustion enhancing device. The engine comprises an isolation section, a combustion chamber, a plurality of flow disturbing devices, concave cavities and a group of wedge units; the isolation section is a cavity body with a gas inlet end and a gas outlet end; the combustion chamber is a cavity body with a gas inlet endand a gas outlet end, and the gas inlet end of the combustion chamber is integrally connected with the gas outlet end of the isolation section; the flow disturbing devices are combinations of the concave cavities and one group of wedge units; the concave cavities are formed in the upper wall and the lower wall of the combustion chamber in an axially spaced mode, and the concave cavities in the upper wall and the concave cavities in the lower wall surface are arranged in a staggered manner; and one group of wedge units are arranged between two adjacent concave cavities in the same wall surfaceand correspond to the concave cavities in the opposite side wall in position. According to the solid rocket scramjet engine, the mixing degree between fuel-rich gas generated by a solid rocket and thesupersonic-velocity air flow is enhanced, the range of a combustible area is expanded, the combustion efficiency of the rocket fuel-rich gas is improved, so that the overall performance of the engineis improved.

Description

technical field [0001] The invention belongs to the technical field of solid rocket scramjet, and in particular relates to a solid rocket scramjet using a multi-stage combustion enhancement device. Background technique [0002] The solid rocket scramjet uses solid grains to generate high-temperature fuel-rich gas and supersonic air flow for mixing and combustion, and generates thrust through the expansion of the tail nozzle. Compared with the liquid scramjet, it has the advantages of simple structure, easy storage, low cost, strong maneuverability and fast combat response, and the flow rate of solid rockets is easy to adjust, there is no ignition and flame stability problems, and the working process of the combustion chamber is affected by the incoming flow. The influence of parameters is small and the working time is long, so the solid rocket scramjet has a good application prospect in aerospace vehicles. [0003] At present, the research on solid rocket scramjet at home a...

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Problems solved by technology

[0003] At present, the research on solid rocket scramjet at home and abroad is still in its infancy, and it cannot solve the problem of efficient combustion of solid particles in the combustion chamber.

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