Three-column fuel supply structure for hypersonic vehicle scramjet

Abstract

The present invention proposes a three-column fuel supply structure for a scramjet engine of a hypersonic aircraft. The three column structures of the structure are installed on the base and arranged in a straight line with a distance of 5 mm between them; the porous shell is made of metal particles It is made of sintered porous medium material, and the porous shell is wrapped on the top of the hollow support rod and sintered into a columnar structure as a whole; the fuel is distributed to the three column structures, and enters the cavity of the porous shell through the injection port at the bottom of the hollow support rod. The invention solves the problem that the fuel supply structure in the scramjet of the existing hypersonic aircraft cannot work for a long time, and uses a hollow columnar structure made of three metal particles sintered with porous materials to inject fuel at the same time. Utilizes fuel for full-coverage sweat cooling, while utilizing a tri-column design to balance cooling demand with flow distribution.

Description

technical field [0001] The invention relates to a three-column fuel supply structure for a scramjet engine of a hypersonic aircraft, which is used for supplying hydrocarbon fuel to a combustion chamber inside the scramjet engine of a hypersonic aircraft, and belongs to the technical field of scramjet engines. Background technique [0002] The thermal protection of scramjet is the focus and difficulty in the research of hypersonic vehicle propulsion technology in all countries in the world. It is generally believed that the ramjet engine of a supersonic vehicle works between flight Mach 2 and 5, while the scramjet engine of a hypersonic vehicle works at a flight Mach number above 5. The characteristics of the scramjet engine are: due to the high flight Mach number, the total temperature of the engine intake air is extremely high, even as high as 2000K, and the intake port cannot compress the incoming flow to subsonic speed to prevent the static temperature from being too high...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the fuel supply structure in the hypersonic aircraft scramjet cannot work for a long time, the present invention proposes a porous three-column fuel supply structure for the hypersonic aircraft scramjet, using three metal particles to sinter porous materials The hollow columnar structure is made to inject fuel at the same time, while the fuel is supplied, the fuel is used to fully cover the supply structure for sweat cooling, and the design of the three-column structure is used to balance the relationship between cooling demand and flow distribution

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