Turbine-based combined cycle engine super-combustion chamber

Abstract

The invention discloses turbine-based combined cycle engine super-combustion chamber. Key parts of the super-combustion chamber comprise a shunt ring, a rear area-variable deflation valve, a flow guide tongue piece, a square lobe mixer, a first area fuel ejector, a center cone, a second area fuel injection ring, an evaporation tube flame stabilizer, a heat-isolating screen, a super-combustion chamber cylinder, an outer extending groove-width-variable radial flame stabilizer and an inner extending radial flame stabilizer. An internal flow field of the super-combustion chamber is reasonably distributed, the phenomenon of backflow from a punching duct to a turbofan duct can not occur, flow separation can not occur in the square lobe mixer, and the evaporation tube flame stabilizer can achieve soft ignition of the super-combustion chamber. The whole super-combustion chamber is high in mixing efficiency, little in cold flow resistance, high in combustion efficiency, reasonable in temperature distribution, and capable of meeting use requirements in a whole flight envelope of the super-combustion chamber in each work state and the requirement for boost of an turbofan ramjet.

Description

technical field [0001] The invention belongs to the technical field of air-breathing engines, in particular to a turbine-based combined cycle engine. Background technique [0002] Turbine-based combined cycle engine (TBCC for short), as an air-breathing engine, has the advantages of wide flight range, conventional take-off and landing, and reusability, and is considered to be the most promising hypersonic vehicle power plant at this stage. Since the world's earliest TBCC prototype J58 was successfully applied to the SR-71 Blackbird reconnaissance aircraft, countries around the world have begun to invest a lot of manpower and financial resources in the research and development of combined hypersonic power devices, especially the RTA program of NASA in the United States and Japan. The HYPR program has achieved remarkable results. [0003] At present, domestic research and development of turbo-based combined cycle engines is still in its infancy, and there is a large technolog...

AI Technical Summary

Problems solved by technology

Some preliminary conceptual studies on its working mode, working principle, and mode conversion process have been made, but no in-depth analysis has been done on the design method of the turbine-based combined cycle engine, the working cooperation process between different working modes, and different design parameters. , the influence of adjustment rules on engine performance and other specific issues

In particular, there is no published literature on the design and implementation of the supercombustor as both the afterburner in the TBCC turbofan mode and the ramcombustor in the ram mode

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