Active control device of supersonic blunt trailing edge mixed layer

Abstract

The invention provides an active control device of a supersonic blunt trailing edge mixed layer. By arranging a jet flow active control structure in the trailing edge of a partition plate, active control and passive control are combined, the problem that as for active control, vibrating plates are prone to melting is avoided, and various control modes can be freely selected. The active control device achieves the effects that active control and passive control are combined and complement each other.

Description

technical field [0001] The invention relates to the field of supersonic technology, in particular to an active control device for a supersonic obtuse trailing edge mixed layer. Background technique [0002] Ejection refers to the supersonic mixing of rocket gas and incoming air during rocket launch. This process is a key process of Rocket Based Combined Cycle (RBCC). For RBCC, the free incoming flow passes through a series of The intake port is in contact with the nozzle gas at the nozzle trailing edge. When the mixture of the two reaches the molecular level, a chemical reaction can occur, so as to achieve the purpose of increasing the specific impulse of the engine by using the oxygen in the air. However, due to the high flow velocity, the air can only stay in the combustion chamber for <1-3ms. The injection efficiency depends on whether the gas can be mixed with the air quickly and efficiently, and at the same time determines the performance of the entire propulsion sys...

AI Technical Summary

Problems solved by technology

In actual engineering practice, the high-temperature gas in the combustion chamber of the combined engine will easily melt the vibrating plate, resulting in control failure

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