A Simulating Experimental Device of Rocket Ram Combined Inlet

Abstract

The invention provides a simulated experimental device for a rocket ramming combination air inlet, which includes an air intake unit, an experimental observation unit, and a simulated backpressure device; The entrance enters, flows out after passing through the experimental observation unit, and flows out through the simulated back pressure device located at the tail of the experimental observation unit. The experimental observation unit includes an isolation section and a combustion chamber. There is a built-in rocket at the connection position between the isolation section and the combustion chamber, and the built-in rocket has a gas source. The interface is connected to the high-pressure gas source through the flange, and the built-in rocket in operation is simulated by adjusting the pressure of the high-pressure gas. The tail cone is controlled to move back and forth on the tail cone frame through the slide rail, and high pressure is generated by blocking the flow channel area at the outlet, thereby simulating the pressure generated by combustion in the combustion chamber under real working conditions.

Description

technical field [0001] The invention relates to the field of air-breathing combined propulsion systems, in particular to a simulated experimental device for rocket ramming combined inlets. Background technique [0002] The Rocket-Based Combined Cycle (RBCC) engine organically integrates a rocket engine with a high thrust-to-weight ratio and an air-breathing ramjet engine with a high specific impulse in the same flow channel, and is compatible with ejection, subcombustion, and scramjet And pure rocket mode, to achieve high-performance work in wide speed range and large airspace. [0003] For any air-breathing engine, the smooth start of the intake port is the prerequisite for its high specific impulse to work, and it is also the basis for its normal work. Different from conventional inlets, the working state performance of rocket ram-combined inlets is not only related to the incoming flow conditions, but also affected by the built-in rocket and the back pressure of the comb...

AI Technical Summary

Problems solved by technology

In order to study the starting characteristics and working performance of the rocket ram combination inlet in the real working environment under the joint influence of the built-in rocket and the back pressure of the combustion chamber, it is necessary to verify the researched rules and control schemes by means of experiments, but the current The applied experimental device cannot effectively determine the performance of the inlet under the combined influence of the built-in rocket and the back pressure of the combustion chamber

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