High-temperature high-speed jet deflection device

Abstract

The invention provides a high-temperature high-speed jet deflection device. The high-temperature high-speed jet deflection device is characterized by comprising a main flow tube 1, branch flow tubes 2, and a guide vane array 3; the main flow tube 1, the branch flow tubes 2 and the guide vane array 3 are all made of powder alloy and are internally provided with flow paths that communicate; the mainflow tube 1 is used for supporting the branch flow tubes 2 and the guide vane array 3; and the main flow tube 1 is connected to a cooling water pipeline and transports the sweat cooling water to thebranch flow tubes 2 and the guide vane array 3. The device can be used for the thermal protection of a ground test bench structure in the engine swing test, and can also be used for the thermal protection of an exhaust system in the engine swing test on a high altitude simulation test bed.

Description

technical field [0001] The invention relates to a sweat-cooled cascade-type airflow deflection device, which can change the flow direction of high-temperature and high-speed jets, and is mainly used for thermal protection of rocket engine ground test benches and high-altitude simulation test benches. Background technique [0002] During the development and test of a large liquid rocket engine, the swing test is an important test content to investigate the performance of the engine. Regardless of whether the engine adopts the pump-swing scheme or the pump-swing scheme, the supersonic high-temperature (up to 3800K) jet discharged from the engine nozzle will swing within a certain angle (usually 0-10°) during the test, which will cause In some non-swing tests, structural load-bearing parts with very low mechanical and thermal loads are directly scoured by high-temperature and high-speed jets, which may cause ablation damage or even endanger the structure of the test bench. Espe...

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Problems solved by technology

[0005] The technology of the present invention solves the problem: at present, the method of increasing the water spray area, the number of water pumps, and the volume of the pool is adopted when the existing ground test bench tests the engine that swings at a large angle, which causes a huge civil engineering and equipment investment burden, while the high-altitude simulation test bench The upper swing test cannot be carried out

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