Small-sized rocket engine test bed spray device

Abstract

The invention discloses a spray device designed aiming at a small-sized engine test bed. The spray device comprises a water supplying system and an engine tail flame guiding system; two ends of a manual cut-off valve with water supply are respectively connected with a tap water pipe and a boosting pump in a laboratory; two ends of an electromagnetic valve are respectively connected with the boosting pump and a water slot inlet; a water slot is provided with two outlets; one outlet is connected with a spray ring while the other outlet is connected with the manual cut-off valve; the water slot is positioned at the periphery of a convergence section and an extension section of a small-sized rocket engine; the spray ring is a round ring structure, is embedded into the extension section and is provided with spray holes; water in the water slot is sprayed into the extension section by the spray holes; the engine tail flame guiding system comprises a convergence section and an extension section; the convergence section is embedded in a wall, is positioned behind the small-sized rocket engine and is used for guiding burning products; the convergence section is connected with the extension section connected with a support. The small-sized high-speed large dynamic digital receiver system is suitable for being used in a closed space and for performing guiding, cooling and denoising processing on tail flame after a small-sized rocket engine test.

Description

technical field [0001] The invention relates to a spraying device for a small-scale rocket engine test bench, which belongs to the supporting facilities of the aerospace engine test bench. The spraying device is especially used when the thrust of the rocket engine is below 20000N and the long-time pulse works. Background technique [0002] Engine test is an important method to verify the technical indicators and performance of the engine. Generally, during the aerospace engine test process, the large-scale test application site is a relatively wide site. The high-temperature and high-speed flow generated by the engine test, accompanied by strong noise, will gradually fade in the air. Attenuation, because there are few people around, so the impact on the surrounding is small, such large engine tests are often used in engineering development. However, from the perspective of low-cost scientific research, small-scale engine testing is the main solution used by university resear...

AI Technical Summary

Problems solved by technology

In colleges and universities, the test site is generally a certain confined space, which will have a greater impact. The impact and noise generated by the airflow will seriously affect the safety of indoor and surrounding facilities and operators.

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