High-position automatic water spraying noise reduction system following rocket exhaust plume

Abstract

The invention discloses a high-position automatic water spraying noise reduction system following rocket exhaust flame, and belongs to the technical field of rocket launching noise protection. The system comprises nozzles, a quick valve control system, an air supply system, a water supply system and a drainage system; the nozzles are connected to the water supply system through water spraying pipelines, and evenly arranged on the front side and the rear side of a launching station; and the water spraying range can cover a launching pad after stable water spraying of the nozzles. The rapid valve control system is arranged on a water supply pipeline, and short-range water spraying of the system is achieved before ignition of a rocket engine; long-range water spraying of the system is achieved at a certain moment after a rocket is ignited to take off, and the time interval between the working conditions of short-range water spraying and long-range water spraying is about 1 s; the air supply system is used for providing compressed air for the quick valve control system as a control air source; and large-flow sprayed water is timely collected and discharged to a low-lying position outside a launching site through the drainage system. According to the system, the working conditions of water spraying are switched according to the rocket launching conditions, the safety of a rocket body can be guaranteed, and meanwhile noise radiation and propagation are restrained.

Description

technical field [0001] The invention relates to a high-position automatic water spray noise reduction system following a rocket tail flame, belonging to the technical field of rocket launch noise protection. Background technique [0002] When the medium and large bundled carrier rockets are launched, the jets of the first stage and the booster engine will produce aerodynamic noise of more than 170dB, which will cause acoustic vibrations on the rocket and the weak structural parts of the launch system, and sound-sensitive electrical components, causing destructive effects and affecting the launch. The environment around the field and the test personnel will also cause harm. When the rocket is ignited, water is sprayed into the engine gas jet field to change the noise generation mechanism and suppress the noise propagation, which can effectively reduce the noise value around the rocket. At present, the high-level water spray lags behind the rocket’s take-off time. In the init...

AI Technical Summary

Problems solved by technology

At present, the high-level water spray lags behind the rocket’s take-off time. In the initial stage of the rocket’s take-off, the water spray and noise reduction system failed to start due to concerns that the mis-spray would affect the rocket body. The noise reduction water could not reach the engine jet area in time, and the water spray and noise reduction system was activated At this time, the rocket body has been flying far away from the ground, which affects the noise reduction effect of the high-level water spray

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