Launching system with water spray suppression peripheral, high jet noise function

Abstract

A launching system capable of suppressing periphery and high position jet noise by spraying water comprises a primary peripheral water spraying noise reduction system and a secondary high position water spraying noise reduction system, wherein the primary peripheral water spraying noise reduction system can spray water from the circumferential sidewall of a launching platform body to the peripheryto suppress high sound intensity jet noise which flows down and spills back through a flow guide groove of the launching platform body; the secondary high position water spraying noise reduction system is arranged on the periphery of the launching platform body, is in a high position water spraying mode and can spray water from the outer side to an outlet of the flow guide groove, a secondary periphery water spraying water curtain is formed so as to restrain high sound intensity jet noise reflected from the outlet of the flow guide groove; and meanwhile, the secondary high position water spraying noise reduction system can spray water to the center area of the launching platform body, and a secondary interior water spraying water curtain is formed. The launching system can effectively reduce the rocket launching jet noise intensity and suppress the high sound intensity jet noise reflected upwards from the open space between the lower portion of the launching platform body and an inletof the flow guide groove and the peripheral noise generated by gas flow ejected from the outlet of the flow guide groove.

Description

technical field

[0001] The invention relates to a launching system with the function of water spraying to suppress peripheral and high-level jet flow noise, and belongs to the technical field of space launch heat protection. Background technique

[0002] The water spray technology used in the rocket launch process can effectively control the jet flow noise, and at the same time effectively protect the launch platform and diversion facilities.

[0003] At present, mainly relying on the launch platform structure, trusses are used to build a water spray cooling and noise reduction system on the periphery of the launch platform. The noise effect cannot radiate to the peripheral space of the platform body. During the launching process of a large rocket, even if the above-mentioned structure is used for noise reduction, the flow velocity and sound pressure of the gas flow flowing through the diversion hole of the launch platform and flowing in the diversion groove are still high,...

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