Reverse air jetting air bubble assisting high-speed water inlet reducing impact load mechanism

A technology of impact load and cavitation, which is applied in the field of high-speed entry of moving objects into water, can solve the problem of large area of ​​​​the navigating body, and achieve the effect of being conducive to stability.

Inactive Publication Date: 2019-02-15
HARBIN ENG UNIV
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Problems solved by technology

This situation is similar to the formation process of air bubbles in water, but due to the mass of the vehicle bo

Method used

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  • Reverse air jetting air bubble assisting high-speed water inlet reducing impact load mechanism
  • Reverse air jetting air bubble assisting high-speed water inlet reducing impact load mechanism

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] as attached figure 1 Shown, is the schematic diagram of mechanism of the present invention; Comprising high-pressure gas bottle 1, gas circuit 2, fairing 3, engine 4, nozzle 5, empennage 6, air hole 7, high-speed gas jet hole 8, moving body 9, air cavity 10, electronic pressure regulating valve 11, electronic flow meter 12, computer control device 13, threaded connection device 14; Fairing cover 3 is connected on moving body 9 head by thread 14, and some air holes 7 are evenly distributed in the circumferential direction of moving body head, and air hole and The annular air cavity 10 inside the shell is connected, and the engine supplies air to the air cavity through the air circuit 2. The electronic pressure regulating valve 11 and the electronic flow meter 112 are arranged on the air circuit, and the air cavity is connected to the high-speed gas jet hole 8 on ...

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Abstract

The invention belongs to the technical field of high-speed water inlet of moving objects, in particular to a reverse air jetting air bubble assisting high-speed water inlet reducing impact load mechanism. The load mechanism comprises a high-pressure gas cylinder, a gas channel, a fairing, an engine, a spray pipe, a tail wing, air holes, a high-speed gas jet hole, a moving body, an air cavity, an electronic pressure regulating valve, an electronic flowmeter, a computer control device and a threaded connection device; the fairing is connected to the head of the moving body through threads, a plurality of air holes are uniformly distributed in the head of the moving body in the circumferential direction, the air holes are in communication with the annular air cavity in the shell, the engine is used for supplying air to the air cavity through the air channel, the air cavity is connected with the high-speed gas jet hole, the high-pressure gas cylinder is connected with the high-speed gas jet hole through an air channel arranged with the electronic pressure regulating valve and the electronic flowmeter, and the spray pipe is located at the tail part of the device. The high-energy gas jetis used for tearing a notch in front of the moving body to make contact with the water, the moving body does not need to be decelerated, most of the load resistance of the front surface is avoided, and the problem of contradiction between speed and water inlet resistance is solved.

Description

technical field [0001] The invention belongs to the technical field of high-speed water entry of moving objects, and in particular relates to a mechanism for assisting high-speed water entry to reduce impact load by reverse jet ventilation cavitation. Background technique [0002] When the moving body enters the water at high speed, excessive impact loads are generated due to sudden changes in the density of the medium. Excessively high impact loads will cause the equipment in the moving body to fail, and even cause the structure of the moving body to be damaged. In order to avoid this situation, the high-energy jet is used to squeeze the water surface, and a gas cavity is formed to wrap the surface of the vehicle during the water entry process, thereby reducing resistance and playing the role of buffering and guiding the water entry. The cavitation technology in underwater drag reduction has been the focus of attention of various countries since the last century. Foam drag...

Claims

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Application Information

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IPC IPC(8): F42B19/00F42B19/12
CPCF42B19/00F42B19/125
Inventor 蒋运华要尧王海波邹志辉张德欣
Owner HARBIN ENG UNIV
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