Device for stable, high-speed and variable-angle water entry experiment of rotating body

Abstract

The invention belongs to the model facility of hydraulics experiment, and specifically relates to a device for stable, high-speed and variable-angle water entry experiment of rotating body, comprising a transparent water tank, a data acquisition system which the connection is controlled by the industrial personal computer as well as a release device of water entry objects arranged above the transparent water tank, the release device of water entry objects comprises an entry angle protractor and a gas guide rod under flexible connection with a horizontal bracing piece, the bottom sleeve connection of the gas guide rod is arranged with the rotary gear and rotating head motor under coordination with the rotary gear, the motor operation drivers the rotation of the water entry objects. The gas guide rod is under sealed connection with a gas supply device via the high-pressure windpipe, the gas supply device comprises a high-pressure gas cylinder with the electro-magnetic switch valve and a air compressor connecting to the high-pressure gas cylinder, negative or positive pressure is formed in the high-pressure gas cylinder by controlling the operation of the air compressor, so as to control absorption and high-speed release of the water entry objects. The device for stable, high-speed and variable-angle water entry experiment of rotating body can stably release different forms of water entry objects under high-speed rotation at high speed, and can accurately control the object entry angle.

Description

technical field [0001] The invention belongs to a hydraulic experiment model facility, in particular to a stable high-speed variable-angle water entry experiment device for a rotating object at a constant speed. Background technique [0002] The problem of water entry of objects widely exists in many fields such as daily life, engineering, and scientific research, such as water entry of reentry capsules, submarines, aircraft forced landings, and athletes diving, etc. It has important value in theory and practical application. Although the process of an object entering the water is only a very short transient process, this short process involves strong nonlinear free surface motion and fragmentation, turbulence and eddies, motion and deformation of the object, coupling interaction between the object and water, etc., making this process It occupies an extremely important position in the whole movement process of the moving body. Because high-speed moving objects, such as torp...

AI Technical Summary

Problems solved by technology

At present, the existing experimental devices for objects entering water generally adopt the method of freely falling objects into the water to obtain the initial velocity of the object entering the water, and generally do not consider the rotation of the object and the angle of entering the water, it is difficult to truly simulate high-speed objects such as missiles, bullets, torpedoes, etc. The water entry process of rotating objects makes it difficult to provide a strong and reliable basis for the actual design and application of such objects due to the lack of experimental data for high-speed rotating objects entering water at varying angles that are close to reality.

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