A rotating experimental device for ventilated supercavitating vehicle for water tunnel experiments

Abstract

The invention relates to a ventilating super-cavitation vehicle rotation experimenting device for a water tunnel experiment. The ventilating super-cavitation vehicle rotation experimenting device aimsto realize synchronized self-rotations of a vehicle and a cavitating machine instead of self-rotation of the cavitating machine, and by making use of good leakproofness, of an integrated-mechanical-seal moving ring and an integrated-mechanical-seal stationary ring, during relative rotation, avoids the phenomena of gas leakage and liquid leakage of an original device during rotating.

Description

technical field [0001] The invention belongs to the research field of water tunnel experiments of supercavitating vehicles, and in particular relates to a rotating experimental device for ventilated supercavitating vehicles used for water tunnel experiments. Background technique [0002] Supercavitation is one of the effective ways to achieve drag reduction for underwater high-speed vehicles. The cause of supercavitation is that the flow around the body induces the formation of a low-pressure region, thereby reaching the saturated vapor pressure at this temperature, and finally cavitation occurs. However, the conditions for generating natural supercavitation with drag-reducing effect under natural conditions are extremely harsh, and the cavitation number is required to be less than 0.1, that is, the sailing speed is greater than 50m / s. According to the definition of cavitation number, when the liquid density is constant, there are three basic methods to reduce the cavitatio...

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Problems solved by technology

[0003] The existing various types of water tunnel experimental devices mainly focus on the research of the cavitator type of the vehicle body and the mechanical properties of the vehicle body at different angles of attack or sideslip. its own central axis rotation

Only a few patents have realized this function. For example, in CN205192722U, the spin of the cavitator under the experimental conditions of the water tunnel has been realized, but this device has the following disadvantages: 1. Only the spin of the cavitator can be realized, and the flying body itself cannot spin

2. Without a reasonable sealing structure, gas and water leakage will occur

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