Navigation device suppressing cavitation and controlling emerging posture

Abstract

A navigation device suppressing cavitation and controlling emerging posture is provided which relates to the technical field of underwater launching of submarine-launched missiles; the device comprises a navigation body head part, a navigation body cylinder and tail part control planes; the navigation body cylinder has a thin and long cylinder structure; the navigation body head part is fixedly installed on the top of the navigation body cylinder; the tail part control planes are vertical to the axis direction of the navigation body cylinder and are fixedly installed at the bottom of the navigation body cylinder; the navigation body comprises two tail part control planes which are symmetrically installed at two sides of the navigation body cylinder; the two tail part control planes are positioned at two ends of radial diameter of the navigation body cylinder. The invention provides a hydrodynamic force layout scheme that can avoid impact load due to cross cavitation collapse of air-water interface and can adjust tail elevator angle to control emerging postures.

Description

technical field [0001] The invention relates to the technical field of underwater launch of a submarine-launched missile, in particular to a vehicle body device for suppressing cavitation and controlling water exit attitude. Background technique [0002] Since the hydrodynamic and aerodynamic phenomena of the submarine-launched missile are very complex during the period from the barrel to the water, it presents the characteristics of high dynamic pressure, unsteady, multiphase flow and strong nonlinearity. Affected by various factors such as ocean currents and sea conditions, it is difficult to maintain the stability of the submarine-launched missile's underwater trajectory. The current engineering method is to use the cavitation shape to constrain the underwater trajectory and attitude of the submarine-launched missile. [0003] The cavitation phenomenon is a unique complex physical phenomenon that is strongly unsteady, nonlinear and random around the underwater high-speed ...

AI Technical Summary

Problems solved by technology

When the submarine-launched missile passes through the water surface, the cavitation collapse phenomenon caused by the sudden change of medium density will cause a large dynamic load, and may even break the missile body after exiting the water

[0004] In order to ensure the safety of submarine-launched missiles out of the water, the cavitation-suppressing head type is adopted, but this brings difficulties to the stability of underwater navigation attitude of submarine-launched missiles. Equal pressure exhaust underwater launch is an alternative, but the parameters of equal pressure exhaust It is very difficult to determine, which usually leads to problems such as backflow of seawater to the vent hole

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