Stability augmentation device for rotary AUV deformation stabilizing ring

Abstract

The invention relates to a rotary AUV deformation stabilizing ring stability augmentation device, and belongs to the field of hydromechanics and underwater vehicle maneuverability and stability. The device comprising a deformation stabilizing ring mechanism and rear stabilizing ring connecting pieces. The deformation stabilizing ring mechanism is a circular ring mechanism capable of stretching out and drawing back in the axial direction. The four rear stabilizing ring connecting pieces are of strip-shaped sheet structures, the four rear stabilizing ring connecting pieces are evenly distributed in the circumferential direction, ends of the four rear stabilizing ring connecting pieces are fixed to the outer edges of four fin plates of an AUV cross fin rudder respectively, and the other ends of the four rear stabilizing ring connecting pieces are fixed to the inner circumferential face of the deformation stabilizing ring mechanism respectively. On one hand, the control force and the control torque of the aircraft in a micro-speed state are improved by increasing the wetted area of the aircraft, and the axial length of the stabilizing ring and the display area of a stabilizing ring sheet are increased through the deformation of the stabilizing ring. And on the other hand, the water flow flowing through the cross rudder can be rectified, the influence of incoming flow on the wake flow of the aircraft is reduced, a beam effect is achieved on the wake flow of the underwater aircraft, and the influence of the wake flow on the stability of the aircraft is effectively reduced.

Description

technical field [0001] The invention belongs to the fields of hydrodynamics, maneuverability and stability of underwater vehicles, and in particular relates to a rotator type AUV deformation stabilization ring stabilization device. Background technique [0002] The stability surface and control surface of the rotary underwater vehicle determine its kinematic performance, and are usually arranged at the tail. As far as the heeling motion of the vehicle is concerned, the empennage can generate both control moment and recovery moment, as well as disturbance moment. Due to the emergence of environmental detection, information collection and precise manipulation tasks, higher requirements are put forward for AUV's underwater navigation stability. For example: when the underwater vehicle is performing underwater recovery work, the AUV is required to have low-speed navigation stability, so that the AUV can maintain a good attitude during the low-speed docking process to complete t...

AI Technical Summary

Problems solved by technology

The stability of the existing aircraft is difficult to ensure that the aircraft moves at a slight speed or even zero speed below 3kn

Under the condition of low speed of gyratory AUV, traditional AUV stabilizing device and traditional cross-shaped fin rudder system are difficult to provide stable recovery torque due to the decrease of hydrodynamic force due to the phenomenon of low-speed instability, so as to maintain the stability of AUV navigation.

Images