Three-dimensional negative stiffness elastic frame

Abstract

A three-dimensional negative-stiffness elastic frame belongs to the technical field of aircraft deformation, solves the problem of high energy consumption of an existing bullet controlled by a deflection head, and comprises a cylinder wall provided with a plurality of hollowed-out parts, the hollowed-out parts are arranged in a delta shape, and the left-right direction of the delta shape is arranged in the circumferential direction of the cylinder wall; the cylinder can be a cylinder, an elliptical cylinder, a square cylinder, a polygonal cylinder and the like, or a straight cylinder, a bent cylinder, a reducing cylinder and the like in any shape, and can be arranged according to the requirements of the head of the aircraft; due to the fact that the hollowed-out parts arranged in the shape like the Chinese character'pin 'are formed in the cylinder wall and are arranged in the circumferential direction of the cylinder wall, the cylinder wall can have the axial elastic deformation function like a spring, and overall deflection can be achieved. The above technology is the prior art. The cylinder wall reserved around each hollowed-out part arranged in the shape like the Chinese character'pin 'comprises a top beam, a bottom beam and vertical beams on the two sides; the top beam and / or the bottom beam reserved around each hollowed-out part arranged in the shape like the Chinese character'pin' are outwards convex or inwards concave curved beams; the method is used for aircraft deformation.

Description

technical field [0001] The invention belongs to the technical field of aircraft deformation, and in particular relates to a three-dimensional negative stiffness elastic frame. Background technique [0002] The flight control of aircraft such as ordinary bullets and arrows is mainly realized through the tail and canard. The canard located at the arrowhead can change the aerodynamic force to control the flight attitude through the rotation of the rudder blade, but the canard is easily affected by the shock wave at the arrowhead. Thereby reducing the control efficiency, and the existence of the canard will increase the resistance of the projectile body and interfere with the empennage, thereby adversely affecting its flight control. [0003] The deflection head control method is a unique missile control method. By changing the angle between the head and the axis of the missile body, the control torque can be generated through the pressure difference between the windward side an...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the greater the deflection angle of the missiles controlled by the deflection head, the greater the required driving force and the greater the energy consumption, a three-dimensional negative stiffness elastic frame is provided, and its technical solution is as follows:

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