Precision electronic equipment vibration isolator for spaceflight

Abstract

The vibration isolator for aerospace precision electronic equipment belongs to the vibration isolator, which is used for vibration isolation during the launch process and in the environment with large temperature difference on orbit. The present invention is composed of a metal bracket and a damping material. The profile of the metal bracket is a racetrack-shaped closed loop. The two straight sides of the racetrack-shaped closed loop have comb-shaped teeth, and the comb-shaped teeth on the two straight sides are arranged in a staggered manner. The entire metal bracket is externally composed of damping The material is vulcanized and wrapped, and after the damping material is wrapped, there is a space for deformation between the comb-shaped teeth of each straight side of the racetrack-shaped closed ring and its opposite straight side. The invention has the characteristics of high safety factor, high damping (resonance transmissibility ≤ 4), small size, small mass, overload protection, convenient loading and unloading, and flexible layout during use. It plays an effective and reliable vibration isolation role during the launch process; in the orbital environment, even if the space environment such as large temperature difference and strong radiation causes the high damping material to age and fall off, the metal bracket of the vibration isolator can still play the role of positioning support.

Description

technical field [0001] The invention belongs to a vibration isolator, in particular to a vibration isolator for aerospace precision electronic equipment, which is used for vibration isolation in the launch process and on-orbit environments with large temperature differences. Background technique [0002] The large number of levels and wide frequency domain characteristics of the vibration environment in the space launch process make the design of the vibration isolator face challenges. During the delivery of aerospace precision electronic equipment to the predetermined orbit, the vibration environment in the launch stage is quite harsh. The research report of the National Aeronautics and Space Administration (NASA TN D-6474, September, 1971.) pointed out that about 45% of aerospace equipment failures are caused by vibrations during launch. Today, ensuring that sophisticated electronics remain functional after launch into orbit remains a top priority in structural strength d...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a vibration isolator for aerospace precision electronic equipment, which solves the problems of the existing vibration isolator, such as the small energy consumption effect of the damping material and the aging and falling off in the environment of large temperature difference and strong radiation, and loses the positioning support function, so as to be suitable for aerospace Special vibration isolation and positioning of precision electronic equipment to meet the requirements of the space environment

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