一种旋转失重模拟试验装置设计

为了验证某些航天产品在同时满足失重和自旋条件下的工作性能，设计了一种旋转失重模拟试验装置，由上下独立的单端承载旋转机构和转动平稳释放机构装配而成。文章给出装置的设计原理、转动应力参数仿真和平稳释放实现方法等，以及采用的关键技术。国内首例高速自旋失重试验的验证结果表明，旋转失重试验装置的使用克服了传统试验方法无法同时提供旋转环境和失重环境的局限性，在有效避免共振的前提下，实现产品在3.5 r/s转速下平稳下落，倾斜角度未超过1°，试验结果满足设计要求。

A design of rotating and weightlessness simulation test device

In order to verify the working performance of some aerospace products under simultaneous weightlessness and self-rotation conditions, a simulation mechanism is designed by assembling two independent mechanisms, namely, the upper single-end bearing rotary mechanism and the lower stable rotation release mechanism. This paper presents the design principle, the simulation of the rotary stress parameters, and the method and the steps for implementing the stable rotating release. The results of the high-speed spin and weightlessness test, as first carried out in China, show that with the designed device, better than the traditional test method, both the rotating environment and the weightlessness environment can be provided, and, under the premise of effectively avoiding the resonance, the test piece may fall smoothly at a speed of 3.5 r/s with a tilt angle not more than 1°, that well meets the design requirements.