Accelerating life test design on solid lubrication of the bearing used in the space

Solid lubrication is widely used in the space mechanical moving components, which are the important parts of spacecrafts or scanning earth sensors. In order to study the failure mode of solid lubricant and evaluate the mechanical system reliability, the Accelerated Life Test (ALT) is developed to accelerate failure by increasing the test stress. An example is given to explain how to do ALT design in this paper. The feasibility, the principle and methods of the ALT for the space mechanical moving components using solid lubricant were discussed. It is pointed out that selecting rotation speed as the accelerating stress of ALT is feasible when using solid lubricant.