空间望远镜大尺寸快门寿命试验研究

Experimental Research on the Lifetime of Large Shutter of Space Telescope

摘要:

针对空间环境下的大面阵光学望远镜的大尺寸快门,设计了一种关于空间环境的高保真寿命试验方案。该方案以大口径真空罐为平台,充分考虑了大尺寸快门在空间运行时面临的复杂环境因素,为其提供了极为真实的在轨运行环境。针对该快门在轨开合100万次的寿命指标,设计了具体的试验方案,并搭建了高保真空间环境试验平台,利用加速寿命试验的原理使快门机构在真空罐中运行。结果表明该试验方案可为快门提供极为真实的空间在轨运行环境,能够支撑其完成100万次的开合动作。

Abstract:

Aiming at the large-size shutter of the large-area-array optical telescope in the space environment, a high-fidelity life test program for the space environment is designed. A large-caliber vacuum tank is used as the platform, and the complex environmental factors of large shutter in space operation are fully considered, providing a very real on-orbit operating environment for it. Aiming at the life index of the shutter opening and closing 1 million times on orbit, a specific test plan was designed, and a high-fidelity space environment test platform was built, which used the principle of accelerated life test to make the shutter mechanism operate in a vacuum tank. The results show that the test program can provide a very real space on-orbit operation environment for the shutter, and can support it to complete 1 million opening and closing actions.