TMA Space Camera Connection Reliability Design

With the application of aerospace remote sensing technology continues to expand, and continuously improve the level of application,widely used in national security, astronomical exploration, weather forecasting, environmental and disaster detection, earth resource exploration, photography mapping, marine research, urban construction,agricultural development and target and other aspects of the guidelines.Aerospace remote sensing technology to measure the level of a country’s scientific and technological development of important yardstick.For space camera, the optical system can test the ground state,emitting state in track flight status can maintain accuracy and stability,is to meet the basic requirements for imaging. Cameras in the process from the ground to space, you need to change a variety of environmental factors experienced gravity, temperature, pressure, radiation, etc.,and these factors may result in decreased spatial resolution camera, like a bad qualitative, functional failures and even system damage.With the continuous development of optical technology, people have become increasingly demanding caliber large photovoltaic systems,systems become more complex, while also increasing the design life ofthe camera, which put forward higher requirements for stability.In this paper, in order to improve the stability of TMA space camera in-orbit research work carried out the following aspects:1 discusses the TMA space camera current levels and trends of development, introduced its working principle and the basic structure;2, to discuss the mirror back support sleeve thermal expansion coefficient and mirror surface temperature change in the conditions of the relationship between the proposed liner thermal expansion coefficient selection method; discussion mirrors back the elastic modulus of the flexible connection with mirror surface in conditions of the relationship between temperature change, proposed flexible connection size selection method;3, for the mirror support near the hole in the large local temperature change conditions surface error, designed to increase new flexible connectors radial flexibility, improve temperature adaptation in ensuring the gravity conditions and dynamic characteristics of the premise sex;4, the structure for multi-camera bolted to study the effects of bolt preload dynamic characteristics.