Digital Structure Matching Verification Method between Large Spacecraft and On-Orbit Heat Flux Simulation Device

摘要

In vacuum thermal test for Spacecraft, Infrared Heating Tape Array (IHTA) is often used as On-orbit Heat Flux Simulation Device for Spacecraft. In order to improve the accuracy of Heat Flux Simulation, IHTA has to cover the whole surface of Spacecraft and the structure design margin of IHTA is within 50 mm. To confirm the structure of IHTA is compatible with Spacecraft, a set of digital structure matching verification method has been established. This method digitizes the structure of Spacecraft and IHTA into 3D models by Laser 3D Scanning then Structure Matching Verification of them can be done in software. The verification error of this method is better than 20 mm in the case of the structure size is not more than 10m. This method avoids the verification of physical structure matching, saves the development cycle of Spacecraft and reduces the operation risk.