Recent progresses of laser-driven flyer technique and micro-space debris hypervelocity impact tests in CAST

摘要

Laser-driven flyer technique (LDFT) shows many advantages in simulating micro-space debris hypervelocity impacting effects. In this paper, some recent progresses in laser-driven flyer system for space debris hypervelocity impact simulations researches conducted in CAST were reviewed and introduced, including: 1) Theoretical analysis of flyer velocity is conducted based on Lawrence Model; 2) A new kind of velocity in-situ measurement technology is developed for laser-driven flyer system;3) Flyers were accelerated up to 9 km/s with good repeatability using two layers targets; 4) Hypervelocity impact experiments of micro-space debris on spacecraft surface materials were carried out, and the degradation laws of material functional performance were obtained; 5) Cumulative damage evaluation method is studied; 6) Diamond-like Carbon (DLC) film is employed to protect the optical materials against micro-space debris impact. At last, the new trend of laser-driven flyer hypervelocity impact research is addressed.