关键词: 颗粒;侵蚀;喷管气流;氧化铝;固体火箭发动机

Abstract: Jet exhaust of solid rocket motor has serious effect on heat protection material. Especially, metal oxide particle play an important role in the erosion of material Surface.A method and formula for investigation of particle erosion was presented in the paper, and computational results are in accordance with experimental data.

Key words: Particle;erosion;Nozzle flow;Aluminium oxide;Solid ro-cket engine