在高燃速推进剂中粗颗粒铝粉的作用

THE FUNCTION OF COARSE-PARTICLE ALUMINIUM POWDER IN HIGH BURNING RATE SOLID PROPELLANT

本文用50μm铝粉作复合固体推进剂金属燃料,与大量超细氧化剂(AP)组成合理级配,改善了药浆流变特性,有利于提高燃速。50μm铝粉的推进剂药条的燃速及φ118发动机推进剂的燃速比相应的填加30μm铝粉的高2～3mm/s。讨论了50μm铝粉对推进剂工艺和燃速所起的作用。

The composite solid propellants containing 50μm Al powder as a combustible ingredient are described. An excellent aggregation composed of 50μm Al powder and a large quantity of finer particle size of oxidizer (AP) ameliorats the Theological characteristics of propellant slurry and increases the burning rate. The burning rate of the strand and the propellants in a test motor with φ118 diameter increases by 2-3mm/s with the addition of 50μm Al powder compared with the addition of 30μm. The effects of 50μm Al powder on the burning rate and propellant technology are discussed.