Innovative Metallized Formulations for Solid Rocket Propulsion

Several metallized solid rocket propellants,AP/Metal/HTPB in the ratio 68/18/14,were experimentally analyzed at the Space Propulsion Laboratory of Politecnico di Milano.Effects of the metals(micrometric and nanometric Al,B,Mg,and a variety of dual metals) on the performance of the propellant were studied and contrasted to a conventional micrometric aluminum(30 μm average grain size) taken as reference.It is shown that the propellant microstructure plays a fundamental role in controlling the critical aggregation/agglomeration phenomena occurring below and near the burning surface.Two specific effects of microstructure in terms of steady burning rate and average agglomerate size are illustrated.

固体火箭推进新型含能组分（英文）

针对2种含金属粉的固体推进剂——用于空间推进的标准AP/HTPB推进剂及ADN/GAP新体系的推进剂,分析了其配方,比较了这2种配方的理论热化学和实验燃烧性能的优缺点。分析结果表明,含双金属燃料和双氧化剂及活性粘合剂的体系被认为是空间探测任务的优化配方。仅讨论了实验室水平的测试,对于发动机的应用,需要进行全尺寸测试,以确保全面掌握此过程。