Burning rate of AP/HTPB base-bleed composite propellant under free ambient pressure

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• 作者：Lingke Zhang ; ^{nustzlk@126.com} ; Ruyuan Tian ; Zhuwei Zhang
• 关键词：Burning rate ; Base bleed projectile ; AP/HTPB composite propellant ; Bimodal AP ; Free ambient pressure
• 刊名：Aerospace Science and Technology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：62
• 期：Complete
• 页码：31-35
• 全文大小：767 K
• 卷排序：62

文摘

Base bleed is an important extended-range technology wherein low-speed mass flux is injected with high temperature by using an ammonium perchlorate (AP)-based burning composite propellant. The range of a projectile can be increased effectively by controlling the burning rate of the propellant. In this study, the burning rate of a type of bimodal AP/hydroxyl-terminated polybutadiene (HTPB) base-bleed composite propellant was measured under ground free ambient pressure (0.99 atm) by using laser ignition, high-speed video, and image-processing technology. As it is difficult to determine the existing burning rate of this bimodal AP/HTPB base-bleed composite propellant, a numerical calculation model of the burning rate was constructed. The numerical calculation result, that is, 1.59 mm/s, agrees well with the experimental value of 1.607 mm/s.