装药尺寸对高氯酸铵/端羟基聚丁二烯底排药烤燃特性的影响

doi:10.3969/j.issn.1000-1093.2017.08.010

兵工学报 ›› 2017, Vol. 38 ›› Issue (8): 1532-1540.doi: 10.3969/j.issn.1000-1093.2017.08.010

装药尺寸对高氯酸铵/端羟基聚丁二烯底排药烤燃特性的影响

李文凤¹，余永刚¹，叶锐²

（1.南京理工大学能源与动力工程学院，江苏南京 210094; 2.中国电子科技集团公司第38研究所，安徽合肥 230088）

收稿日期:2016-10-13 修回日期:2016-10-13 上线日期:2017-10-10
作者简介:李文凤（1990—），男，博士研究生。 E-mail：lwf801njust@163.com
基金资助:
国家自然科学基金项目（51176076）；江苏省研究生培养创新工程项目（KYLX16_0439）

Effect of Charge Size on Cook-off Characteristics of AP/HTPB Base Bleed Propellant

LI Wen-feng¹, YU Yong-gang¹, YE Rui²

(1.School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu， China；2.No.38 Research Institute,China Electronics Technology Group Corporation， Hefei 230088, Anhui， China)

Received:2016-10-13 Revised:2016-10-13 Online:2017-10-10

摘要/Abstract

摘要： 为研究装药尺寸对高氯酸铵（AP）/端羟基聚丁二烯（HTPB）底排药烤燃响应特性的影响，基于AP/HTPB两步分解反应机理，建立底排药柱烤燃计算模型。分别选取装药长度为72 mm 和内孔直径为 43 ~53 mm、内孔直径为43 mm和装药长度为72~90 mm的圆环柱状底排药，在1.0~ 10.0 K/min加热速率下对某底排装置的烤燃特性进行数值模拟。结果表明：在相同加热速率和装药长度条件下，随着装药内孔直径的增大，底排药的烤燃响应时间缩短；当装药内孔直径不变，装药长度增加至90 mm，底排药的烤燃响应时间明显缩短；装药尺寸的变化对底排药的烤燃响应位置的影响较小；在1.0~2.5 K/min中速烤燃条件下，随着内孔直径和装药长度分别增大，底排药的烤燃响应温度逐渐增大；在5.0~10.0 K/min快速烤燃条件下，装药尺寸的变化对底排药的烤燃响应温度的影响较小。

关键词: 兵器科学与技术, 高氨酸铵/端羟基聚丁二烯底排药, 装药尺寸, 烤燃, 数值模拟

Abstract: To investigate the effect of charge size on the cook-off characteristics of ammonium perchlorate (AP)/ hydroxyl-terminated polybutadiene (HTPB) base bleed propellant, a cook-off model of base bleed propellant grain is established based on the two-step decomposition reaction mechanism of AP/HTPB. The AP/HTPB propellant is 72 mm in charge length and 43-53 mm in grain diameter, as well as 43 mm in grain diameter and 72-90 mm in charge length. The cook-off characteristics of AP/HTPB base bleed propellant are simulated at the heating rates from 1.0 K/min to 10.0 K/min. The results show that the cook-off time is shortened with the increase in the grain diameter of charge. As the charge length of AP/HTPB propellant with same grain diameter is added to 90 mm, the cook-off time is shortened remarkably. The charge size has little influence on ignition position. At the medium heating rates of 1.0-2.5 K/min, the ignition temperature rises with the increase in grain diameter and charge length. At the fast heating rates of 5.0-10.0 K/min, the charge has a less effect on the ignition temperature of AP/HTPB propellant. Key

Key words: ordnancescienceandtechnology, AP/HTPBbasebleedpropellant, chargesize, cook-off, numericalsimulation

中图分类号:

李文凤，余永刚，叶锐. 装药尺寸对高氯酸铵/端羟基聚丁二烯底排药烤燃特性的影响[J]. 兵工学报, 2017, 38(8): 1532-1540.

LI Wen-feng, YU Yong-gang, YE Rui. Effect of Charge Size on Cook-off Characteristics of AP/HTPB Base Bleed Propellant[J]. Acta Armamentarii, 2017, 38(8): 1532-1540.

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装药尺寸对高氯酸铵/端羟基聚丁二烯底排药烤燃特性的影响

Effect of Charge Size on Cook-off Characteristics of AP/HTPB Base Bleed Propellant

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