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In the process of researching and producing G—type base bleed projectile,the re-sults of external ballistic property test have shown that the range can reach the technical require-ments but that it is usually difficult to reach the technical target about procision.The test re-sults measured by DR582 Rader indicate that the large dispersion of initial drag caused by u-nidentical ignition of base bleed unit is one of the main factors which influence the procision.A possible improved methed has been put forward... In the process of researching and producing G—type base bleed projectile,the re-sults of external ballistic property test have shown that the range can reach the technical require-ments but that it is usually difficult to reach the technical target about procision.The test re-sults measured by DR582 Rader indicate that the large dispersion of initial drag caused by u-nidentical ignition of base bleed unit is one of the main factors which influence the procision.A possible improved methed has been put forward by analyzing the ignition state of base bleedunit and discussing the test results of static ignition,static break ignition and external ballisticsof base bleed projectile. 在G型底部排气弹研制过程中,外弹道性能试验结果表明,射程可满足技术要求,而密集度则难以达到技术指标;DR582雷达测试结果说明,底排装置点火状态不一致造成底排弹起始段阻力散布大是影响密集度的主要因素之一。本文通过对底排装置点火和工作状态的分析,以及对底排装置静止点火试验、静止点火中止试验、底排弹外弹道试验結果的讨论,提出了可行的改进途径。 This paper shows several p~t curves of static ignition test of base bleed units whichhave been analysed and researched,states various phenomenon during the process of the ign-ition of base bleed units.The igrition properties of the base bleed units have been concludedand the improving methods favourable to the ignition of base bleed units have been put for-ward. 本文对底排装药静态点火试验的p~t曲线,进行了分析研究.阐述了底排装药被点燃时发生的各种现象,规纳出装药的点燃特性,提出了一些有利于底排装药点燃的改进方向. In this paper,10.6μm CO_2 laser is used as ignition energy source to ignite varioussolid propellants(black powder,11/7,6/7 powder coating rosin-camphor,and 6/7 powder coat-ing rosin-graphite)under atmospheric pressure,the ignition property of solid propellant,especiallythe combustion resistance prowder is studied,the ignition delay time and propellant surface ten-perature history are measured by using photodiode and thermocouple. The results are satisfied. 利用10.6μm CO_2激光作热源,在常压下对不同的固体火药[黑火药,11/7,6/7松樟(5%)(表面经松香障脑处理)及6/7松石(表面经松香石墨处理)]进行了点火试验,研究了发射药,特别是阻燃药的看火性能。实验中采用光电二极管和热电偶测量点火延迟时间及火药表面温度变化,结果令人满意。
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