单基发射药弹道可靠度和可靠储存寿命

THE RELIABILITY AND RELIABLE STORAGE LIFE OF BALLISTICS FOR A SINGLE-BASE PROPELLANT

以５７高炮射击数据来检验发射药弹道性能参数（初速和膛压）的分布函数，根据合格品和堪用品的弹道性能允许界限和射击试验的样本均值及标准偏差，评估了１１／７单基发射药的弹道可靠度。还通过提高温度老化该发射药，利用密闭爆发器模拟测试弹道性能多数的技术，获得这些多数的退化率和退化率温度系数，预测了２０℃下不同储存年限的弹道性能可靠性置信下限。同时以两个温度下老化样品的射击结果来验证密闭爆发器的模拟测验结果。

In this paper the distribution functions of the ballistic performance parameters(muzzle velocity and peak pressure) were tested by the fire data from a 57mm antiaircraft gun.Based on the tolerance limits of the ballistic requirements for the qualified and available products and via the sample means and standard deviations of these parameters from the fire tests,the reliability of ballistic performance for a single base artillery propellant 11/7 was estimated.The deterioration rate and deterioration-temperature factor of ballistic performance parameters for the single-base propellant aged at elevated temperature have been obtained by a closed bomb technique simulating ballistic test and the confidence lower limits of reliability for ballistic performance with different storage period at 20℃ were also predicted.The results obtained from simulating test in closed bomb for various aging time at two temperatures werealso examined by those fire tests.