推进技术 ›› 2009, Vol. 30 ›› Issue (5): 633-637.

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基于复摆模型的多脉冲冲量耦合系数测量方法

文明,叶继飞,熊勇,金星   

  1. 装备指挥技术学院;装备指挥技术学院;空军驻辽宁地区军事代表室;装备指挥技术学院
  • 发布日期:2021-08-15
  • 基金资助:
    国家“九七三”项目(61328);国家自然科学基金项目(10672184)

Measuring method of multiple-pulse impulse coupling coefficient based on compound pendulum model

  1. Inst.of Equipment Command and Technology,Beijing 101416,China;Inst.of Equipment Command and Technology,Beijing 101417,China;Military Representative Office of PLA Air Force in Liaoning Area,Shenyang 110034,China;Inst.of Equipment Command and Technology,Beijing 101419,China
  • Published:2021-08-15

摘要: 在单脉冲冲量测量方法的基础上,增加激光脉冲提取和摆杆控制单元,提出了一种基于复摆模型的多脉冲冲量耦合系数测量方法。分析了多脉冲的两种测量模式及实现流程,解决了数据处理面临的新问题,并对该方法进行了检验,结果表明:所设计的激光脉冲提取和摆杆控制单元满足25Hz频率要求,可实现在40ms内提取多脉冲序列的任意一个脉冲;模拟多脉冲序列下测得两种模式15°锥形喷管的冲量耦合系数为371.0~375.3N/MW,具有很好的一致性。该方法可用于吸气式激光推进的多脉冲性能研究,并作为其他多脉冲研究方法的有效补充。

关键词: 激光推进;复摆;多脉冲;冲量耦合系数;测量模式

Abstract: A measuring method of multiple-pulse impulse coupling coefficient based on compound pendulum model was presented,in which a laser pulse extracting and a pendulum controlling unit was added to the single-pulse impulse measurement system.Two multiple-pulse measurement patterns and their implementation procedure were analyzed.Then new problems of data processing for the maximal angle were solved.Finally,the multiple-pulse measuring method was tested.Results indicate that the design of the laser pulse extractor and pendulum controller meets the 25Hz frequency requirement and any pulse in the multiple-pulse sequence can be extracted within the pulse interval of 40ms;As to a analog multiple-pulse sequence,the impulse coupling coefficients in both measurement patterns coincided well with each other,which ranged between 371.0 N/WM and 375.3 N/MW with a 15-degree conical nozzle.The measuring method can be applied in the study of multiple-pulse performance in air-breathing laser propulsion and it can work as a complement for other multiple-pulse research methods.

Key words: Laser propulsion;Compound pendulum;Multiple pulses;Impulse coupling coefficient;Measurement pattern