摘要
喷注器、喷嘴是低温液体火箭动力系统的核心部件,其雾化特性对燃烧效率和燃烧稳定性有直接的影响。通过激光相位多普勒测量系统(Phase Doppler Particle Analyzer简称PDPA)可以获得不同设计参数下喷雾场的粒径分布等重要数据。标准气溶胶发生器是校准和测试激光相位多普勒测量系统的基准源,通过其产生的标准粒子可以调校和修正系统测量误差。结合液体火箭动力系统喷注器雾化测量特点和散射粒子特性,对比分析了几种典型粒子发生技术,最终选择振动孔式单分散粒子发生器作为PDPA系统校准的基准源,并提出了一种标准气溶胶发生器的分析评定方法,通过该方法分别获得了发生器的均匀性、球形度、精度和稳定性等技术性能指标,证明该型发生器在喷注器雾化光学测量校准应用中具有适应性和可靠性。
The injector and nozzle are the core components of the cryogenic liquid rocket propulsion system,whose atomization properties have a direct effect on the efficiency and stability of combustion.Significant data such as the particle diameter distribution of the atomization field of different design parameters can be obtained by means of phase Doppler particle analyzer（ PDPA）. The standard aerosol generator is the reference source for the calibration and testing of PDPA. The standard particle produced by the standard aerosol generator can be used to calibrate and correct the system error. In combination with injector＇s atomization measuring characteristics and scattering particle＇s features of the liquid rocket power system,several typical particle generating technologies are compared and analyzed. On the basis of this,the vibration orifice monodisperse particle generator is selected as the reference source for calibration of PDPA,and an analysis and assessment method of the standard aerosol generator is proposed. With this method,the uniformity,sphericity,accuracy,stability and other technical performance indexes of the generator are obtained. The results prove that the generator is adaptable and reliable in the aspects ofoptical measurement and calibration of injector＇s atomization.
作者
宋戈
连军伟
丁振晓
SONG Ge(Beijing Aerospace,LIAN Junwei,DING Zhenxiao Propulsion Institute,Beijing 100076,China)
出处
《火箭推进》
CAS
2018年第4期54-59,67,共7页
Journal of Rocket Propulsion
