STW试验通讯卫星远地点发动机真空总冲测试技术

THE MEASURING TECHNOLOGY ON VACUUM TOTAL IMPULSE OF THE APOGEE BOOSTER FOR STW EXPERIMENTAL COMMUNICATION SATELLITE

本文介绍了影响STW试验通讯卫星固体推进剂远地点发动机真空冲测量的各种因素及其所造成的不确定度大小,着重介绍了推力、燃烧室压强、负压等参数的误差源.总结了该发动机高空模拟试车的经验,同时叙述了降低真空总冲测量不确定度的设想与实现途径.

Various factors acting on the measurement of vacuum total impulse of the apogee booster for STW experimental communications satellite and uncertainties resulting from them are presented in this paper. The error sources of parameters such as thrust, pressure, vacuum pressure etc are emphatically described. The e-xperiences of engine tests at simulated altitude conditions are reviewed. The imagination and the executive ways to reduce the uncertainties in vacuum total impulse measurement are also discussed.