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真空环境下微推力测量的研究 被引量:8
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作者 岑继文 徐进良 《宇航学报》 EI CAS CSCD 北大核心 2008年第2期621-625,636,共6页
详述了一种真空环境下的微推力测试方法:利用杠杆力的放大原理,将微推力值放大从而能够被传感器检测到。测试系统以真空油作为阻尼液,既适应了真空环境又使噪声信号得到了明显的减弱。实验结果表明在几百帕的真空绝压下推力值变化不大;... 详述了一种真空环境下的微推力测试方法:利用杠杆力的放大原理,将微推力值放大从而能够被传感器检测到。测试系统以真空油作为阻尼液,既适应了真空环境又使噪声信号得到了明显的减弱。实验结果表明在几百帕的真空绝压下推力值变化不大;流量在较粗的真空度下已达到临界值;流量和推力随入口压力的增加呈线性增加趋势。这些实验方法和规律对真空环境下的微推力测量具有一定的借鉴和帮助作用。 展开更多
关键词 推力 小卫星 型推进器 微推力测试 真空环境
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Experimental Investigation on Basic Prototype of Solid Propellant Impulsive Microthrusters 被引量:1
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作者 李世鹏 张平 《Journal of Beijing Institute of Technology》 EI CAS 2000年第3期347-352,共6页
A new type of impulsive microthruster and its measurement system were designed for the aim of testing the performance of a basic prototype of solid propellant impulsive microthruster. Two sets of tests were conducted.... A new type of impulsive microthruster and its measurement system were designed for the aim of testing the performance of a basic prototype of solid propellant impulsive microthruster. Two sets of tests were conducted. The tests show that the ignitor and the main charge of the microthruster match well, the dynamic and static capability of the test and measurement meets the test requirement and the result is creditable. The measured technical characteristics of the microthruster are that the ignition delay time is shorter than 0 3?ms, the total impulse is over 3?N·s, the operational time is shorter than 16?ms and the mass ratio of the thruster is 0 216. 展开更多
关键词 solid propellant rocket motor microthruster PROTOTYPE test and measurement technique
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