根据航天器推进系统的时变性特点，在规则的专家系统方法基础上，提出了推进系统面向时态的故障检测和诊断方法。
A fault detection and diagnosis method based on the rule and time variation was presented based on the normal diagnostic expert system.
一旦进入太空，离子发动机将稳步推进航天器，最终达到的速度会比使用普通火箭的更高。
Once in space, ion engines steadily propel a spacecraft until it travels faster than it would have using a chemical rocket.
这艘无人航天器——灵感来源于20世纪70年代英国星际学会研究的核脉冲推进——理论上讲在发射后100年内抵达其目标恒星。
The unmanned space vehicle — inspired by nuclear pulse propulsion studies by the British Interplanetary Society in the 1970s — will ideally reach its target star within 100 years after launch.
制造一个成功的空间帆带来的好处是可以在无需推进剂的情况下加速航天器。
The reward for building a successful space sail would be to increase the velocity of a spacecraft indefinitely without the need for propellant.
根据实际的推进选择，以及航天器能够减速以环绕其目标公转的需要，目标恒星不能离地球超过15光年。
Given realistic propulsion options, and the requirement that the spacecraft can slow down to orbit its target, the target star cannot be more than 15 light-years from Earth.
6秒之后，航天飞机的双固体燃料火箭推进器点火，固定航天器的爆炸螺栓切断，整个航天飞机一飞冲天。
After those six seconds, a shuttle? S twin solid rocket boosters ignite, explosive bolts holding the spacecraft down are severed and the entire stack soars spaceward.
此外，美国国家航空航天局（下文简称NASA）还计划测试一个完整尺寸的太阳帆，为航天器提供绿色推进能源，以及测试一个深空原子钟。
NASA plans to test a full-size solar sail for chemical-free propulsion and a deep space atomic clock.
本文试图根据运载火箭和航天器的需要来分析液体火箭推进技术的发展趋势。
This paper attempts to analyse the tendency to develop liquid propellant rocket propulsion technology according to the requirements o launch vehicles and spacecrafts.
在某些航天器中，也需要推进系统的快速响应能力。
In some cases, the propulsion system's ability of quick response is also required.
介绍了与电推进系统有关的空间环境效应的形成原因及其对航天器性能、寿命等的影响。
The reason of space environment effect related to electric thruster system and its affection to performance and lifetime of spacecraft were introduced in this paper.
正加速度的火箭：多节航天器上的辅助火箭的，这种火箭点燃后沿航天器运行方向推进，并分为几部分。
Of, relating to, or being an auxiliary rocket on a multistage spacecraft that is fired in the direction of the spacecraft's motion to separate the sections.
简述了深空探测对推进系统的需求、我国航天器液体推进技术的现状。
The requirements to propulsion system and the present of liquid propulsion technology in China are analyzed.
推进剂泄漏检测技术是关系到航天器正常运行和安全发射的关键技术之一。
The propellant leak detection technology is one of the key technologies for spacecrafts launch and operation.
推进剂泄漏检测技术是关系到航天器正常运行和安全发射的关键技术之一。
The propellant leak detection technology is one of the key technologies for spacecrafts launch and operation.
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