Whereas chemical rockets waste too much propellant to reach a net change in spacecraft velocity, electric thrusters can do exactly the same mission using just a small fraction of the propellant.
鉴于化学燃料火箭浪费太多的推进剂难以实现飞船速度的静变化，电力推进器仅仅使用一小点推进剂就可以做同样的任务。
Some satellites come equipped with a rocket engine and propellant tank so controllers can aim their descent into an ocean instead of a neighborhood, but not all.
而有些卫星则装配了火箭发动机和推进剂贮箱，这样可以控制它们的坠落路线，将其引导坠落到海洋之中，而不是坠落到居民区里。
Neil McClelland, a spokesman for Kleinmann in Britain, said the signs so far were that the culprit was the anti-corrosion liquid inside the propellant can.
克莱恩曼公司在英国的发言人NeilMcClelland说，到目前为止已有迹象表明，气溶胶推进剂罐内的防腐液是问题根源所在。
Rocket motor test shows that the new UDMH/NTO bipropellant can satisfy the requirement of gel propellant of rocket motor design.
发动机试验表明：新的UDMH/NTO双组元凝胶体系能够满足发动机设计对凝胶推进剂的要求。
It is shown that effects of many factors on combustion rate of propellant can be properly predicted by use of this model.
结果表明，该模型能正确地预测许多因素对推进剂燃烧速率的影响。
As mentioned above, three parameter VFD model can characterize the viscoelasticity of solid propellant. Applied it to SRM dynamic analysis, time and frequency domain response can be calculated.
综上所述，三参数VFD模型能够很好的反映推进剂的粘弹特性，将它用于固体发动机动力学分析，可以得到药柱在时域和频域内的动态响应。
This method can quickly and accurately check and diagnose the potential fault of the liquid propellant store and transport, which would be benefit for liquid propellant safe store and transport.
该方法能快速准确的检测和诊断液体推进剂贮运的潜在故障，对推进剂安全贮运有一定裨益。
The radial acceleration forces can cause greater retention of the solid phase combustion products near the propellant surface.
径向加速度的力量可以造成更大的保留固相燃烧产物附近的推进剂表面。
The theoretical calculation results of energy characteristics for smokeless modified double-base propellant with ACP show that ACP can decrease the energy of the propellant.
含a CP的无烟改性双基推进剂能量特性理论计算表明，ACP对推进剂的能量影响较小。
Launch capability of liquid rocket engine can be improved by propellant utilization system.
采用推进剂利用系统可以提高运载火箭的发射能力。
An identification technique was presented for estimating the impurity level in propellant and the properties of exhaust afterburning, which can not be measured simply by experiment.
提出用参数辨识确定推进剂中钾、钠杂质含量以及后燃对喷焰微波衰减影响程度的方法。
Electric propulsion system offers specific impulse at least an order of magnitude higher than those of chemical thrusters, so propellant masses can be reduced by the same factor.
电推进系统具有比化学推进器最少高一个数量级的比冲，所以采用电推进系统可以大量减少推进剂质量。
The combustion catalyst adopted by ordinary double base propellant can adjust the burning rate. It's necessary to study further on the combustion mechanism.
该推进剂具有低特征信号、低易损性等特点，用一般双基药所采用的燃烧催化剂可调节燃速，深入研究其燃烧机理很有意义。
Experimental results show, the ignition and combustion process of propellant can be effectively modulated by controlling the electric discharge behavior of pulsed power supply.
等离子体点火密闭爆发器定容实验研究表明，通过对电能释放规律的控制，能有效调节火药的点火与燃烧过程。
The burning rate testing shows that the pressure exponent can be decreased, and the burning rate can be broaden by the selected additives entering into the gas generator propellant with low residents.
通过燃速测试，筛选的添加剂加入到低残渣燃气发生剂体系中能够拓宽燃速范围，同时也能降低压强指数。
The experimental results indicate that coarse aluminium powder can be used in HTPB propellant.
结果表明粗铝粉在推进剂中使用是可行的。
The result shows that coating boron can be reduced the viscosity of boron-based propellant greatly.
结果表明：对硼进行表面包覆，可以大幅度降低推进剂药浆的粘度。
The results of the burning rate measurement showed that the nanometer sized lead oxide can play a role in decreasing the pressure exponent of NEPE propellant.
通过纳米氧化铅在NEPE推进剂中的实际应用效果表明：纳米氧化铅可有效的降低NEPE推进剂的燃速压力指数。
According to the trait of rocket propellant a kind of protective gloves made of composite fluorine rubber is developed which can be used to protect the skin of red fuming nitric acid worker.
针对火箭推进剂作业的特点，研制了一种以复合氟橡胶为主体材料的防护手套，可用于红烟硝酸作业人员的皮肤防护。
Only when the resonant cavity of microwave Plasma Thruster (MPT) is under the resonant state, the microwave energy can heat propellant gas to produce thrust efficiently.
微波等离子推力器(mpt)谐振腔只有在谐振状态下，微波能量才能被高效地用于加热工质产生推力。
The research productions can be used to comprehend LTSC mechanism further and control the quality of coating propellant.
研究结果对深入理解包覆药的低温感机理及控制包覆药质量有积极的指导意义。
Its can be applied to evaluate the harmfulness of the liquid propellant rocket explosions for the space vehicle launching site.
理论和实验研究结果可用于航天发射场发生液体火箭爆炸的危害性评估。
The material which the liquid-propellant rockets burn to make the jet gases is liquid. This is something like gasoline, or kerosene, or alcohol that can brun.
液化推进火箭通过燃烧产生喷气的材料是液体；这种液体有点像汽油、煤油或酒精一类燃料。
The burning rates and the plateau range of the propellant containing KD can be adjusted by means of the change of composite catalysts.
含KD的推进剂燃速和平台范围可通过组合催化剂的变化来调节。
The calculation results can provide reference for heat transfer process analysis of gun barrel and safety of propellant charge.
计算结果为分析火炮身管传热过程及发射装药安全性提供参考。
The powder gas, generated continuously due to burning of propellant forms air-cushion among propellant grains, which can buffer and protect propellant grains from bumping, impacting and extruding.
发射药燃烧时不断产生的燃气在药粒之间形成气垫，对药粒的撞击、挤压起到缓冲保护作用。
It was stable, economical, practical and easy to repeat. Conclusions Injury caused by the explosion of liquid propellant can be simulated by using the blast wave tube and the intoxication tank.
结论利用生物激波管冲击和染毒柜染毒相结合的形式可以模拟复制现场液体火箭推进剂爆炸致冲毒复合伤的动物模型。
It is indicated by the tests that provided a suitable binder is selected, the design requirements can be met by assembling double base propellant chunks.
实验结果表明，只要选择适当的黏结剂，通过对双基药块进行黏合组型可满足设计要求。
It is indicated by the tests that provided a suitable binder is selected, the design requirements can be met by assembling double base propellant chunks.
实验结果表明，只要选择适当的黏结剂，通过对双基药块进行黏合组型可满足设计要求。
应用推荐