Propulsion is provided by a rocket engine, rather than a propeller and rudder, which makes steering difficult.
推进器是由火箭发动机提供的，而不是螺旋桨和方向舵，这使得转向变得困难。
One might think that fusion propulsion requires some exotic fuel to propel a rocket a million-or-so-times more energetically than standard chemical fuels.
有人可能会认为聚变推进需要一些能量高于标准的化学燃料一百多万倍的稀有燃料推进一个火箭。
As part of this exploration plan, 2015 is now the deadline for finalizing a heavy-lift rocket design, and there will be renewed focus on advanced propulsion systems and other technologies.
探索计划要求重载火箭的研制需要在2015年之前完成，到时还将会重新集中研发推进系统及其他科技项目。
So far NASA is exploring two options for propulsion there? A nuclear thermal rocket and a chemical engine.
迄今为止NASA研究了两种前往那里的备选推进器：核热火箭和化学发动机。
Rocket motors have many advantages over other forms of propulsion.
火箭发动机比其他推进器有许多优点。
The accelerating development of the space technology and the rocket weapon technology calls for increasingly high reliability of the rocket propulsion system.
随着航天与火箭武器技术的迅猛发展，对推进系统的可靠性要求越来越高。
The exhaust velocity, though, is enormous—more than ten times that of a chemical rocket—and this makes ion propulsion extremely efficient.
但其排气速度却异常惊人，大约为化学燃料火箭的十倍—这使得离子推进器的效率非常高。
This paper attempts to analyse the tendency to develop liquid propellant rocket propulsion technology according to the requirements o launch vehicles and spacecrafts.
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。
According to a predetermined trajectory, ballistic missile with rocket engine propulsion takes a flight to intended targets under the action of the control system.
弹道导弹是用火箭发动机推进，在控制系统作用下按预定的弹道飞行至预定攻击的目标。
Strutjet is a new kind of Rocket Based Combined Cycle (RBCC), and is an integrated propulsion system that can satisfy low cost and high performance requirements.
支板簇引射发动机是火箭基组合循环(RBCC)方案的一种基础动力，是为满足低费用高性能要求而提出的组合推进系统。
Gel propellant is a new kind of propellant for rocket propulsion and other gas generator.
胶体推进剂是火箭推进和其它燃气发生器的新型待选推进剂。
A gas flow model with laser plasma as heat source was developed based on axial symmetric Euler equations in the laser propulsion rocket engine absorption chamber.
以轴对称非定常欧拉方程为基础，建立了激光推进火箭发动机吸收室内纯气相单组分、以激光等离子体为内热源的流场模型。
The push power be produced is very tiny but the key point is that compare to produce same push power ion propulsion needs lesser fuels than traditional rocket.
由此产生的推力非常微小，但关键的一点是，对于产生相同的推力而言离子推进器所需的燃料要比传统火箭少。
A pulse detonation rocket engine (PDRE) is a new propulsion system that generates thrust by using high-temperature and high-pressure air produced by pulse detonation waves.
脉冲爆震火箭发动机是一种利用脉冲式爆震波产生高温、高压燃气发出的冲量来产生推力的新型推进系统。
The present situation and progress of investigation on rocket based combined cycle (RBCC) propulsion system was introduced both at home and abroad in details.
对火箭基组合循环(RBCC)推进系统的国内外研究现状和进展进行了详细综述。
Some information on the progress of new techniques of nondestructive testing (NDT) applied in solid rocket motor propulsion and de-bonding of multiple interface is discussed in this paper.
文中阐述了无损检测新技术在固体发动机推进剂及多界面脱粘方面取得进展的部分情况。
On the basis of theoretical calculation analysis and experiment research, the paper proposes a new raising non-con-control rocket distrubution way. which is a step propulsion plan.
本文在理论计算分析和试验研究的基础上提出了提高无控火箭密集度的一个途径，即阶梯推力方案。
To overcome the difficulties on acquiring enough fault modes from ground and flight test data, the failure process for liquid propellant rocket propulsion systems was modeled.
为克服由于试验或飞行数据不足而无法获取系统足够故障模式的问题，开展了液体火箭推进系统故障过程建模与计算机仿真研究工作。
An calculating method for design parameter optimization of the propulsion system of the sounding rocket is given.
提出了探空火箭动力系统设计参数优化计算方法。
The general integral equations are derived for liquid and gas components of space propulsion systems with liquid propellant rocket engine.
针对采用液体推进剂火箭发动机的空间推进系统，推导了系统液路和气路的通用积分形式方程。
It is laid in the sea bottom and will rise to surface with its rocket propulsion.
它被储存在海底和将使用它的火箭发动机快速上浮到水面。
Under the conditions of the given payload and the highest launching height, the design parameters of the propulsion system are selected to minimize takeoff mass of the rocket.
在给定有效载荷、最高射高的条件下，选取动力系统的设计参数使火箭的起飞质量最小。
Powered by ion propulsion instead of conventional rocket fuel, Dawn slid around Vesta on July 15 after a 1.7 billion-mile cruise.
以离子助推而非传统火箭燃料的“黎明号”在7月15日进入灶神星轨道之前已进行了一次17亿英里的巡航。
The liquids employed for rocket propulsion are called propergols.
多级火箭是装有一台以上发动机的火箭。
The liquids employed for rocket propulsion are called propergols.
多级火箭是装有一台以上发动机的火箭。
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