A separate booster rocket will be necessary to break the craft out of Earth orbit. 助推火箭分离器需要有强大的推力使航天器脱离地球轨道。
SpaceX wanted to bring its first stage booster back to Earth for a simple reason: the rocket boosters that are typically jettisoned after their fuel runs out cost millions of dollars to develop and manufacture. SpaceX公司想回收一级火箭助推器的原因很简单:推进器的研发和制造过程都耗费了巨资,燃料用尽后,它们就会被当做垃圾丢弃。
Only the booster's fiery tail was visible as the rocket ascended through a cumulus cloud and then arced over the ocean, headed for space. 火箭上升穿透积云、横越海洋、朝著太空前进,我们只能隐约看到助力器下方炽烈的火焰尾。
You have nothing to fear, for Mars will act like a booster rocket to your career to lead you precisely where you want to go. 你没有什麽好害怕,火星会好像火箭推动器一般,在事业上带你到你想到的地方。
They would be built from shuttle booster rockets, fuel tanks and main engines, as well as moon rocket engines. 新型运载火箭将由飞船助推火箭、料箱、发动机以及月球火箭发动机组成。
BERLIN-Scientists on Tuesday readied a Russian booster rocket carrying a European-built probe aimed at exploring the hot, dense atmosphere around Venus. 科学家准备发射带有欧洲制造的探测器的俄国助力火箭,探索环绕金星外炙热的高密度的大气层。
Perched on the shoulers of the booster is the second stage, the most powerful hydrogen-fueled rocket ever built. 放在助飞火箭上的是第二节,那是迄今制造的最强大氢燃料火箭。
Me and everyone else in the system, booster rocket. 我和所有其他人都进入系统了,助推火箭。
The booster design on flat flight solid rocket Flying 平飞固体火箭助推器设计
The purpose of the paper is to study the interior ballistics in nozzleless booster with solide propellant rocket ramjet engine with one dimension quasi steady equations. 采用一维准定常方法,对整体式固体火箭冲压发动机的无喷管助推器内弹道进行了计算。
In comprehensive consideration of flight vehicle system constraints, trajectory design, aerodynamic characteristics and solid rocket booster design, a series of system/ aerodynamics/ trajectory/ solid propellant integration design analysis and optimization models for solid rocket booster of flight vehicle were derived. 综合考虑飞行器总体设计约束、轨道设计、气动特性与固体火箭助推器设计间相互影响的情况下,建立了飞行器固体火箭助推器总体/气动/轨道/动力多学科的系统分析模型和设计优化模型。
The paper presents a CAD system developed for solid propellant ramjet rocket motor design. It includes gas generator design, booster chamber design, air inlet design, performance evaluation of a ramjet rocket motor and missile trajectory demonstration. 针对固体火箭冲压发动机的特点,研制了固体火箭冲压发动机CAD软件,该软件系统包括了燃气发生器设计、助推补燃室设计、进气道设计、发动机性能计算和飞行弹道的计算。
The rocket reaches the predicted flight velocity after the operation of booster is finished, then the sustainer starts work during which the thrust of rocket is equal to the resistance acting on the rocket, while the lift of the rocket is equal to its weight. 助推器工作结束后,火箭达到预定飞行速度,主发动机开始工作,使火箭的推力等于其所受阻力,同时火箭产生的升力等于其重力,保证火箭可等速飞行;
With the rapid growth of the tourism, China has become one of the most ideal resorts in the eyes of tourists all over the world. The ever increasing tourism economy has become a powerful booster rocket of the growth of national economy. 我国旅游业正高速发展,已经成为世界各国旅游者心目中最为理想的旅游目的之一,旅游经济持续增长,已成为国民经济增长的强力助推器。