火箭发动机

Liquid propellant rocket engine ; Numerical simulation ; Mathematical model ; Simulation model

液体推进剂火箭发动机；数值仿真；数学模型；仿真模型

Through the analysis, formulae for the power cycle efficiency of liquid propellant rocket engines are set up.

一、引言液体火箭发动机动力循环的概念是涡轮泵输送系统中涡轮工质的能量转换过程。

Liquid propellant rocket engine ; Failure mode ; Monitoring system ; Fault diagnosis.

液体推进剂火箭发动机；故障模式；监控系统；故障诊断

Liquid propellant rocket engine ; Fault detection ; Fault diagnosis ; Monitoring system

液体推进剂火箭发动机；故障检测；故障诊断；监控系统

Liquid propellant rocket engine ; Monitoring ; Fault diagnosis

液体推进剂火箭发动机；监控；故障诊断

A current mold el of combustion in LOX/hydrocarbon rocket engines is presented.

本文提出了一个通用的液氧/烃液体火箭发动机燃烧模型。

Rocket engine ; jet nozzle ; numerical control cutting/loxodrome ; cutter interference

火箭发动机；喷管；数控切削/等倾角螺旋线；刀具干涉

Fluent software was used as a calculaˉ tion platform, and its UDF compiler was used to inject mass, mome ntum and energy of ignition gas and propellant gas into chamber. Combining with kˉε twoˉequation turbulence model and Pˉl radiation model, the 3ˉD nume rical simulation of ignition transient process of some solid rocket motor with st arˉshaped charge and a cove was conducted.

文中以Fluent软件为计算平台，采用UDF编译来实现点火燃气和推进剂燃气的质量、动量、能量向燃烧室的注入，结合 kε两方程湍流模型、 P l 辐射模型对某有堵盖的星形装药固体火箭发动机的点火瞬态过程进行三维数值计算。

There are some characteristics for reliability growth test evaluation of liquid rocket engine, such as its field test data is small sample, there are multi-kind stresses act on the system during accelerated life test, its life test data belongs to a dynamic parent population.

液体火箭发动机可靠性增长试验的特点有：系统现场试验为小子样、加速寿命试验中存在多种应力综合作用、可靠性增长试验数据属于动态统计母体。

In the paper, technology actuality and development trend of pintle injector variable thrust rocket engine at home and overseas are summarized.

述了针栓式变推力液体火箭发动机国内外的发展现状与趋势，分解了发展针栓式变推力液体

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。