It is of great significance to investigate performance characteristics and thrust augmentation mechanism in RBCC engine.
本文应用数值技术对支板式RBCC发动机，即支板火箭引射冲压组合发动机，引射模态的燃烧与流动现象进行了研究，探讨了RBCC引射模态的性能增强机理，主要有以下几方面：1。
The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load.
利用FLUENT软件数值计算了二维柔性鳍作升沉纵摇运动时的推力系数及推进效率，探讨了修正Bose变形方程、均匀载荷和非均匀载荷悬臂梁变形方程等三种柔性模式下纵摇轴位置对摆动鳍推进性能的影响，其中纵摇轴在尾缘处能够获得更大的推力，而最高的推进效率分别对应修正Bose模式下纵摇轴距首缘1/3弦长处和悬臂梁柔性变形模型下纵摇轴距首缘2/3弦长处。
The stability of thrust is mainly related to the sinusoidal degree of magnetic field distribution, so the way to improve the sinusoidal distribution of magnetic field is the major work to improve the motor performance.
该结构电机的输出推力稳定性主要与电机气隙磁场分布的正弦程度有关，提高气隙磁场分布的正弦性是改善电机伺服性能的重点。
Thrust ball bearings with cushions have the structure, cushions convey to the installation of spherical shape, it is aligning bearing performance, we can reduce the impact of the installation error.
推力球轴承还有带座垫的结构，由于座垫的安装面呈球面形，故轴承具有调心性能，可以减少安装误差的影响。
Performance parameters, such as specific impulse, efficiency, ratio of thrust and power and specific power, are acquired.
根据已有发动机结构的测试结论，对发动机的结构进行了相应的改进。
However both fo them were not too happy with performance in vertical plane due to lack of sufficient thrust.
双方都不太满意垂直方向的性能，因为缺乏足够的动力。
And once they cut interest rates, lower deposit reserve ratio of the stage, no different from that given the weak economy, the need to impose the policy thrust of the signal in such a background, there is hardly a natural performance of the stock market.
一旦他们降低利率，降低存款准备金率的阶段，没有，鉴于经济疲软的不同，需要强加在这样的背景下信号政策的重点，几乎没有一对股市的自然表现。
Parametric analysis of performance, such as:thrust, specific fuel consumption, energy efficiency...
提出了一个能简便准确地判断微型发动机顶层设计方案是否能产生推力的判别准则，并得出了高、中、低性能的三种气动热力参数顶层设计方案。
The relations of thrust and specific impulse to inlet air flow and temperature are derived from theoretical analysis of solid fuel ramjet performance.
在固体燃料冲压发动机性能分析基础上，推导了某发动机的推力和比冲与入口流量和温度之间的关系式。
Jet vane is a way of achieving thrust vector control. However, solid rocket motors in the wake of the jet vane work will inevitably cause a degree of thrust loss, this will lead to decline SRM performance and shorten missile range.
燃气舵是实现推力矢量控制的一种方式，但在固体火箭发动机尾流工作中的燃气舵不可避免的造成一定程度的推力损失，导致发动机性能下降和导弹射程减小。
Hence, it is necessary to consider performance and combustion stability together for optimization of a thrust chamber assembly.
因此，有必要考虑性能和燃烧稳定，共同为优化一个推力室大会。
The thermo elastic hydrodynamic lubrication performance of the thrust bearings with Babbitt layer and/or teflon layer of large hydrogenerators was investigated by means of finite element analysis.
以巴氏合金瓦和弹性金属塑料瓦推力轴承为例，介绍了大型水轮发电机推力轴承热弹性流体动力润滑性能的有限元分析方法。
As a result of these qualities, the eight-cylinder power unit provides maximum thrust and performance in virtually all driving situations.
由于这些品质，8缸动力单元的结果提供了几乎所有行驶条件下的最大推力和性能。
Through the measures of increasing towboat thrust, improving manoeuvre performance of towboats and reducing barges and load of a fleet etc.
采用增加推轮推力，改善推轮操纵性能和减驳减载等改进措施，可将两坝间河段的通航流量级由上水的2万立方公尺/s提高到4.5万立方公尺/s。
With improvements in suction performance, higher operating speeds and smaller bearings, an active balance piston was introduced to react the rotor thrust.
与改善在吸力的性能，较高的运行速度和规模较小的轴承，积极平衡活塞介绍了反应转子推力。
Within the divergent section of the nozzle extension, the combustion gas continues to expand with increasing velocity (10, 000 to 15, 000 ft/sec, two to three miles/sec, or three to four times the speed of a high-powered rifle bullet) until it is expelled at the desired nozzle area ratio and gas static pressure to maximize thrust chamber performance.
内部分歧的一段喷嘴延长，燃烧气体的不断扩大，日益增加的速度（ 10000一点五万英尺/秒，2时58英里/秒，或3至4倍的速度一高功率步枪子弹），直到是驱逐在理想的喷嘴面积比例和天然气的静压力，以最大限度地推力室的表现。
So in this paper, the micro-turbofan engine, which has several ten kilogram thrust level, moderate difficulty, low pressure ratio and single rotor, is studied in three ways which contain overall aerodynamics arrangement analysis and structure feasibility research, optimizing of aerothermodynamics circulation, overall aerodynamics design ane flying performance simulation.
本文对于数十公斤推力量级的、工程技术难度适中的、低增压比的一种单叶轮微型涡扇发动机，进行了总体气动布局分析和结构可行性研究，热力循环优化设计，总体气动设计及飞行特性模拟这三个方面的研究。
According to the actual application of operating experiment in the thrust bearing test board, the designed oil film thickness VXI measuring system shows better performance.
通过应用于推力轴承试验台的实测中，该油膜厚度VXI检测系统显示了良好的性能。
Since the adjustment of axial clearance of assembled turbodrill has great influence on its performance and service life, and the four-fulcrum thrust ball bearing pack has direct relation the axial clearance, a simulation of the axial distortion of the bearing is made by means of ANSYS software.
鉴于涡轮钻具装配时轴向间隙的调整对钻具性能和工作寿命有极大影响，而四支点推力球轴承组与轴向间隙有直接关系，为此选择求解精度较高的ANSYS软件对轴承组轴向变形进行仿真。
Research on aero gas turbine performance in the condition of fault based on thrust work potential
基于推力功势的航空燃气轮机故障性能研究