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flight vehicle
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  飞行器
     Compared with traditional design optimization method,MDO method can gain the optimum design for flight vehicle as well as the optimum thrust-time curves of booster.
     与传统设计优化方法相比,MDO方法一次设计优化就可得到满足飞行器总体设计指标的最优设计,得到内外弹道相匹配的助推器最优推力-时间曲线。
短句来源
     Research on Terrain Modeling in Virtual Scene and the Simple Control of Flight Vehicle
     虚拟场景地形建模研究及飞行器简单控制
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     STORAGE AND TEST SYSTEM RELIABILITY ANALYSIS OF THE FLIGHT VEHICLE DYNAMIC DATA
     飞行器动态数据存储测试系统的可靠性分析
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     ARTIFICIAL INTELLIGENCE ANALYSIS AND DIAGNOSIS OF FLIGHT VEHICLE VIBRATION
     飞行器振动智能分析与诊断
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     Comparison of design optimization methods for flight vehicle solid rocket booster
     飞行器固体火箭助推器设计优化方法比较
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  “flight vehicle”译为未确定词的双语例句
     For it's excellent performance, Rocket-Based-Combined-Cycle (RBCC) should be the most competitive propulsion system of Hypersonic Flight Vehicle for martial and civil purpose.
     火箭基组合循环(Rocket-Based-Combined-Cycle,RBCC)发动机具有优越的全弹道性能,是实现高超声速飞行的最有潜力的动力方案,具有广泛的军事和民用航天应用前景。
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     Investigations on the Self-healing Technique for Control Software of Unmanned Flight Vehicle
     无人机飞行控制软件的自修复技术研究
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     Design and application of airborne digital map in the flight vehicle low altitude penetration
     航迹规划中数字地图的设计与应用
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     Theresults have an important meaning on nonlinear model of flight vehicle.
     分析结果对非线性模型同样具有重要意义.
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     The flowfield around a hemisp here and a flatnosed cylinder in the shock tube is simulated numerically by using nonequilibrium NavierStokes equations with a n air chemical model of 5 species 17 reactions, and the catalytic rate constant of surface materials such as Pt, SiO2, Ni and a flight vehicle materials is de termined by using the heat transfer rate of testing in the shock tube and the di stribution of heat transfer rate along with the catalytic rate constants.
     用5组分17个化学反应DunnKang空气化学模型和轴对称热化学非平衡NavierStokes方程,对激波管中球头和平头圆柱模型绕流流场进行了数值模拟,给出了驻点热流随催化速率常数变化的分布,并根据激波管实验测量的热流值确定了表面材料Pt、SiO2、Ni和某种飞船材料的催化速率常数,建立了数值分析高焓流动边界层催化特性的软件。
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  相似匹配句对
     MACHANISM RELIABILITY OF FLIGHT VEHICLE
     飞行器机构可靠性
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     Reusable space vehicle flight control
     可重复使用空间飞行器的飞行控制
短句来源
     Flight to Mercury
     飞向水星
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     The Flight of Youth
     飞逝的青春
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     In-Vehicle Networks
     汽车网络技术
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  flight vehicle
The asymptotic technical stability conditions for the nonlinear controllable motion of an elongated elastic flight vehicle are formulated.
      
Asymptotic Technical Stability in Measure of the Nonlinear Controllable Motion of an Elastic Flight Vehicle
      
Influence of vibrocavitation on physicochemical properties of fuel in flight vehicle systems
      
Most of these demand a high-fidelity aerodynamic database representing the flight vehicle.
      
Numerical and experimental techniques are used to model the flow and pressure distribution around the forebody of the HYFLEX hypersonic flight vehicle.
      
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Since the action of actuators on flexible flight vehicles is an important exciting source to elastic vibration, it is of practical significance to choose appropriate positions for actuators as well as for sensors. We shall in this paper study optimal positions of rate gyros and elevators that are modelled as lumped operating elements, Through the feedback control, a term (B1 GH1)q is introduced to the system to count for the damping force, where B1 is a control matrix, relying on the actuator locations,...

Since the action of actuators on flexible flight vehicles is an important exciting source to elastic vibration, it is of practical significance to choose appropriate positions for actuators as well as for sensors. We shall in this paper study optimal positions of rate gyros and elevators that are modelled as lumped operating elements, Through the feedback control, a term (B1 GH1)q is introduced to the system to count for the damping force, where B1 is a control matrix, relying on the actuator locations, and H1 is a measurment matrix depending on the gyro locations. An effective damping matrix Da is defined in ( 5 ),and then Rayleigh' s dissipation function can be obtained as F=1/2qrDcq.In order to make the system having most damping effect to vibration, the actuators and sensors are so positioned that the effective damping force (aF/eq) could be maximized.Because of its real symmetry, Dc can always be diagonalized. In accor-dance, suppose that , the elastic motion willbe decelerated by force bkqk, if bk< 0 , the motion will be decelerated by force bkqk, if bk< 0 , the motion will be accelerated. That is, the forcesderived from F may be either dissipating or accelerating. Whenit is thought that the dissipating force is leading to the accelerating one.Since the trace of a matrix will not be changed by a normal transfor-mation, we have . Then a new performance index is defined by (12). The problem under consideration is to determine the positions of actuators and sensors so that index (12) is maximized.In general, the same results can be obtained from Lagrange's dynamic equations.A simple condition has been studied. Through analysis, we have derived a set of simple and practical formulae (7) and (8) that give the very positions at which the effective damping force is always dissipating. By applying formulae ( 7 ) and ( 8 ) to a given missile, it is shown that the present position of the elevator is suboptimal and is 0.06m away from the optimal position.

本文研究了弹性飞行器操纵机构最优位置的确定。在具有速率反馈的控制系统中,把控制作用看作等效阻尼,推导了由气动弹性效应所决定的舵面最优位置准则,给出了表征舵面位置与陀螺位置协调关系的公式。附有实例验证。

Dryden model is Usually used in studying the response of flight vehicle to atmospheric turbulence. For a modern flight simulator, it is necessary to generate random winds(in Dryden model or sometimes others) with a digital computer. In this paper, a theoretically stricted new method to meet this purpose is proposed. By this method, we can acquire a three-dimensional atmospheric turbulence which contains three components of wind velocity and three components of wind velocity gradient. The reliability...

Dryden model is Usually used in studying the response of flight vehicle to atmospheric turbulence. For a modern flight simulator, it is necessary to generate random winds(in Dryden model or sometimes others) with a digital computer. In this paper, a theoretically stricted new method to meet this purpose is proposed. By this method, we can acquire a three-dimensional atmospheric turbulence which contains three components of wind velocity and three components of wind velocity gradient. The reliability of this method is checked by comparing with the autocorrelation value obtained from the theoretical autocorrelation value. A numerical example has shown a satifactpry result. Finally, some proposals about how to use this mathematical model in flight simulator are given.

本文为如何利用电子计算机产生符合Dryden模型的三维大气紊流信号(包括三个速度分量和三个角速度分量)提出了一个比较严格和完整的方法。所得结果的可靠性可以通过相关函数来检验。最后还对飞行模拟器中如何使用这一数学模型提出了一些看法。

The present paper reviewed briefly some developmest courses of solid mechanics and showed the close relationship between the development of . solid mechanics and its applications to engineerings. The Flight Vehicle Strength, as an application of solid mechanics to aeronautical and mis sile structures, is discussed. Particularly, discussions on some important aspects of the Flight Vehicle Strength much as the Mechanics of Composite Materials, Computational Mechanics, Active Suppression on Flutter,...

The present paper reviewed briefly some developmest courses of solid mechanics and showed the close relationship between the development of . solid mechanics and its applications to engineerings. The Flight Vehicle Strength, as an application of solid mechanics to aeronautical and mis sile structures, is discussed. Particularly, discussions on some important aspects of the Flight Vehicle Strength much as the Mechanics of Composite Materials, Computational Mechanics, Active Suppression on Flutter, Safety and Reliability of Structures, and Fatigue and Fracture, are given. The present paper aims at the investigation and study of the state-of-the-art of branches described about and trying to predict the possible research trends.

本文简单回顾了固体力学发展的几个历程,说明固体力学的发展与工程应用之间的密切联系,从而介绍了它的一个应用分支——飞行器强度学,并着重讨论了其中的几个重要侧面,如复合材料力学,计算(结构)力学,结构的可靠性分析,疲劳与断裂力学,以及颤振主动抑制等。本文目的在于探索某些可能的研究方向。

 
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