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   weapon launching 在 航空航天科学与工程 分类中 的翻译结果: 查询用时:0.481秒
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weapon launching
相关语句
  武器发射
    Weaponized UAV,an important unmanned platform for airborne weapon launching
    武装无人机——一种重要的空中武器发射平台
短句来源
    The Research on Dynamic Testing of Recoil Caused by Weapon Launching during Helicopter Flighting
    直升机飞行状态下武器发射后座力动态测试研究
短句来源
    According to the requirement on the testing of recoil caused by weapon launching during helicopter flighting, this paper puts forward the dynamic measurement method based on the practical situation, and resolves the problem of recoil’s measurement of weapon launching during helicopter’s flight.
    本文根据直升机飞行中武器发射后坐力测量的需要,从实际情况出发,提出并设计了相应的动态测试方案,解决了在飞行状态下武器发射后座力的测量问题。
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In modern aircraft, airborne weapon launching often causes inlet temperature transients of an axial flow compressor. As a consequence, the compressor may be forced away from its steady operating point and, depending upon its dynamic response, eventually there may be a complete breakdown in the compressor flow, thus leading to surge. This paper presents the authors' research on the unsteady response of the compressor to the temperature transients and the effect of fuel flow reduction on engine stability...

In modern aircraft, airborne weapon launching often causes inlet temperature transients of an axial flow compressor. As a consequence, the compressor may be forced away from its steady operating point and, depending upon its dynamic response, eventually there may be a complete breakdown in the compressor flow, thus leading to surge. This paper presents the authors' research on the unsteady response of the compressor to the temperature transients and the effect of fuel flow reduction on engine stability when there is a sudden increase of engine inlet temperature. In recent years, some attempts have been made to simulate the unsteady response by using a mathematical model. Chamblee [5] presented a model in which the unsteady response is considered with steady state stage characteristics corrected. Das [6] described the unsteady response with a first order delay equation. In order to simulate the unsteady response more reasonably, the authors suggest a second order delay model combined with the "actuator-volume" model [7]. The unsteady response of the compressor to inlet temperature transients is then calculated, using the method of numerical integration. The calculated results are compared with test data and the calculated results supplied by other sources [4,10,11,12]. The comparison proves that the proposed models and calculation method are feasible. To the best of the authors' knowledge, there is no paper published on the effect of fuel flow reduction on engine stability. By way of analyzing the test curves of compressor surge caused by airborne weapon launching, the present paper proposes that the main reason of compressor surge is that the turbine nozzle row may be choked seriously during transient temperature rise at the engine inlet. Because fuel flow reduction can eliminate or reduce the degree of choke, it can play a role in preventing compressor surge. According to the above analyses, simulation calculations are carried out for different combinations of fuel flow reduction and temperature transients, using the second order delay model and the "actuator-volume" model. The calculated results are compared with the test curves from Ref. [1]. It is found the curve tendencies are consistent.

建立了压气机的激盘——容积模型及压气机对温度突升响应的二阶滞后模型。利用数值积分方法计算了温度突升对某涡喷发动机压气机稳定性的影响,并与发射武器的模拟试验结果及有关文献的计算结果进行了比较,证明了所用方法的可行性。对某涡喷发动机在不同温度突升和降油情况下的稳定性进行了模拟计算,确定出了降油量的大小对该发动机瞬态稳定工作边界的影响,计算结果与国外同类试验結果相比较,变化趋势是一致的。

Transfer alignment is a kind of alignment technique which use the main inertial units with higher accuracy to calibrate the slave strapdown inertial units. It's a key technique for the new generation of rapid reaction and motor launch weapons, which advances reaction speed and attack power of weapons launched afar from defence aera. This paper analyses the research status and development trend of transfer alignment for SINS, mainly discusses transfer alignment models in common use, and indicate...

Transfer alignment is a kind of alignment technique which use the main inertial units with higher accuracy to calibrate the slave strapdown inertial units. It's a key technique for the new generation of rapid reaction and motor launch weapons, which advances reaction speed and attack power of weapons launched afar from defence aera. This paper analyses the research status and development trend of transfer alignment for SINS, mainly discusses transfer alignment models in common use, and indicate the direction of farther research.

传递对准是指载体在航行时 ,载体上需要对准的子惯导系统利用高精度的主惯导系统信息进行初始对准的方法。传递对准是新一代快速反应、机动发射武器系统的关键技术 ,它的成功应用可以极大的提高武器系统的反应速度和防区外攻击能力。本文综合分析了国内外传递对准技术的现状及发展趋势 ,对常用的捷联惯性导航系统的传递对准模型进行了重点阐述 ,并指出进一步研究的方向

This paper presents the development of KUNLUN engine surge preventive control system.It describes the design method and the validity check criteria,which is used to evaluate the effectiveness of this system.The digital dual-redundancy controller satisfies the weapon launching requirement of a fighter with multi-kind missiles and cannon.Its anti-surge performance has been demonstrated successfully in the evaluation flight test throughout its flight envelope.

本防喘系统为某型歼击机研制,采用了数字式防喘控制器,能适应战斗机发射多种武器的要求,可按不同弹位、不同弹种和发射导弹时的不同飞行条件实现不同的控制规律。通过试验室物理模拟试验、火风洞温度畸变试验、地面和飞行台吞噬火药气体试验、高空台试验,优选了防喘控制规律,完成了全飞行包线的实弹考核飞行试验。研制过程中采用发动机进口热扰动参数和防喘系统有效性准则来评价防喘系统的工作能力,使研制工作逐步规范。

 
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