飞行器

Parabolic crafts with various geometry parameters are analyzed on this method. The calculated results show that the half open angle of craft affects the coupling coefficient of momentum.

计算结果显示飞行器获得的冲量耦合系数和飞行器的半张角有关，半张角相同的飞行器，焦距大的冲量耦合系数要大。

Based on point explosion theory , the approximate analytical formulas of momentum coupling coefficient and impulse of cone and parabolic crafts are deduced. The results show that the total axial impact momentum for parabolic craft is larger than that of cone craft and it increases with the increase of half open angle.

以LSD/LSC波理论为基础建立了一个近似的理论解析模型，推导出圆锥形和抛物形飞行器获得的冲量及冲量耦合系数的近似解析表达式，公式表明冲量耦合系数随着半张角的增加而增加，同时抛物形飞行器要比圆锥形飞行器的动量汇聚效果好。

Three axis optical tracking test table is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory.

摘要三轴光学跟踪试验转台是一种在实验室条件下复现飞行器或导弹在空中飞行姿态半实物仿真的有力工具，它和目标发生装置组合在一起模拟导弹跟踪目标的过程，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

ABSTRACT Three-axis flying posture simulator is a set of precise and sophisticated equipment with important significance of economy and national defence. TFPS is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory. TFPS, together with equipment producing infrared target, simulates the attacked target and flying missile, which can really simulate the various flying postures in space and dynamic characteristics. Thus, the performances of sensors, control system and actuator and so on can be tested and evaluated, which provides various reference bases for developing, improving and redesigning flying weapons.

三轴飞行姿态仿真转台是具有重大经济价值和国防战略意义的高精尖试验设备，它是在实验室条件下复现飞行器或导弹在空中飞行姿态的有力工具，它和红外目标发生装置组合在一起模拟袭击目标和飞行导弹，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

In this paper, the direct simulation Monte Carlo method is employed to simulate flows of modeled air vehicles having simple geometric shape such as delta wing at a Knudsen number between 0.001 and 0.1 for various Mach number and angle of attack conditions. With the calculated aerodynamic forces and heating, we obtained the general behavior of the rarefied gas effects on the vehicles' aerodynamics.

本文采用直接模拟 Monte Carlo 方法，模拟了简单外型如三角翼形的模型飞行器在努森数为 0.001到 0.1的范围内以不同来流马赫数和不同飞行攻角飞行时的流场，计算了飞行器所受到的气动力和气动热，获得了稀薄气体效应对飞行器气动性能影响的一般规律。

The calculating results show that the control efficiency is variant when mass moves in different ways in whole reentry flighting phase.

通过建立变质心再入飞行器的线性化方程，研究了质量块在飞行器内部不同方向上移动与可建立配平攻角之间的关系，并通过仿真计算可知再入飞行器再入的不同阶段质量块沿不同方向移动时的控制效率是有所差别的。

This paper studys the terrain following for low penetration aircraft ,and establishes the model of ALCM's clobber probability based on the Butterworth terrain model . It simulates much of the computation of its clobber probability under typical cruise conditions and analyzes those simulation results deeply. The control system is designed based on the lobber probability simulation result,and the reasonable control data are given.According to those research,the digital terrain following simulations are given .

文中研究飞行器低空突防的地形跟随问题，基于布特沃斯地形模型，建立了飞行器撞地概率仿真模型，在各典型巡航条件下进行了大量的撞地概率仿真计算，并对仿真结果进行了深入地统计分析和研究，在此基础上，设计了相应的控制系统并确定了合理的控制参数，对飞行器地形跟随进行了飞行仿真。

Huang Qu senior official yellow Jinlong and the incumbent black area senior official black must win, for the first echelon, will lead 2,000,000 starships, will go to nearby the solar system pluto orbit, will fight to the death with the planetoid; White area senior official white Peter with jumbles together, for the second echelon, leads 2,000,000 starships in Mars orbit area, completes the strategic reserves, and maintains and the first echelon of attack's inter-planetary communication traffic line; The surplus all starship, for the third echelon, will use in the Earth final defense, by alliance president the entire unification plenary powers direction, alliance president the entire unification will keep North Pole Headquarters, will be responsible for the entire campaign the coordinated duty, as well as will be responsible to manage Earth in all thunderbolts.

黄区长官黄金龙和新任黑区长官黑必胜，为第一梯队，将率领200万架星际飞行器，前往太阳系冥王星轨道附近，与小行星决一死战；白区长官白彼得与混为一谈，为第二梯队，率领200万架星际飞行器在火星轨道区，做好战略预备队，并维持与第一攻击梯队的星际交通运输线；剩余的所有星际飞行器，为第三梯队，将用于地球最后的防卫，由联盟主席全统一全权指挥，联盟主席全统一将留在北极总部，负责整个战役的协调任务，以及负责管理地球在此期间内一切突发事件。

In the modeling of flight simulation, a six-degree-of-freedom whole non-linear equation and wind-tunnel tests data of MAV are used, the propeller twist and induced air flow on MAV are took into account.

在飞行动力学和运动学仿真中，采用了六自由度全量非线性方程，以微型飞行器的风洞吹风实验数据为依据，考虑了螺旋桨的气动扭矩、陀螺力矩和尾流对微型飞行器的影响，精确地反映了微型飞行器的实际运动特性。

In some cases we may have to wait for better technology: early aircraft designers were mistaken to design aircraft that looked like birds, because they didn't have materials or power sources light enough the Wrights' engine weighed 152 lbs. and generated only 12 hp.

在有些情况下，我们不得不等待更好的技术出现：早期飞行器的设计者把飞行器设计成鸟儿的样子失败了，是因为他们没有足够轻巧的材料和足够强大的动力（莱特兄弟的引擎重达 153 磅，却只有 12 马力的输出），也没有精密的控制系统，能够让飞行器像鸟一样飞翔。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新