Numerical simulations demonstrate that the multi body analytical model can analyze the aeroelastic stability of the tiltrotor aircraft in the helicopter mode 数值计算表明：建立的多体动力学模型能够快速分析直升机模式下倾转旋翼机复杂的旋翼机翼气弹耦合动力学特性。
Multi body dynamic differential equations are combined with the equations of the unsteady dynamic inflow model to establish the complete unsteadily aeroelastic coupling analytical model of the tiltrotor 结合动力人流，研究了直升机模式下倾转旋翼机非线性非定常气弹耦合动力学特性。
The pilot held a current airline transport pilot s licence ( helicopters and gyroplanes ) and a valid class one medical certificate . he had 3 , 900 hours of operating experience 肇事直升机的飞行员具备有效的航空运输飞行员执照（直升机和自转旋翼机）和一级体检合格证明书，并拥有3 , 900小时的飞行经验。
Fixed - wing attack types share some similarities with their rotary - wing counterparts , but due to the speed at which the aircraft moves and the differences of fw compared to rw aircraft , they are distinctly different attack types that must be mastered separately 固定翼飞机的部分攻击方式与旋翼机相似，但由于其飞行速度与旋翼机不同，另外个别的攻击方式明显不同并且高明许多。
In chapter 5 , a new dynamic wake model is developed by employing the rotor free - wake method in chapter 2 , and is used to investigate the curve distortion during the conversion of tiltrotor aircraft between helicopter flight conditions and airplane flight conditions 在第二章方法的基础上，第五章建立一个倾转旋翼动态尾迹模型，使用该模型对倾转旋翼机倾转过渡状态的尾迹弯曲变形进行了研究，得出了一些结论。
Breakthroughs in modern gyroplane technology - an introduction to the advances in gyroplane technology and the emerging market opportunities for a new generation of gyroplanes ranging from small vtol & ustol gyroplanes to large vtol gyrodyne airliners or freighters with 20 ton payload capacity 现代旋翼机科技的突破-介绍旋科技的进步,以及新一代旋翼机的市场机会,从小型超短距离升降和垂直升降的旋翼机到可垂直升降,载重20吨以上的大型直升旋翼客机和货运机
Make use of the commercial software to built the virtual prototyping , and the kinetic and dynamic behaviors of the tilt - rotor have been systematically simulated and studied . the main research include as follows : the virtual prototyping model has been built , and on the platform of adams the dynamic property of virtual prototyping of v - 22 1 / 5 scale model ’ s rotor and wing system have been simulated and studied , according to the compared result to show the feasibility to analyze the tilt - rotor with the technology of virtual prototyping 本文的主要研究内容有:建立了多体系统动力学虚拟样机模型,在adams软件平台下对其旋翼/机翼系统的结构动力学特性进行仿真分析,并以v22倾转旋翼机1 / 5缩比模型为例进行对比分析,结果表明本文所建立的多体动力学模型能够应用于倾转旋翼机的运动学和结构动力学分析、研究。
Rotary - wing gunner : the helo gunner helps to navigate prior to combat , and once in combat , he scans for and engages the enemy while communicating his needs to the pilot ( ie that he needs to approach a target from a certain direction , or that he wants to employ specific armaments that require special delivery flight ) 旋翼机炮手：直升机炮手有助于战斗中的导航，一旦进入战斗，他便向飞行员通报其搜索和交战的需要，例如他需要一条确切的路线接近目标，或使用某种武器时需要特殊的飞行姿态。
On the basis of axial vortex theory , the aerodynamic performance of tilt - rotor model has been built , and using it to analyze the aerodynamic performance of xv - 15 , comparing to the actual data to prove the model ’ s validity , finally studied the variety of aerodynamic performance relative to the variable rotor diameter 以轴向涡流理论为基础,建立了适合于倾转旋翼机气动分析模型,以xv - 15倾转旋翼机作为算例,通过结果的对比,表明本文的气动模型能较好的分析倾转旋翼机的气动性能,并在气动性能的基础上分析了直径变化对倾转旋翼机气动性能的影响。
Variable diameter rotor is an effective method to improve the aerodynamic performance of tilt - rotor in both hover and cruise state . on the basis the research before , the variable diameter tilt rotor structure design has been finish , and in virtue of the technology of virtual prototyping to simulate and analyze the kinetic , dynamic and intensity property of it 变直径倾转旋翼能有效的改善倾转旋翼机悬停和巡航状态下的气动效率,本文提出了变直径倾转旋翼试验模型设计方案,完成了可变直径倾转旋翼的结构设计,并利用虚拟样机技术对变直径倾转旋翼的运动特性、结构动力学特性以及结构强度进行了分析、研究。
