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tilt rotor 斜旋翼飛機。

tilt yard

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 變直徑傾轉旋翼能有效的改善傾轉旋翼機懸停和巡航狀態下的氣動效率,本文提出了變直徑傾轉旋翼試驗模型設計方案,完成了可變直徑傾轉旋翼的結構設計,并利用虛擬樣機技術對變直徑傾轉旋翼的運動特性、結構動力學特性以及結構強度進行了分析、研究。

A mathematical model reflecting the tilt rotor unsteady and nonlinear aerodynamic characteristics in the longitudinal channel is presented in the paper . in the full flight envelope , the rotor thrust continues tilting and the aerodynamic forces of each component change as a function of airspeed and nacelle angle 在整個飛行包線內,旋翼的推力矢量方向不斷變化,飛機各部件的氣動力隨發動機短艙傾角和空速的變化而變化,因而飛機的飛行動力學有很強的非定常、非線性特性。

The model developed here is suitable for the tilt rotor aircraft during hover , transition and cruise . the longitudinal equations of motion provide a foundation for further investigation on tilt - rotor flight dynamics 文中所建模型具有較高精度,適合于飛行包線內的所有模式,為傾轉旋翼飛機飛行動力學的進一步研究提供了基礎。

When the tilt rotor vehicle is in hover , the aerodynamic download of the rotor flowfield imposes on the wing . in this time , the rotor / wing interaction is severe 傾轉旋翼飛行器懸停時,旋翼的下洗流剛好作用在機翼上,此時,旋翼機翼間的氣動干擾非常劇烈。

Thus the flight dynamic characteristics and control features in the conversion mode are the key technologies in the whole tilt rotor design 過渡模式飛機的氣動布局改變主要體現在縱向平面內,所以本文主要研究過渡模式下飛機縱向通道的動力學特性和控制系統設計。

A simulation of the guidance scheme applied to the example tilt rotor vehicle exhibits satisfactory behavior in the presence of wind and initial errors 仿真結果表明,在初始擾動和有風作用下,垂直距離偏差均達到很小。

The rotor / wing aerodynamic interactions of the tilt rotor vehicle in hover is described in this dissertation 本文主要研究的是傾轉旋翼飛行器懸停狀態時,旋翼機翼之間的氣動干擾問題。