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vortex theory 原子渦動說。

vortical

The paper analyzes the characteristic of aerodynamics with structure of helicopter propeller blade , dissertrates vortex theory and the theory about gliding air field which produce the power of helicopter propeller blade . at the same time it also deduce the method of computing the induced velocity produced by helicopter propeller blade with vortex theory . at last , an influcence to the spreading of sound is discussed 并且將兩種定位算法進行了比較,說明了優劣;結合直升機的結構分析了旋翼的空氣動力特性,論述了直升機旋翼產生拉力的滑流理論和渦流理論,結合渦流理論論述了直升機旋翼流場誘導速度的計算方法,在此基礎上分析了直升機旋翼流場對聲音傳播的影響。

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 以軸向渦流理論為基礎,建立了適合于傾轉旋翼機氣動分析模型,以xv - 15傾轉旋翼機作為算例,通過結果的對比,表明本文的氣動模型能較好的分析傾轉旋翼機的氣動性能,并在氣動性能的基礎上分析了直徑變化對傾轉旋翼機氣動性能的影響。