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首页> 外文期刊>Journal of the American Helicopter Society >Performance Comparison of Quadcopters with Variable-RPM and Variable-Pitch Rotors
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Performance Comparison of Quadcopters with Variable-RPM and Variable-Pitch Rotors

机译：具有可变RPM和可变螺距旋翼的Quadcopters性能比较

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摘要

Use of variable-pitch rotors was compared against variable-RPM rotors on a 2-kg (20 N) quadcopter in simulation. To generate 5 N of thrust in hover while maintaining a 2: 1 maximum thrust-to-weight ratio, the variable-pitch rotor required 29% more power. At lowclimb rates the variable-RPM rotor requires less power, but near itsmaximum rate it requiredmore power than the variable-pitch rotor. The maximum climb rate for the variable-pitch rotor was up to 70% greater than that of the variable-RPM rotor. A quadcopter equipped with variable-pitch rotors requiredmore power to operate compared to the aircraft with variable-RPM rotors over its operational airspeed range. The variable-pitch quadcopter required 30% more power at best-endurance speed and had 18% less range than the variable-RPM quadcopter (at maximum-range speed). The 1/rev root drag shear was 42% larger for the variable-RPM rotor, and the 2/rev H-and Y-forces were 37% and 50% larger. The 2/rev thrust vibration was 6.5% smaller for the variable-RPM rotor, and the hub pitching and rolling moments were 11% and 9% smaller, respectively. Unlike the quadcopter equipped with variable-pitch rotors, the quadcopter equipped with variable-RPM rotors experienced a beating phenomenon in the aircraft-level vibratory loads.
机译：在仿真中，比较了2千克（20 N）四轴飞行器上可变螺距转子与可变RPM转子的使用。为了在悬停时产生5 N的推力，同时保持最大推力重量比为2：1，可变螺距转子需要多29％的功率。在低爬升速率下，可变RPM转子需要的功率较小，但在接近最大爬升速率时，它比可变螺距转子需要的功率更大。可变螺距转子的最大爬升率比可变RPM转子大70％。与具有可变RPM旋翼的飞机相比，配备有可变螺距旋翼的四轴飞行器在其工作空速范围内需要更大的动力才能运行。在最佳续航速度下，可变螺距四轴飞行器需要30％的功率，而在最大射程速度下，可变螺距四轴飞行器的射程要小18％。对于RPM可变转子，1 / rev根阻力剪切力增大42％，而2 / re H和Y力分别增大37％和50％。可变RPM转子的2 / rev推力振动小6.5％，轮毂俯仰和侧倾力矩分别小11％和9％。与配备可变螺距旋翼的四轴飞行器不同，配备可变RPM旋翼的四轴飞行器在飞机级振动负载中出现跳动现象。

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