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前言无负荷转速是叶片式气动发动机的重要性能参数之一,目前见到的计算公式为; n_0=(18500)/(r~(2/3))K_1K_2 (1) 是经验公式,看不出影响无负荷转速大小的因素。本文分析了叶片对中的中、小型叶片式气动发动机转子及叶片的运动情况,从驱动力矩与摩擦力矩平衡的观点,定性地分析了影响无负荷转速的诸因素。然后,经过实验修正得出无负荷转速的近似计算公式,最后将计算结果与试验结果进行了比较。一、有关无负荷转速的概念我们研究的对象是由转子、叶片、气缸及前后盖和轴承等组成的单独的发动机,这样
Preface No-load speed is one of the important performance parameters of the blade-type aero-engine. At present, the calculation formula is: n_0 = (18500) / (r ~ (2/3)) K_1K_2 Factors affecting the size of no-load speed. In this paper, the motion of rotor blades and vanes of medium and small vane aerodynamic engines are analyzed. From the viewpoint of the balance of driving torque and friction torque, the factors affecting the no-load speed are analyzed qualitatively. After that, the approximate formula of no-load speed is obtained through the experimental amendment. Finally, the calculation results are compared with the test results. First, the concept of no-load speed Our object of study is a rotor, blades, cylinders and front and rear covers and bearings and other components of a separate engine, so