Aerodynamic performance and efficiency synchronous measurement device and method for electric propeller system

Abstract

The invention provides an aerodynamic performance and efficiency synchronous measurement device and method for an electric propeller system. An electromotor, a torque rotating speed meter and a cantilever beam tension sensor of the device are fixed to a base, one end of the torque rotating speed meter is sequentially connected with a first transmission shaft, a torque transmission sliding sleeve and a second transmission shaft, and an air propeller is fixed to the second transmission shaft and located at the upstream of the incoming flow direction of a wind tunnel test section; a baffle ring sleeve is fixed to the second transmission shaft and used for limiting the cantilever beam tension sensor; the other end of the torque rotating speed meter is fixedly connected with the electromotor; afrequency converter is connected between the electromotor and a power meter; and the data output end of the torque rotating speed meter, the data output end of the power meter and the data output endof the cantilever beam tension sensor are connected with a computer. The method comprises the steps that the air propeller is driven by the electromotor to rotate at a set air speed; the tension, theshaft torque and the rotating speed of the air propeller and the output power of the electromotor are measured, and measured data is transmitted to the computer for calculation to obtain the aerodynamic performance of the air propeller, the electromotor efficiency and the electric propeller system efficiency.

Description

technical field [0001] The invention belongs to the technical field of testing the aerodynamic performance and efficiency of an aviation electric propeller system, and in particular relates to a device and method for synchronously measuring the aerodynamic performance and efficiency of an electric propeller system. Background technique [0002] Propeller aircraft is an aircraft that uses an air propeller as a power system. It has good low-speed and take-off and landing characteristics, and still occupies an important position in modern air transportation. The traditional propeller system uses internal combustion engine power, which has disadvantages such as poor safety and reliability, complex structure, and high noise. However, the propeller system powered by electric motors has the advantages of energy saving, environmental protection, high efficiency, low consumption, and good comfort. Now it has become an electric aircraft. preferred powertrain. [0003] The electric pr...

AI Technical Summary

Problems solved by technology

Although the efficiency of the electric propeller system can be estimated by the aerodynamic performance of the propeller and the efficiency of the motor, it cannot be used to accurately evaluate whether the propeller and the motor match. In addition, the experimental environment and test equipment of the two experiments are different, and there will inevitably be equipment errors and Random error

Since the experiment must be carried out independently twice, the cost of the experiment is increased and the efficiency is reduced

Therefore, it is not rigorous to evaluate the efficiency of the electric propeller system only by the aerodynamic performance of the propeller and the efficiency of the electric motor

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