Comprehensive optimization design and verification of electric propulsion system for high altitude UAV
The design of high-efficiency and high-reliability propulsion system is an important factor restricting the development of high altitude long endurance(HALE)UAVs.According to the overall design requirements of a high altitude UAV,an all-electric propulsion system composed of motor and propeller is optimized from the perspective of optimal comprehensive efficiency,and ground performance tests have been carried out to verify the performance indicators such as system dynamic characteristics,acceleration and deceleration response characteristics,and torque protection.Meanwhile,considering the inflow velocity,thrust,torque and power limitations,the motor operating limit speed boundary in different flight profiles is optimized and determined.The results show that the test tension is in good agreement with the numerical calculation value,and the total efficiency of the propulsion system reaches more than 65％,indicating that the comprehensive optimization method adopted has certain advantages in improving the efficiency and reliability of the electric propulsion system.
high altitude UAVelectric propulsion systemoptimal designdynamic characteristicssystem efficiencyexperimental research
万方数据
维普
