To solve the problem that the propulsion motor of the solar-powered aircraft is difficult to meet the high-torque-density requirement. the mass optimization method of a surface-mounted permanent magnet synchronous motor (SPMSM) based on a lightweight structure is proposed in this paper. According to the motor load generated by propeller. the strength and stiffness analytical models of... https://gxscbq95aqgw.timeblog.net/70682603/institutional-delivery-services-utilization-and-its-determinant-factors-among-women-who-gave-birth-in-the-past-24-months-in-southwest-ethiopia