Sato, Mitsuhide; Nirei, Masami; Yamanaka, Yuichiro; … - In: Energy reports 6 (2020) 2, pp. 439-446
In recent years, there has been an increase in motorization; therefore, the demand for high-efficiency motors in automobiles and aircrafts will further increase. A drone is an aircraft that flies without a human pilot onboard; it has a short flight time because the size of the mounted battery is...