초미량 정밀살포용 무인헬리콥터의 SW05 로터 양력시험 = Paper : Off-Road Machinery System Engineering ; SW05 Rotor Lift of an Unmanned Helicopter for Precise ULV Aerial Application

다국어 초록 (Multilingual Abstract)

A small unmanned helicopter was suggested to replace the conventional spray system. Aerial application using an agricultural helicopter helps precise and timely spraying, and reduces labor intensity and environmental pollution. In this research, a rotor system (SW05) was developed and its lift capability was evaluated. Lift force for the dead weight of the helicopter was obtained at the grip pitch angle of 12°. As the pitch angle increased to 14° and 16°, the payload increased to 176 N and 216 N, respectively. Compared with SW04 airfoil performance in the total lift, the SW05 airfoil showed nearly the same capacity, but the payload of the SW05 was reduced because of the increased dead weight. A rated flight condition was defined as lifting mean payload of 294 N with the grip pitch angles of 16～17° at the rotor rotating speed of 850～950 rpm for the adjusted engine power. The fuel consumption would be 4.8～6.0 L/hr, and the air temperature of cooling fan should be kept below 160℃.