| 摘要 |
PROBLEM TO BE SOLVED: To prevent the damage of a propeller, an airframe cover, an engine, and the like in the case of the crash of a radio controlled helicopter by disposing a shock absorbing device at a fuselage part of an airframe of a radio controlled helicopter spraying drug in the air. SOLUTION: An engine 3, a transmission 4, servo mechanism, a generator, 3 receiver, and the like are covered with an internal cover 12 fixedly provided at a frame 20, and an external cover 13 comprising two lateral covers is further mounted outside of the internal cover 12 to constitute a fuselage part of an airframe 1. Space is provided between the external cover 13 and the front-rear and right-left side faces and lower face of the internal cover 12, and air bag devices 14 are stored in the folded state. In case of emergency such as the crash of the airframe, powder is ignited to generate gas so as to inflate air bag bodies in an instant. Equipment such as the engine, vital parts constituting the airframe, can therefore be protected from crash impact, and a service life can be prolonged being saved from the damage of equipment.
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