Technic specification for blimp of 12m 1. size length: 13m diameter: 3.2m volume of blimp balloon: 72 m3  2. weight blimp balloon: 30kg engine room: 32kg empennage: 5kg gross weight:67kg available load: 10kg-15kg 3. capability maximal speed: 70km/h minimal speed: 0-5km/h sustaining flying time:2.5h resistance of wind: below 5 grade the best hight of flying for sight:30m-150m minimal diamater for turning around: 0m-2m distance of flying-off/landing:0m-2m 4. standard equipment Remote-control unit(made in Japan): futaba (made in Japan)   9CH of controlling system Rudder equipment: Hitec-HSR/5995TG 1 piece Thunder iger-188 9pieces Equipment of power: ZENOAH G620PU (2 pieces) made in Japan  Airscrew: 21*10 nylon screw (2 pieces) Motor for turning around: RS-550S (1 group) Airscrew: 8*4 nylon screw (1 pieces) Empennage: made of compound material of fiberglas (4 groups) Batteries for power: 6V3200MAH nickel/ hydrogen (1 group) Batteries for receiving: 6V---3200MAH nickel/ hydrogen (1 group) Engine room: made of compound material of fiberglas  with landing gear and moorage cord (1 group) 5. Safety device Auto equipment of blimp balloon deflating when the blimp is out of control (1 group)