The Beijing ZhongHangZhi (ZHZ) Technology Company displayed its TD220 unmanned helicopter for the first time at the recent Singapore airshow. The 300kg (661 lb) class coaxial twin-rotor vehicle can carry a 50kg (110 lb) payload at a cruising speed of 97 km/h (60mph) for up to six hours. Powered by a 65hp (48kW) piston engine, the TD220 is equipped with a HeliAP autopilot with redundant avionics and has completed more than 2,000 hours of flight testing.
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