Hummingbird line of VTOL unmanned aerial systems to make debut: Three Hummingbird vertical takeoff and landing unmanned aerial systems are being introduced by Reference Technologies, the company reports.
The Model 1 Hummingbird is a battery powered aircraft with a medium flight duration and light payload capacity. Model II, a long flight duration and high payload aircraft, uses a gas-powered electrical system to power to six external rotors surrounding a 19-inch electrically powered central ducted fan with two counter rotating fans.
The Model III is an enhanced version of the Model I with eight external rotors in conjunction with a 24" central ducted fan providing extended flight duration and payload capacity, Reference Technologies said.
