Tip-jet UAV Unveiled by Unmanned Systems | Aviation International News

Tip-jet UAV Unveiled by Unmanned Systems

Swiss company Unmanned Systems is showing a model of its Orca rotary-wing unmanned air vehicle for the first time at the Dubai Air Show.

Unmanned Systems' Orca UAV employs a revolutionary tip-jet propulsion method that not only improves performance in many key areas, but also overcomes many of the operational problems encountered with conventional propulsion methods.

By David Donald • Contributor - UK

November 13, 2011

Swiss company Unmanned Systems is showing a model of its Orca rotary-wing unmanned air vehicle for the first time here at Dubai. The Orca employs a revolutionary tip-jet propulsion method that not only improves performance in many key areas, but also overcomes many of the operational problems encountered with conventional propulsion methods.

Orca’s system employs a turbine engine rated at 215 hp that rotates with the rotor blade. The jet blows air at 700-deg C through flexible ducts to the hollow rotor blades, then blowing through angled tip nozzles to provide thrust. Reactive movement is eliminated so there is no requirement for a tail rotor, and there is no need for clutch, gearbox or transmission, significantly reducing weight.

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