TYPE: Lifting vehicle.
PROGRAMME: Announced April 2000; CityHawk prototype/demonstrator completed and undergoing tethered testing since August 2002. Engines had been run at 80 per cent power by September 2002, achieving lift-off of rear duct.
CURRENT VERSIONS: CityHawk: POC demonstrator; as described.
X-Hawk and TurboHawk: Civil and military derivatives; described separately.
DESIGN FEATURES: Two-seat extrapolation of Hummingbird concept; T-O/landing area compatible with typical urban parking spaces and garages; significantly quieter than a helicopter due to ducted fan design. Foreseen applications include personal urban transportation, police and traffic patrol, ambulance and urban evacuation, air taxi, and agricultural/environmental monitoring.
FLYING CONTROLS: Manual, from left-hand seat. Differential thrust between fans for pitch and forward speed control; combined thrust of both fans controls vertical speed (rise/descent). Roll and yaw control by cascades of vanes on upper and lower surfaces of each fan.
STRUCTURE: Fans, engines and gearboxes identical with those of Hummingbird.
LANDING GEAR: Tricycle type.
POWER PLANT: Two Hummingbird-type fans, each driven by four 16.4 kW (22 hp) Hirth F33-15A single-cylinder piston engines. Engine redundancy allows vehicle to fly down to a landing even if each fan loses one engine. Fuel capacity 60 litres (15.9 US gallons; 13.2 Imp gallons).
ACCOMMODATION: Side-by-side cockpits for two persons under separate canopies.
EQUIPMENT: Ballistic parachute for emergency recovery.