This invention relates to, but not limited to helicopter, hoverbike or rotorcraft, and in particular it offers a multi-propeller arrangement which utilizes three or more propellers to fly the aircraft and hover in air where takeoff and landing space is a constraint. Skyhopter is a multi-rotor aircraft or rotorcraft constructed large enough to carry passengers and/or load. The present invention was developed so that it can be operated remotely using GPS navigation or flown by a pilot similar to a UAV or a drone. Unlike the prior art, the outboard propellers (5) are driven by electric motors and in addition, assisted by the Power Take Off (2) (e.g. flexible or solid drive shafts, pneumatic or hydraulic) coupled to an engine (1) whereby both separate transmission arrangements working in synchronization or independently provide the necessary torque and rotational speed to the propellers. There is an additional propeller (7) connected directly to the engine located under the fuselage to provide the required lift at take-off and for accelerating in flight using the flap and/or aileron (9). The unique wing shape of the fuselage allows the Skyhopter to maintain its upward lift and thrust during flight thereby putting less demand on the engine, the electric motors, the generator, strain on the PTO and no need for a large battery pack to store energy in order to fly long periods of time. In an emergency descend, a parachute (10) is deployed to land the Skyhopter with the load stored in the compartment under the fuselage is released. These makes the Skyhopter more stable, carry passenger/load, easier and safer to fly with or without a pilot compared to all other similar rotorcrafts or UAV. (2) Power Take OfT (PTO) (9) Flap/Aileron (10) Parachute (7) Propeller (1) Engine Additional views (10) Parac -XXX (4) Fuel t RAI (6) Rechargeable Cargo storage battery compartment
Skyhopter - piloted rotorcraft
2016-08-11
Patent
Electronic Resource
English
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