Disclosed herein is a VTOL tilt-wing aircraft that serves as a 4-6 passenger airliner for scheduled service between city centers and that is optimized for travel distances from 100-500 miles fully loaded with passengers and fuel. The VTOL aircraft solves technical, cost, and time problems inherent in other forms of transportation, including, but not limited to, rail, passenger airlines, and helicopters. The VTOL aircraft (1) takes off and lands like a helicopter, (2) flies fast like a jet, and (3) costs less than or comparable to a helicopter.

Vertical take-off, landing and horizontal straight flight of an aircraft includes activation a plurality of front and rear lifting in-ring propellers, each of which is connected to a respective independently operating electric motor. In addition, horizontal straight flight of the aircraft includes activation of additional left and right pushing in-ring propellers, each of which is connected to an independently operating electric motor. The front and rear lifting in-ring propellers are respectively positioned generally horizontally and symmetrically opposite to one another and equidistantly relative to a longitudinal axis of the aircraft. The right pushing in-ring propeller and the left pushing in-ring propeller are positioned generally vertically and symmetrically opposite to one another and equidistantly relative to the longitudinal axis of the aircraft.

Provided is an air-ground use vehicle capable of opening and closing a door, while a main wing is folded along a fuselage, without interfering with the main wing. The air-ground use vehicle includes: a main wing; a fuselage; a sliding door provided in a side surface of the fuselage; and a hinge mechanism that connects the main wing to the fuselage and that is capable of rotating between a first state, in which the main wing 4 is folded along the fuselage, and a second state, in which the main wing is opened to a side of the fuselage. In the first state, the sliding door opens and closes by sliding in a space formed between the main wing and the fuselage, with an outer surface of the fuselage and an inner surface of the sliding door facing each other.

Provided is an air-ground use vehicle capable of opening and closing a door, while a main wing is folded along a fuselage, without interfering with the main wing. The air-ground use vehicle includes: a main wing; a fuselage; a sliding door provided in a side surface of the fuselage; and a hinge mechanism that connects the main wing to the fuselage and that is capable of rotating between a first state, in which the main wing 4 is folded along the fuselage, and a second state, in which the main wing is opened to a side of the fuselage. In the first state, the sliding door opens and closes by sliding in a space formed between the main wing and the fuselage, with an outer surface of the fuselage and an inner surface of the sliding door facing each other.

Embodiments include an aircraft comprising a fuselage; a wing connected to the fuselage; and first and second propulsion systems connected to the wing on opposite sides of the fuselage, wherein at least a portion of each of the first and second propulsion systems and at least a portion of the wing are tiltable between a first position in which the aircraft is in a hover mode and a second position in which the aircraft is in a cruise mode, wherein each of the propulsion systems includes pylon and a rotor assembly comprising a plurality of rotor blades.

A vertical takeoff and landing aircraft is capable of vertical takeoff and landing and horizontal flight, and includes a cabin, rotors, protectors, a connector and a hinge. The cabin is capable of carrying a crew and/or a cargo. The rotors are positioned in front of and behind the cabin during the vertical takeoff and landing. The protectors surround the rotors. The connector connects the protectors to one another. The hinge attaches the connector to the cabin such that the connector is rotatable with respect to the cabin. The vertical takeoff and landing aircraft performs the vertical takeoff and landing and the horizontal flight by the connector rotating with respect to the cabin and accordingly the rotors and fixed wings rotating around the cabin.

A vertical takeoff and landing aircraft is capable of vertical takeoff and landing and horizontal flight, and includes a cabin, rotors, protectors, a connector and a hinge. The cabin is capable of carrying a crew and/or a cargo. The rotors are positioned in front of and behind the cabin during the vertical takeoff and landing. The protectors surround the rotors. The connector connects the protectors to one another. The hinge attaches the connector to the cabin such that the connector is rotatable with respect to the cabin. The vertical takeoff and landing aircraft performs the vertical takeoff and landing and the horizontal flight by the connector rotating with respect to the cabin and accordingly the rotors and fixed wings rotating around the cabin.

An improved aircraft design to harness advantages of vertical or short-takeoff and landings (V/STOL) and efficient horizontal flight. Configuration improves aircraft flight stability and efficiency in flight profiles: (1.) vertical flight; (2.) transition to and from horizontal flight and; (3.) horizontal flight on wings. The aircraft is capable of stable flight at any airspeed from hover to its maximum designed speed. It has the possibility of a controlled emergency landing using autorotation or, wings or, a combination of the two. Aircraft design includes: multiple thrust sources and, wings free to rotate on a spanwise axis. Wing rotation is independent—not coupled—with either the fuselage or, the thrust sources. Wing configurations include single, tandem or, multiple sets. Wings are coupled each other such that rotation induced in one wing affects rotation in all wings. Thrust sources are directed vertically during hover and some degree forward of vertical for horizontal flight. Thrust sources for vertical and horizontal flight can be the same rotors, such as in tilt-rotor configurations; or, divided between vertical flight rotors and horizontal flight rotors, such is in lift and cruise (a.k.a. lift and thrust) configurations.

An exemplary dual motor input includes a common shaft for coupling to a member to be rotationally driven, a first motor rotationally coupled to a first drive shaft, the first drive shaft coupled to the common shaft, and a second motor rotationally coupled to a second drive shaft, the second drive shaft coupled to the common shaft.

An exemplary dual motor input includes a common shaft for coupling to a member to be rotationally driven, a first motor rotationally coupled to a first drive shaft, the first drive shaft coupled to the common shaft, and a second motor rotationally coupled to a second drive shaft, the second drive shaft coupled to the common shaft.