A power supply system of an aircraft includes a fuel cell that generates electrical energy, a converter device including a mode switch device that supplies power to a first motor device through a first output terminal and switches a connection between an output node of the fuel cell and the first output terminal, a first battery device that supplies a voltage from a first battery to a second motor device through a second output terminal and connects the second output terminal with the first output terminal under control of the mode switch device, and a processor that controls the mode switch device to enter an emergency mode when detecting an error in the converter device or the first battery device and connects the first output terminal with the second output terminal.

There is provided a flight vehicle including: a wing unit; a battery that is arranged in the wing unit; an air intake unit that is formed at a position corresponding to the battery on a front side of the wing unit; a heat sink unit that is arranged for the battery and cools the battery by air which flows in from the air intake unit and that includes a ventilation unit having a shape widening from the front side toward a rear side; and an exhaust unit that is formed at a position corresponding to the battery on the rear side of the wing unit and that exhausts air which flows out from the heat sink unit.

There is provided a flight vehicle including: a wing unit; a battery that is arranged in the wing unit; an air intake unit that is formed at a position corresponding to the battery on a front side of the wing unit; a heat sink unit that is arranged for the battery and cools the battery by air which flows in from the air intake unit and that includes a ventilation unit having a shape widening from the front side toward a rear side; and an exhaust unit that is formed at a position corresponding to the battery on the rear side of the wing unit and that exhausts air which flows out from the heat sink unit.

A craft includes a hull, a wing, a hydrofoil, and a control system. The wing is configured to generate upwards aero lift as air flows past the wing to facilitate wing-borne flight of the craft. The hydrofoil is configured to generate upwards hydrofoil lift during a first mode of operation as water flows past the hydrofoil to facilitate hydrofoil-borne movement of the craft through the water. While the craft is hydrofoil-borne, the control system is configured to determine the upwards aero lift generated by the wing. The control system is further configured to control the hydrofoil to generate downwards hydrofoil lift to counteract the upwards aero lift generated by the wing that maintains the hydrofoil at least partially submerged in the water while the determined upwards aero lift is below a threshold lift.

A craft includes a hull, a wing, a hydrofoil, and a control system. The wing is configured to generate upwards aero lift as air flows past the wing to facilitate wing-borne flight of the craft. The hydrofoil is configured to generate upwards hydrofoil lift during a first mode of operation as water flows past the hydrofoil to facilitate hydrofoil-borne movement of the craft through the water. While the craft is hydrofoil-borne, the control system is configured to determine the upwards aero lift generated by the wing. The control system is further configured to control the hydrofoil to generate downwards hydrofoil lift to counteract the upwards aero lift generated by the wing that maintains the hydrofoil at least partially submerged in the water while the determined upwards aero lift is below a threshold lift.

Provided is a flight device that includes multiple drive sources and that can continuously fly even when one of the drive sources stops in flight, by using the other drive source. The flight device 10 includes a first drive system 11 and a second drive system 12. The first drive system 11 includes a battery 27, rotor 151 and the like configured to be rotated by energy supplied from the battery 27, and a first control unit 20 configured to control the numbers of revolutions of the rotor 151 and the like depending on a flight condition. The second drive system includes the battery 27, rotor 181 and the like configured to be rotated by energy supplied from the battery 27, and a second control unit 21 configured to control the numbers of revolutions of the rotor 181 and the like depending on the flight condition. In the emergency flight state, when the first drive system 11 stops, the flight device 10 lands by rotating the rotor 151 and the like, and when the second drive system 12 stops, the flight device 10 lands by rotating the rotor 181 and the like.

Provided is a flight device that includes multiple drive sources and that can continuously fly even when one of the drive sources stops in flight, by using the other drive source. The flight device 10 includes a first drive system 11 and a second drive system 12. The first drive system 11 includes a battery 27, rotor 151 and the like configured to be rotated by energy supplied from the battery 27, and a first control unit 20 configured to control the numbers of revolutions of the rotor 151 and the like depending on a flight condition. The second drive system includes the battery 27, rotor 181 and the like configured to be rotated by energy supplied from the battery 27, and a second control unit 21 configured to control the numbers of revolutions of the rotor 181 and the like depending on the flight condition. In the emergency flight state, when the first drive system 11 stops, the flight device 10 lands by rotating the rotor 151 and the like, and when the second drive system 12 stops, the flight device 10 lands by rotating the rotor 181 and the like.

A flying vehicle with a fuselage having a longitudinal axis, a cockpit extending substantially from the center of the fuselage, a left front wing extending from the fuselage, a right front wing extending from the fuselage, a left rear wing extending from the fuselage, a right rear wing extending from the fuselage. Each wing contains a rotor rotatably mounted and a direct drive brushless motor providing directional control of the vehicle. A centrally located ducted fan encompasses the cockpit and provides VTOL capabilities. The central location of the cockpit and central ducted fan aid in balance and stability. The central ducted fan is itself a brushless motor with the stator windings encapsulated in the ducted fan housing and rotor magnets within the fan. All motors and rotatable mounts are controlled by a fly-by-wire system integrated into a central computer with avionics allowing for autonomous flight.

An aerial vehicle adapted for vertical takeoff and landing using a set of wing mounted thrust producing elements and a set of tail mounted rotors for takeoff and landing. An aerial vehicle which is adapted to vertical takeoff with the rotors in a rotated, take-off attitude then transitions to a horizontal flight path, with the rotors rotated to a typical horizontal configuration. The aerial vehicle uses different configurations of its wing mounted rotors and propellers to reduce drag in all flight modes.

An aircraft propulsion system includes a fan, a primary powerplant, an augmenting powerplant and a controller. The primary powerplant is coupled to the fan and configured to rotate the fan during a first flight stage and during a second flight stage. The augmenting powerplant is coupleable with the fan. The controller is configured to cause the augmenting powerplant to drive the fan during the first flight stage, and to cause the augmenting powerplant to cease driving the fan based on an indication of a transition from the first flight stage to the second flight stage.