An adjustable foil having a suction surface and a pressure surface. The foil comprises an adjustable internal frame comprising a base, a plurality of articulately connected sections forming the suction surface of the foil, arranged consecutively from the leading edge of the foil to the trailing edge of the foil, and a plurality of frame struts, each articulately connected to the base and to a section of the plurality of sections. The foil is movable from a collapsed configuration to an expanded configuration by rotating the frame struts with respect to the base.

An aircraft with folding mechanism, the aircraft including a fuselage, optionally a payload and/or landing gear attached to the fuselage, at least two longitudinal beams attached to the fuselage that preferably extend parallel to each other and parallel to a first aircraft axis, with lifting units attached to each of the longitudinal beams. At least one crossbeam is attached to the fuselage, and preferably extending parallel to a second aircraft axis and at right angles with respect to the longitudinal beams, with lifting units attached to the crossbeam. The longitudinal beams are rotatably attached to the fuselage by at least one respective first pivot joint configured for pivoting the longitudinal beams around a respective first pivot axis to a pivoted position. The crossbeam is rotatably attached to the fuselage, preferably by at least one second pivot joint, for pivoting the crossbeam around a second pivot axis to a pivoted position.

A mass transportation system provides an airborne passenger vehicle tethered to a host vehicle. The host vehicle traverses along a fixed route. The airborne passenger vehicle moves between a stowed position fixedly secured to the host vehicle and a deployed position in which the airborne passenger vehicle is flying above the host vehicle.

A mass transportation system provides an airborne passenger vehicle tethered to a host vehicle. The host vehicle traverses along a fixed route. The airborne passenger vehicle moves between a stowed position fixedly secured to the host vehicle and a deployed position in which the airborne passenger vehicle is flying above the host vehicle.

The present invention relates to method of spraying a field with an unmanned aerial vehicle (UAV). The method comprises: flying an UAV over a crop within a field and spraying the crop with a liquid spray, wherein the UAV comprises a wing extending in directions perpendicular to a fore-aft axis of the UAV, wherein the wing has a span extending from one side of the fore-aft axis to the other side of the fore-aft axis, and wherein spraying the crop comprises spraying substantially all of the crop at a height of the wing above the crop that is less a length of the span of the wing.

The present invention relates to method of spraying a field with an unmanned aerial vehicle (UAV). The method comprises: flying an UAV over a crop within a field and spraying the crop with a liquid spray, wherein the UAV comprises a wing extending in directions perpendicular to a fore-aft axis of the UAV, wherein the wing has a span extending from one side of the fore-aft axis to the other side of the fore-aft axis, and wherein spraying the crop comprises spraying substantially all of the crop at a height of the wing above the crop that is less a length of the span of the wing.

A variable-sweep wing VTOL (vertical take-off and landing) aerial vehicle with distributed propulsion adapted for VTOL flight and horizontal flight includes a fuselage, a pair of symmetrical swiveling canards extending outward from forward portion of the fuselage, a pair of first symmetrical wings extending outward from the upper-rear portion of the fuselage and a pair of second symmetrical wings extending outward from the lower-rear portion of the fuselage. The first and second wings are spaced apart longitudinally and vertically. The pylon joins the first wing and second wing at the tip to from the box-wing. The wings can transition between VTOL mode or airplane mode. The wings are mounted with rotors for propulsion. Moreover, at the trailing edge of the wings, the blown flap work as blown lift system for both VTOL flight or STOL flight. Finally, the fuselage mounted pusher rotor provides propulsive thrust for horizontal flight.

A package delivery system uses unmanned aircraft operable to transition between thrust-borne lift in a VTOL configuration and wing-borne lift in a forward flight configuration. Each of the aircraft includes an airframe having at least one wing with a distributed thrust array coupled to the airframe. The distributed thrust array includes a plurality of propulsion assemblies configured to provide vertical thrust in the VTOL configuration and a plurality of propulsion assemblies configured to provide forward thrust in the forward flight configuration. A package delivery module is coupled to the airframe. A control system is operably associated with the distributed thrust array and the package delivery module. The control system is configured to individually control each of the propulsion assemblies and control package release operations of the package delivery module. The system includes a ground station configured to remotely communicate with the control systems of the aircraft during package delivery missions.

A package delivery system uses unmanned aircraft operable to transition between thrust-borne lift in a VTOL configuration and wing-borne lift in a forward flight configuration. Each of the aircraft includes an airframe having at least one wing with a distributed thrust array coupled to the airframe. The distributed thrust array includes a plurality of propulsion assemblies configured to provide vertical thrust in the VTOL configuration and a plurality of propulsion assemblies configured to provide forward thrust in the forward flight configuration. A package delivery module is coupled to the airframe. A control system is operably associated with the distributed thrust array and the package delivery module. The control system is configured to individually control each of the propulsion assemblies and control package release operations of the package delivery module. The system includes a ground station configured to remotely communicate with the control systems of the aircraft during package delivery missions.

The present invention relates to a hybrid VTOL jet car comprising a light weight floatable chassis adapted for carrying a payload, a retractable tail section attached to a light weight floatable chassis at rear end adapted for stabilizing the hybrid VTOL jet car, a plurality of wheels at the bottom of the hybrid VTOL jet car, a plurality of retractable wings on the sides of light weight floatable chassis, adapted for manoeuvring the hybrid VTOL jet car. Disclosed embodiments further comprising a plurality of thrust-producing engines adapted for generating the thrust required for driving the hybrid VTOL jet car on a surface as well as in the air and a plurality of parachutes attached to the hybrid VTOL jet car to safely land the hybrid VTOL jet car under emergency.