The present invention provides an unmanned aerial vehicle (100) comprising: a flight system (4) for producing thrust to manoeuvre the unmanned aerial vehicle (100). The flight system (4) comprises: one or more flight rotors (42) defining a plane passing through each flight rotor and a thrust direction generally perpendicular to the plane; and one or more electric motor (44) for driving the one or more flight rotors (42). The unmanned aerial vehicle (100) further comprises: a cargo area for coupling to or receiving a load (200); and a load system (6) for providing thrust additional to the thrust provided by the flight system (4) to thereby lift a load attached to the connection point. The load system (6) comprises: a first gas turbine propulsion system; and a controller configured to control the flight system (4) and load system (6).

An apparatus for generating thrust for air transport includes a main thrust device, and an auxiliary thrust device configured to generate auxiliary thrust so as to enable an aircraft to vertically take off and land. The apparatus further includes: wings fixed to left and right sides of a fuselage of the aircraft, rotors installed on the wings and configured to generate thrust. In particular, the main thrust device provides driving force to the rotors using motors and an engine, and the auxiliary thrust device is installed in the fuselage and has a center of gravity configured to coincide with a center of gravity of the aircraft.

A hybrid propulsion system with controllers and a drive shaft of a helicopter with a main rotor connected to a gearbox which can keep a flight attitude set by a pilot stable. It includes a pilot controller, a combustion engine and an electric motor, both of which act directly on the drive shaft. The VM is connected to a VM controller, and the EM is connected to an EM controller. One torque sensor and one tachometer are each arranged on the drive shaft, wherein during operation both the VM controller and the EM controller are able to receive values for the current speed and the current torque. Specified values for speed and torque, in which the VM can attain its optimum efficiency, are stored in memory and can be retrieved by the EM controller, wherein the first value can also be retrieved by the VM controller.

A ducted fan assembly includes a duct having an inlet, an inner surface, an expanding diffuser and an outlet. A fan disposed within the duct between the inlet and the expanding diffuser is configured to rotate about a fan axis to generate airflow. An active flow control system includes a plurality of injection zones circumferentially distributed about the inner surface. The expanding diffuser has a diffuser angle configured to create flow separation when the airflow is uninfluenced by the active flow control system such that the airflow has a thrust vector with a first direction that is substantially parallel to the fan axis. Injection of pressurized air from one of the injection zones asymmetrically reduces the flow separation between the airflow and the expanding diffuser downstream of that injection zone such that the thrust vector of the airflow has a second direction that is not parallel to the first direction.

A flying car that does not require complex transformation between a car and an aircraft, the flying car can quickly take off from a land, such as road or parking, and can land on the road or parking. The flying car is of triangular shape having a broad front and narrow rear. Three motorized members are coupled to three corners of a frame of the flying car. Each of the three motorized members includes a wheel assembly that includes a wheel and a wheel frame, an inner ring and an outer ring coupled to each other, and both mounted to the wheel frame. A fan mounted on the inner ring and one or more turbines mounted on the outer ring.

Aircraft having hybrid propulsion are disclosed. A disclosed example propulsion system for an aircraft. The propulsion system includes an engine, an electric motor, a first propeller mounted to an aerodynamic body of the aircraft, the first propeller driven by the engine, a second propeller mounted to the aerodynamic body and positioned outboard relative to the first propeller, the second propeller driven by the electric motor, and a selector to control whether the propulsion system is operated in a hybrid mode in which the first and second propellers are driven.

A hybrid axial/cross-flow fan aerial vehicle includes both axial and cross-flow fan propulsion for efficient hover and forward flight performance. The axial fans provide primarily vertical thrust, while the cross-flow fan provides horizontal, as well as vertical, thrust. The vehicle takes off vertically, is capable of hover, and can fly forward by vectoring the thrust of the cross-flow fan system. This approach provides large internal cargo capacity and high forward flight speeds.

A vehicle propulsion system comprises at least two motors. Combustion occurs upstream of a first motor, and a second motor is downstream of said first motor. The first motor is a turbine that drives a primary propulsion element to effect propulsion and a compressor to effect compression. The second motor is an expansion device whose incoming gases arrive from said first motor. The first motor and the second motor intercommunicate energy via electrical, electromagnetic, and/or mechanical means. Pressurized gases that result from said compression, combustion, or both are rendered or wastegated for auxiliary usage such as aerial thrust, vertical takeoff and/or vertical landing, near-vertical takeoff and/or near-vertical landing, pneumatic storage for hybrid drive, pneumatic lift and/or drive for towing and/or raising another vehicle, aerial vehicle steering, aerial vehicle pitch stabilization or manipulation, aerial vehicle roll stabilization or manipulation, and/or aerial vehicle yaw stabilization or manipulation.

Disclosed is a book recommendation method utilizing similarity between books. Provided according to one aspect of the present invention is the book recommendation method on the basis of similarity between books, including the steps of: (1) generating, by a book recommendation server, a story flow emotion graph for each of a plurality of books; (2) calculating, by the book recommendation server, similarity between a story flow emotion graph of a first book and a story flow emotion graph of a second book; and (3) outputting, by the book recommendation server, according to the similarity, at least one similar book similar to the first book.

A ducted fan assembly for generating thrust during edgewise forward flight. The ducted fan assembly includes a duct having an inlet with a leading portion and a diffuser with a trailing portion during the edgewise forward flight. A fan disposed within the duct is configured to rotate relative to the duct about a fan axis to generate an airflow through the duct from the inlet to the diffuser. An active flow control system includes a plurality of injectors including a first injector configured to inject pressurized air substantially tangential with the leading portion of the inlet and a second injector configured to inject pressurized air substantially tangential with the trailing portion of the diffuser such that when the injectors are injecting pressurized air, flow separation of the airflow at the leading portion of the inlet and the trailing portion of the diffuser is reduced.