Abstract: A VTOL aircraft (1) having a fuselage (2) for transporting passengers and/or load, front and rear wings (3, 4) attached to the fuselage, a right connecting beam (5a) and a left connecting beam (5b), which connecting beams structurally connect the front wing and the rear wing, and which connecting beams are spaced apart from the fuselage, and at least two lifting units (M1-M6) on each one of the connecting beams. The lifting units each include at least one propeller (6b) and at least one motor (6a) driving the propeller, preferably an electric motor, and are arranged with their respective propeller axis in an essentially vertical orientation. The front wing, at least in portions thereof, has a sweep angle ? between ?=45° and ?=135°, and the rear wing, at least in portions thereof, has a forward sweep with sweep angle ??30°.

Abstract: Herein is disclosed a power and data storage module comprising a mechanical interface, configured to mechanically connect the power and data storage module to an robot or a charging device; an electrical interface, configured to electrically connect the power and data storage module to the robot or the charging device; a battery, configured to supply an electrical charge to the robot or to store an electrical charge received from the charging device; a memory, configured to store data received via the electrical interface from the robot or the charging device, and to provide stored data via the electrical interface to the robot or the charging device; and one or more processors, configured to perform one or more battery management functions on the battery and one or more memory management functions on the memory.

Abstract: A ground station device for a plurality of unmanned aircraft, comprising an upper face, which comprises a plurality of receptacles for positioning a plurality of unmanned aircraft, a data interface for connecting the ground station device to a control unit, and a power supply device for charging the unmanned aircraft. The ground station device is designed to be stackable so as to form a stack with at least one other ground station device.

Abstract: Multi-stage reduction of impact forces are disclosed. An example apparatus to reduce impact energy of an aircraft during landing includes a rotatable landing leg having a proximal end near an axis of rotation and a distal end opposite the proximal end, a first flexible portion of the proximal end, where the first flexible portion is to engage a first engaging portion at a first rotation angle of the rotatable landing leg, and a second flexible portion of the distal end, where the second flexible portion is to engage a second engaging portion at a second rotation angle of the rotatable landing leg.

Abstract: Disclosed are devices, systems, and methods for pulmonary vein ostium and pulmonary vein prosthetic implants for creating a region of scar tissue (non-conductive) in or near one or more pulmonary veins and the superior venacava.

Abstract: Multi-stage reduction of impact forces are disclosed. An example apparatus to reduce impact energy of an aircraft during landing includes a rotatable landing leg having a proximal end near an axis of rotation and a distal end opposite the proximal end, a first flexible portion of the proximal end, where the first flexible portion is to engage a first engaging portion at a first rotation angle of the rotatable landing leg, and a second flexible portion of the distal end, where the second flexible portion is to engage a second engaging portion at a second rotation angle of the rotatable landing leg.

Abstract: Devices and methods are described for treating maladies such as atrial fibrillation. The devices and methods, in some implementations, include implant comprising a ribbon or other structure formed into a desired helical or other shape. The ribbon can provide mechanical pressure against an adjacent tissue, e.g., the tissue of a vessel, so as to help at least partially inhibit the propagation of electrical signals along the vessel.