Abstract: 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.

Abstract: An interface (8) for attaching a tool or a payload (9) to an Unmanned Aerial Vehicle, UAV (1), the interface having, on a tool or payload side of the interface, at least one first connecting element (8a) for connecting a tool or payload to the interface on said tool or payload side thereof, and on a vehicle side of the interface, at least one second connecting element (8b) for connecting the interface to an UAV on the vehicle side thereof. At least one sensor unit (8c) configured to measure at least one physical property of the tool or payload, when it is connected to the interface, and at least one control unit (8d) in operative connection with the at least one sensor unit. The control unit is configured to communicate with a flight control unit (6) of the UAV for providing it with data related to the measured at least one physical property.