A helicopter tug apparatus for loading, transporting, and unloading a helicopter landing skid includes a plurality of landing skid loading units. The loading units are arranged to support the landing skid, and each of the loading units includes a skid cradle with a plurality of tug rollers configured to engage the landing skid. The loading units each include a drive track, and at least one motor for operating the skid cradle and the drive track. The rollers are reverse synchronized with the drive track, such that when the drive track moves the loading unit under the landing skid, the tug rollers turn in reverse to avoid placing lateral force on the landing skid.

The present invention relates to the auxiliary spare landing equipment for the aircraft to be used in the events of emergency landings. Each spare landing set consists of relatively small sized wheels; these sets are located at the bottom of the Aircraft, specifically in the centers of gravity on which the aircraft rests on the ground. The wheels are fully covered and concealed by airfoil casings to ensure efficient airflow and maintain optimal ratios during flights. The uniqueness of the present invention is in the casing of the gear which is designed in a manner of shatters and scatters upon impact with the ground while landing, whenever malfunction on the main landing system. In case of such malfunction, the aircraft initiates the landing process, resulting in casings to break upon hitting the runway, while the spare wheels appear and carry the aircraft.

The present invention relates to the auxiliary spare landing equipment for the aircraft to be used in the events of emergency landings. Each spare landing set consists of relatively small sized wheels; these sets are located at the bottom of the Aircraft, specifically in the centers of gravity on which the aircraft rests on the ground. The wheels are fully covered and concealed by airfoil casings to ensure efficient airflow and maintain optimal ratios during flights. The uniqueness of the present invention is in the casing of the gear which is designed in a manner of shatters and scatters upon impact with the ground while landing, whenever malfunction on the main landing system. In case of such malfunction, the aircraft initiates the landing process, resulting in casings to break upon hitting the runway, while the spare wheels appear and carry the aircraft.

Provided is a posture changing device for changing a posture of an aerosol container mounted on an unmanned aerial vehicle, the posture changing device including: a posture selecting unit for selecting a posture of the aerosol container from a plurality of candidate postures; and a posture changing unit for changing a posture of the aerosol container to the posture selected from the plurality of candidate postures. Also provided is a posture changing method for changing a posture of an aerosol container mounted on an unmanned aerial vehicle, the posture changing method including: selecting a posture of the aerosol container from a plurality of candidate postures; and changing a posture of the aerosol container to the posture selected from the plurality of candidate postures.

A manned or unmanned aircraft has a main body with a circular shape and a circular outer periphery. One or more rotor blades extend substantially horizontally outward from the main body at or about the circular outer periphery. In addition, one or more counter-rotation blades extend substantially horizontally outward from said main body at or about the circular outer periphery, but vertically offset from the main rotor blades.

A manned or unmanned aircraft has a main body with a circular shape and a circular outer periphery. One or more rotor blades extend substantially horizontally outward from the main body at or about the circular outer periphery. In addition, one or more counter-rotation blades extend substantially horizontally outward from said main body at or about the circular outer periphery, but vertically offset from the main rotor blades.

An aircraft having a fuselage and a front landing gear; both sides of the rear bottom of the fuselage are fixedly connected with the rear landing gear; one end of the front landing gear is rotatably connected to the front bottom of the fuselage. When the front landing gear rotates to the first position, the second position and the third position, the connecting line between the end of the front landing gear away from the fuselage and the end of the rear landing gear away from the fuselage intersects with the plane, where the fuselage is located, on the side close to the front of the fuselage, parallel to and intersect on the side close to the rear of the fuselage.

A system for landing an unmanned aerial vehicle has an unmanned aerial vehicle and a ground-based platform. A guide structure for receiving the unmanned aerial vehicle is mounted on the ground base platform. The guide structure has an inner diameter greater than a smallest outer diameter of the unmanned aerial vehicle landing gear and less than the largest outer diameter of the unmanned aerial vehicle landing gear.

A vertical takeoff and landing (VTOL) UAV having a UAV main body, two rear landing gears and two front landing gears; the two rear landing gears are fixedly connected to both sides of the rear bottom of the UAV main body, respectively; the two front landing gears are rotatably connected to both sides of the front bottom of the UAV main body, respectively. One end of the front landing gear away from the UAV main body is provided with a locating block. Rotating the front landing gear enables the locating block mounted on the front landing gear to get close to or away from the UAV main body.

A vertical takeoff and landing (VTOL) UAV having a UAV main body, two rear landing gears and two front landing gears; the two rear landing gears are fixedly connected to both sides of the rear bottom of the UAV main body, respectively; the two front landing gears are rotatably connected to both sides of the front bottom of the UAV main body, respectively. One end of the front landing gear away from the UAV main body is provided with a locating block. Rotating the front landing gear enables the locating block mounted on the front landing gear to get close to or away from the UAV main body.