An aircraft includes a central wing accommodating passengers and/or freight and two lateral wings that pivot on the central wing about respective axes of rotation. The various wings obey the following geometric characteristics: 0.3×Long<L.sub.arg<L.sub.ong, 0.11×L.sub.ong<H.sub.aut<0.25×L.sub.ong, E.sub.nv>1.4×L.sub.ong, wherein L.sub.arg being the distance between the two axes, L.sub.ong being the length of the central wing, H.sub.aut being the height of the central wing, E.sub.nv being the wingspan of the aircraft. The axes of rotation are inclined by an angle relative to the vertical axis of the aircraft such that the lateral pivot from rear to front and vice versa so as to come closer to, or deploy on either side from, the fuselage.

A multi-axis amphibious copter for flying and cruising at high speeds. The multi-axis amphibious copter includes six propulsion points i.e., four propellors oriented vertically, a coaxial rotor oriented vertically, and a mini turbine thruster on the rear of the aircraft body and configured to propel the multi-axis amphibious copter forward. The multi-axis amphibious copter can land and take off vertically from congested places and can fly at cruising speeds.

Provided is a taxiing system for steering an amphibious aircraft on a body of water with a steering means, a control console and a power source all in operable and electrical communication. The steering means is a jet drive coupled to an impeller assembly mounted inside each float. Alternatively the steering means is a propulsion system with a pair of tunnel-type thrusters mounted inside the floats in the aircraft. The control console operates the taxiing system during steering and at least one electromagnetic lock during docking.

An unmanned aerial vehicle (UAV) for a remote oceanic environment includes a float system, at least one electric motor, and a seawater battery. The float system allows the UAV to maintain buoyancy on a body of water. The electric motor or motors produce the required lift for the UAV to achieve and maintain flight. The flight includes the UAV landing on the body of water and takeoff from the body of water. The seawater battery directly or indirectly powers the electric motor or motors using seawater from the body of water while the UAV is floating on the body of water.

The invention relates to an aircraft for takeoff and landing on water or on land. The aircraft comprises a fuselage and a spring-mounted landing gear. Landing gear wheels are mountable on the landing gear for takeoff and landing on land. Furthermore, the aircraft comprises a floating device coupleable to the landing gear of the aircraft via a connecting device. The floating device is configured such that the hydrostatic lifting force of the floating device is greater than the maximum takeoff weight of the aircraft.

A robust amphibious air vehicle incorporates a fuselage with buoyant stabilizers and wings extending from the fuselage. At least one lift fan is mounted in the fuselage. Movable propulsion units carried by the wings are rotatable through a range of angles adapted for vertical and horizontal flight operations.

A robust amphibious air vehicle incorporates a fuselage with buoyant stabilizers and wings extending from the fuselage. At least one lift fan is mounted in the fuselage. Movable propulsion units carried by the wings are rotatable through a range of angles adapted for vertical and horizontal flight operations.

An amphibious cargo carrying unmanned aerial vehicle (UAV) having a fuselage, two wings and two frames, in which a cargo hold is arranged at the lower end of the fuselage, the cargo hold is provided with a cargo chamber for cargo carrying, and the cargo hold can touch the water surface at the same time. When taking off or landing on the water surface, the hollow structure of the cargo chamber can provide additional buoyancy. The two wings are symmetrically arranged on both sides of the fuselage, the two frames are correspondingly arranged on the two wings, and the buoyancy parts can be detachably arranged on the two frames to provide buoyancy.

Provided herein is a taxiing system for steering an amphibious aircraft on a body of water. The system has a pair of thrusters that are deployed after landing on the water to taxi the amphibious the aircraft prior to docking and to unloading and are retractable to taxi the amphibious aircraft prior to take-off. Also provided is a docking device to dock the amphibious aircraft to a mooring buoy. In addition provided herein is a system for maneuvering an amphibious aircraft during taxiing and docking on water that integrates the taxiing system with the docking device.

Disclosed is a system for an amphibious aircraft where floats on each side of the aircraft include aerodynamic structures. The structures are configured to compensate for aerodynamic imbalances (e.g., in yaw and pitch) created by the incorporation of the floats onto the aircraft.