Abstract: An unmanned aerial vehicle includes a fuselage having a first side and a second side, a first arm disposed on a first side of the fuselage, wherein the first arm is coupled to one or more first propellers, wherein the first arm is adapted to move between a first folded position in which the first arm is in a folded state inside the fuselage and a first extended position in which a first section of the first arm and the one or more first propellers are outside the fuselage, and a second arm disposed on the second side of the fuselage, wherein the second arm is coupled to one or more second propellers, wherein the second arm is adapted to move between a second folded position in which the second arm is in a folded state inside the fuselage and a second extended position in which a second section of the second arm and the one or more second propellers are outside the fuselage.

Abstract: Methods, systems and apparatus for the deployment and retrieval of child UAVs from a V-TOL UAV Mothership. The Mothership may be piloted from a base station to one or more destination locations. At the destination location, one or more child UAVs may be deployed from a cargo bay module. The child UAVs perform tasks or complete a mission before coordinating their retrieval with the V-TOL UAV Mothership. The Mothership may plan an intercept course to retrieve the child UAVs in mid-flight or coordinate a hovering type retrieval with the child UAVs. The child UAVs are retrieved through an actuated frontal opening which provides access to the cargo bay without having to navigate through turbulence created beneath the hovering Mothership by the vertical thrust rotors.

Abstract: An unmanned aerial vehicle includes a fuselage having a first side and a second side, a first arm disposed on a first side of the fuselage, wherein the first arm is coupled to one or more first propellers, wherein the first arm is adapted to move between a first folded position in which the first arm is in a folded state inside the fuselage and a first extended position in which a first section of the first arm and the one or more first propellers are outside the fuselage, and a second arm disposed on the second side of the fuselage, wherein the second arm is coupled to one or more second propellers, wherein the second arm is adapted to move between a second folded position in which the second arm is in a folded state inside the fuselage and a second extended position in which a second section of the second arm and the one or more second propellers are outside the fuselage.

Abstract: An aeroplane includes a fuselage having a pair of hydrofoils providing hydrodynamic lift and stabilization arranged in the form of an inverted V. The junction between each hydrofoil and fuselage is situated forward the center of gravity of the aeroplane. The distance separating the junction between each hydrofoil and the fuselage, with respect to the center of gravity of the aeroplane is comprised between 0 and 170% of the mean aerodynamic chord of the main wing of the aeroplane, preferably between 20% and 135%. Each hydrofoil is inclined downwards, from its leading edge in the direction of its trailing edge. The straight line connecting these two edges form, a nominal pitch angle comprised between 2 and 12°, preferably between 6 and 8°. A part of the hydrofoil is located beneath a horizontal tangential plane of the aeroplane; each hydrofoil has a flexible intermediate section allowing the hydrofoil to flex upwards.

Abstract: An aeroplane includes a fuselage having a pair of hydrofoils providing hydrodynamic lift and stabilization arranged downwards in the form of an inverted V. The junction between each hydrofoil and the fuselage is situated forward from the centre of gravity of the aeroplane. The distance separating the junction between each hydrofoil and the fuselage, with respect to the centre of gravity of the aeroplane is comprised between 0 and 170% of the mean aerodynamic chord of the main wing of the aeroplane, preferably between 20% and 135%. Each hydrofoil is inclined downwards, from its leading edge in the direction of its trailing edge. The straight line connecting these two edges form, a nominal pitch angle comprised between 2 and 12°, preferably between 6 and 8°. The part of the hydrofoil located beneath the tangential plane is situated forward from the centre of gravity.

Abstract: A motorized airplane includes a landing gear with at least two legs capable of retracting into the fuselage via hatches. A pair of hydrofoils is fitted to the base of the fuselage in conformance with the ailerons used for lift and hydrodynamic stability, directed towards the base like a reverse V shape. The legs of the landing gear are each articulated around the pivot axes, fitted onto the hydrofoils. The landing gear is dual-function, using wheels or skis suspended on legs. Applications: airplane for landing on water, ground and snow.

Abstract: A motorised airplane includes a landing gear with at least two legs capable of retracting into the fuselage via hatches. A pair of hydrofoils is fitted to the base of the fuselage in conformance with the ailerons used for lift and hydrodynamic stability, directed towards the base like a reverse V shape. The legs of the landing gear are each articulated around the pivot axes, fitted onto the hydrofoils. The landing gear is dual-function, using wheels or skis suspended on legs. Applications: airplane for landing on water, ground and snow.