| 摘要 |
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. |
| 主权项 |
1. A motorized aeroplane comprising:
a fuselage having a base; a landing gear comprised of wheels and skis, the gear being retractable into the fuselage; at least two hydrofoils provided at the base of the fuselage, the hydrofoils being configured to provide hydrodynamic lift and stabilization arranged downwards of the aeroplane in a form of an inverted V, wherein: a junction between each hydrofoil and the fuselage is situated forward from a center of gravity of the aeroplane, a distance separating the junction between each hydrofoil and the fuselage, with respect to the center of gravity of the aeroplane is greater than 0% but not more than 170% of a mean aerodynamic chord of a main wing of the aeroplane, each hydrofoil is inclined downwards from a respective leading edge in a direction of a respective trailing edge, and a straight line connects the leading and trailing edges such that, with a horizontal tangential plane passing through the bottom of the fuselage, a nominal pitch angle of each hydrofoil is between 2° and 12°, a part of each hydrofoil is located beneath the horizontal tangential plane of the aeroplane, and another part of each hydrofoil is disposed forward from the center of gravity, as viewed from a front view of the aeroplane, a first anhedral angle of each hydrofoil with respect to the horizontal tangential plane is, in a normal position of the aeroplane, between 10° and 50°, and each hydrofoil is provided with a flexible intermediate section allowing a free end of the hydrofoil to flex upwards to the horizontal tangential plane passing through the bottom of the fuselage. |
