| 摘要 |
A convertible airplane having an outboard engine supported at each side of the airplane fuselage on a spar that is angularly adjusted through 90 DEG from a horizontal to a vertical position for operating propellers both for a helicopter and for an airplane. A wing section is provided between the fuselage and each engine which is freely pivotable on each spar and which has thrust bearings between the ends and the adjacent portions of the fuselage and engine cowling. This permits the wing to swing on the spar to assume a direction of attack so that the air will pass smoothly over the wing sections without any eddy currents at the rear edge and in the area therebeyond which detracts from the airplane lift. With this arrangement the engines may be swung from a horizontal to a vertical position to function as a helicopter for raising the airplane vertically during which time the wing sections will assume a vertical position. As the propellers and drive means are tilted to move the airplane in the direction of travel, the component of horizontal movement will produce the swinging of the wing section to a proper direction of attack and provide lift so that by the time the propellers are moved to a vertical position with the engines horizontal the wing sections will be in horizontal position and provide the lift required for flight.
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