초록 ▼

The invention is a small flap like device (18) for attachment to the trailing edge (14) of an aircraft wing (10) which improves the coefficient of lift and reduces the coefficient of drag providing an overall increase in fuel economy. The flap (18) is a flat plate-like member having a length (19) of

The invention is a small flap like device (18) for attachment to the trailing edge (14) of an aircraft wing (10) which improves the coefficient of lift and reduces the coefficient of drag providing an overall increase in fuel economy. The flap (18) is a flat plate-like member having a length (19) of between 0.5% to 1.5% of the chord of the airfoil and at a downward angle (21) to the chord of between 5°and 25°.

대표청구항 ▼

An improvement for a high subsonic or transonic airfoil for an aircraft or the like, said airfoil having a chord length defined by the leading and trailing edge of the airfoil, the improvement comprising: a flap member mounted to the trailing edge having a length of between 0.5% to 1.5% of the chord

An improvement for a high subsonic or transonic airfoil for an aircraft or the like, said airfoil having a chord length defined by the leading and trailing edge of the airfoil, the improvement comprising: a flap member mounted to the trailing edge having a length of between 0.5% to 1.5% of the chord of the airfoil; and positioned at an angle of between 5°and 25°downward from the plane of the chord.