AIRCRAFT LIFTING SURFACE (VARIANTS)

摘要

In the first variant, the inventive lifting surface (1) is embodied along the span thereof and is provided with symmetrical and asymmetrical double convex profiles. The greatest thickness of each profile is located after the midpoint of each local chord at a distance equal to or less than 0.01b and is equal to (0.05-0.3)b, wherein b is the length of the local chord of the profile. In the second variant, the lifting surface comprises a fixed surface and a control surface connected thereto which are disposed in such a way that the chords thereof (10, 11) are sequentially arranged along the same straight line. The control surface is embodied such that it is trapezoidal and is mounted in such a way that it is rotatable about the mean line thereof (16) passing through the midpoints of the local chords (11). In the third variant, the lifting surface is made from two control surfaces connected by the end faces thereof. In the fourth variant, the lifting surface comprises a fixed surface and a control surface connected thereto by the end face thereof.