| 摘要 |
<p>The flap has a profile (6) stretching along a chord and including a leading edge, a trailing edge (8), a lower surface and an upper surface. The flap turns around a rotational axis defined based on a flap wing-spread. The lower and upper surfaces present a non-concave shape beyond 25 percent of the chord. The trailing edge presents an angle (alpha ) between lines of the lower and upper surface to the trailing edge. The longitudinal rotational axis is situated at a distance of about 15 percent to 35 percent of the chord of the flap from the leading edge. An independent claim is also included for a helicopter rotor blade including the high-lift flap.</p> |
