The invention discloses a low-induced-resistance helicopter rotor wing with a sweepback anhedral wingtip. The low-induced-resistance helicopter rotor is characterized in that a winglet is additionally arranged at one end, far away from the rotating center, namely a wingtip, of a rotor wing, the chordwise length of the root of the winglet is smaller than that of the tip of a main wing, the chord line of the tip of the winglet is lower than the rotary plane of the main wing, namely that the winglet has an anhedral angle, and the winglet twists inwards by a certain angle, so that the front edge of the winglet sweeps backwards. The low-induced-resistance helicopter rotor wing with the sweepback anhedral wingtip, which is provided by the invention, is entirely new, and the most significant innovation point lies in the aerodynamic layout of the wingtip. The rotor wing has the obvious characteristic of low hovering induced resistance, which is helpful for improving the hovering efficiency of helicopters.
Low-induced-resistance helicopter rotor wing with sweepback anhedral wingtip
2015-08-05
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
Engineering Index Backfile | 1950
|Emerald Group Publishing | 1950
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