| 单词 | servo flap |
| 释义 | > as lemmasservo flap servo flap n. Aeronautics (a) a hinged flap on the trailing edge of a control surface of an aeroplane, designed to automatically move in the direction opposite that of the moving control surface; = balance tab n. at balance n.1 Additions (now rare); (b) a flap attached to the trailing edge of a helicopter's rotor blade, where it performs a function similar to that performed by the elevators in an aeroplane.Cf. servo tab n. ΚΠ 1929 Rep. & Mem. Aeronaut. Res. Comm. (H.M.S.O.) No. 1262. 2 The control column is attached directly to the servo flap by means of wires. 1964 U.S. Patent 3,129,769 1 This invention..deals more particularly with helicopters having main lifting rotors controlled in pitch by means of servo flaps attached to the blades of the rotors. 2016 R. Ganguli et al. Smart Helicopter Rotors iii. 71 There are primarily two types of flaps that are suitable to be mounted on helicopter blades: plain flaps and servo-flaps. < as lemmas |
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