Unpowered spontaneous rotation, esp. of a rotor or an aircraft; an instance of this.
| 单词 | θ207961 |
| 释义 | society > travel > air or space travel > a means of conveyance through the air > rotary wing aircraft > [noun] > parts of rotary wing aircraft > rotor > operation or condition of rotor (5) autorotation1908 Unpowered spontaneous rotation, esp. of a rotor or an aircraft; an instance of this. coning1931 Aeronautics. The action of the rotor blades of a helicopter slanting upwards when in motion so as to produce a cone-shaped pattern of rotation; hence… flapping1937 Aeronautics. The angular up-and-down oscillation of the blade of a helicopter about its hinge. Also attributive. windmill brake state1948 (see quot. 1969). feathering1970 The action of feathering the floats of a paddle-wheel or the blades of a propeller (see feather, v. 11b 11c); also, an angular motion of a… |
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