单词 |
pitch control |
释义 |
pitch control
pitch controli. That giving manual control of the propeller pitch as is done in a constant-speed unit where datum is moved manually. In a variable-pitch propeller, the act of changing the pitch of the propeller. The pitch changes are done through pitch-control devices. ii. The combined cyclic/collective system of a helicopter. See collective and cyclic-pitch control column. iii. In fixed-wing aircraft, the control effected by the yoke or stick, moving control surfaces to bring about some changes in the pitch. iv. That giving control of the pitch in a VTOL (vertical takeoff and landing) aircraft at zero or a low forward speed. This normally is effected by the control stick. |
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