pitch control

(redirected from Vari-speed)

pitch control

i. 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.
References in periodicals archive ?
Add vari-speed chipmunk vocals from Shaz and the result is unspeakable - a gruesome final nail in a hapless popette's career coffin.
TRAK bed mills come standard with a mechanical vari-speed head.
formant frequency = filter center frequency * vari-speed ratio
This includes one of every indoor and outdoor power tool in the range - vari-speed drill with keyless chuck, jigsaw, detail sander, torch, power screwdriver, flexible Snakelight, handy vacuum cleaner, grass shears, shrubber and blade-trimmer plus two rechargeable batteries and charger.
Once you have a battery pack and charger you just add the tools - such as a vari-speed drill, jigsaw, sander, grass shears, shrubber, blade trimmer and handy accessories like a portable vacuum.