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Old 8th July 2008 | 18:30
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Finals19
 
Joined: Mar 2003
Posts: 437
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From: UK
Propellor Pitch.....

Just doing some online reading and was interested on any input on propellor pitch:

Props go fine at take off (assume turbo prop) because....?

- Fine pitch (low blade angle) allows maximum thrust, but limited airspeed to develop and max prop rpm. Also gives high drag

And on final approach / landing: for max available thrust if G/A is required, also can act as airbrake due to high drag

Props go to coarse pitch in cruise because....?

Produces lower rpm, improved fuel and range and lower throttle setting for given airspeed. Less drag and achieves higher cruise airspeeds.

Any more info or correction of the above would be much appreciated.
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