cheema Posted July 22, 2010 Share Posted July 22, 2010 I was thinking, why did charlie has controlable pitch in ground range and fixed speed in alpha range. why didnt its a contolable pitch propellor all the way? Any logic.... Quote Link to comment Share on other sites More sharing options...
BobWoods Posted July 22, 2010 Share Posted July 22, 2010 It is as it is because that's the way it works best. It allows for an engine to operate at constant speed in flight at different air speeds, power settings and flight levels. Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted July 22, 2010 Share Posted July 22, 2010 Lots of reasons as Bob said "that's the way it works best". A fixed pitch prop will only be truly effecient at ONLY one speed. A fixed pitch prop cannot reverse without changing the direction of rotation, which would be pretty hard to do...so for best performance (aircraft and fuel) a single speed and a varible pitch prop to "absorb" the excess power (as we increase the throttle) A fixed pitch prop cannot compensate for external changes the operator must constantly change the fuel schedule to maintain a selected power setting. Quote Link to comment Share on other sites More sharing options...
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