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Old January 16th 07, 10:48 PM posted to rec.aviation.piloting,rec.aviation.student
Danny Deger
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Posts: 347
Default Why does airspeed change when I adjust the prop?


"Mxsmanic" wrote in message
...

snip

So ultimately why do you change the prop adjustment? At full power,
slowing the RPM just slows the aircraft down. So does reducing the
throttle. Why would I slow the RPM rather than reduce the throttle?


A fixed prop optimized for takeoff would overspeed the engine at cruise
speed. With variable pitch, the prop can be flat for take and higher pitch
for cruise.

Danny Deger