Prop to High RPM on downwind

"Peter Duniho" wrote in message
...
"Chris" wrote in message
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[...]
With the 182, it is 80 knots turning from the 45 to downwind, 75 on
base, and 70
on final. I don't understand why pushing the prop to full flat has any
noise
effect whatsoever.

Exactly

Exactly, except for those airplanes that cannot maintain level flight at
pattern speed with gear and flaps out at final descent power settings.

Which is, by the way, all airplanes with a constant speed prop. The power
setting for final descent is necessarily lower than that required for
level flight within the pattern, even if you slowed ALL the way to your
final approach speed. RPM will thus be higher, assuming the pitch is set
to full fine pitch (high RPM). Higher RPM means more noise.

If Jim's 182 flies along level in the pattern at the same airspeed and
prop RPM that he uses for final descent, I have no idea how he
accomplishes a final descent at all. A plane like that would be stuck up
in the pattern indefinitely.

Pete

Why would anyone want to fly around the pattern at a constant altitude with
gear and flaps out except on a circling approach? I was leave the gear and
flaps up until I want to descend. I was under the impression that virtually
everyone did it this way.

Mike
MU-2