"Keith Willshaw" wrote:


"Gord Beaman" wrote in message
.. .
"Dudley Henriques" wrote:


"Are you trying to tell me that the
rotational (energy) of a propeller is
the same at 15 inches as it is at 61?"



If he was he was right, the rotational energy
is simply a product of angular velocity and mass
and is the same in coarse pitch, fine pitch or a vacuum.

--cut--

Keith

Well of course It is and I was...Dudley got all bent out of shape
and sort of lost it when I told him that and he sent the above
question...

Christ, he now intimates that **I** authored this question.

Miserable SOB..

He had some harebrained idea that a whole bunch of engine power
would add to the prop rotational energy, even though the RPM
didn't change. (constant speed prop)

The engine seized on this P-51 and we were discussing whether the
resultant energy release would possibly toss the pilot out...

It would seem that Henriques just cannot admit his error, poor
schmuck...I'd certainly hate to be that insecure, must feel
terrible.

--Gord.

"Bull ****! This is a constant speed prop. RPM is a
set value. The RPM can be set at 3000 and the
manifold pressure can be anywhere between 15 inches
and 61 inches, and it's the manifold pressure
combined with the set RPM that will determine the
power.....NOT the RPM!!! Are you trying to tell
me that the rotational (energy) of a propeller is
the same at 15 inches as it is at 61?".
-D Henriques