"Marty" wrote in message
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Charles Momsen wrote:




214/18 = 12. I did the calculation in radians and then forgot to divide
inches by 12 then 5280, I did just 5280. Good work on checking the math
errors, this is the 2nd one I've done here in recent times. At 18 mph the
angle of attack argument begins to hold water.


Freakin 'lecrical engineers, always thinking of omega.

Cheers
Martin

They're even worse doing mechanical problems.

"Marty" wrote in message
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Wilbur Hubbard wrote:
"Marty" wrote in message
...
Edgar wrote:
"Wilbur Hubbard" wrote in message
anews.com...

So you're talking about pitch of the prop as inches per revolution and
not pitch as angle of the prop shaft?
That's going off on a tangent as those talking about pitch angle in
this thread are talking about the angle of the prop shaft from the
horizontal or at least that's the impression I got.

Wilbur Hubbard
You are confused then. Propeller pitch is the distance a prop would
screw itself forward in one revolution if there was no slip.
I noticed from your earlier post that your 'bluewater yacht' has an
outboard on the stern. ROFL

I thought it odd also Edgar. Every mariner worth his salt knows that
propeller pitch refers to the distance the prop would travel through the
water under ideal conditions, usually expressed in inches per
revolution, the use of degrees is only for academic purposes as the
angle of the blade is not uniform from hub to tip in normal
applications. Shaft angle should be rather self explanatory.

Cheers
Martin

See definition 8 please:

2pitch vb 1 : to erect and fix firmly in place ~ a tent 2 : throw,
fling 3 : to deliver a baseball to a batter 4 : to toss (as coins) toward
a mark 5 : to set at a particular level ~ the voice low 6 : to fall
headlong 7 : to have the front end (as of a ship) alternately plunge and
rise 8 : to incline downward : slope

Now I know you're being obtuse!

Cheers
Martin

At least he's not "a-cute"!