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Date: Sat, 6 Mar 2010 08:31:45 -0500
Message-ID: <1ab24f411003060531h334388bfn622b7c594fc0838a@mail.gmail.com>
Subject: The stalled propeller blade
From: Lynn Hanover <lehanover@gmail.com>
To: flyrotary@lancaironline.net
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For those who would like to go further into the weeds on stalled propeller
blades, here is research on the wood propeller for the WWII Spitfire.

Note that only half power could be used during part of the take off run, as
the blades would stall otherwise.

Note also that the thicker Clark "Y" was better than the thin bladed metal
prop of the time.

The Clark "Y" ??? Have we nothing better in 60 years? There is much work to
do on propeller design. About 80% left to discover...........

Lynn E. Hanover

http://naca.central.cranfield.ac.uk/reports/arc/rm/2357.pdf

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<div>For those who would like to go further into the weeds on stalled prope=
ller blades, here is research on the wood propeller for the WWII Spitfire. =
</div>
<div>=A0</div>
<div>Note that only half power could be used during part of the take off ru=
n, as the blades would stall otherwise.</div>
<div>=A0</div>
<div>Note also that the thicker Clark &quot;Y&quot; was better than the thi=
n bladed metal prop of the time. </div>
<div>=A0</div>
<div>The Clark &quot;Y&quot; ??? Have we nothing better in 60 years? There =
is much work to do on propeller design. About 80% left to discover.........=
..</div>
<div>=A0</div>
<div>Lynn E. Hanover</div>
<div>=A0</div>
<div><a href=3D"http://naca.central.cranfield.ac.uk/reports/arc/rm/2357.pdf=
">http://naca.central.cranfield.ac.uk/reports/arc/rm/2357.pdf</a></div>

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