Message-ID: <3CAEB04A.13556FD@bright.net>
Date: Sat, 06 Apr 2002 03:22:34 -0500
From: J H Webb <airmale@bright.net>
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To: lancair.list@olsusa.com
Subject: Re: lancair.list V1 #370
References: <20020406060744.AAA27865@pop3.olsusa.com>
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Reply-To: lancair.list@olsusa.com

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> My prop stopped at about a 45 degree angle.
>
> Do you recall what your tests indicated was the best glide speed at MGW?

Jim
   Ref:  Gliding
  My prop was stopped at a 45 degree angle and I tried different angles with
better glide at any angle other than Horizontal where the prop is interfering with
the wing's airflow.  I determined  that an approximate speed of 140 mph at about
1600 lbs. with the prop windmilling in low rpm (full decrease).  Prop stopped the
optimum speed was a little slower.

    I think it is explainable when you look at the prop from the front or rear and
then look at the speed brakes being sold.  The flat plate area of the prop far
exceeds the area of any speed break that I have seen.  Then additionally it
probably boils down to, can the air negotiate the turn to smoothly flow around the
stopped prop.

I have very rarely flown at MGW as a high number was selected.

   My prop is a 72" Hartzell.

> Jack Webb,


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