From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: Propjet Strake
To: lml
Date: Sun, 11 Feb 2007 09:59:37 -0500
Message-ID: <web-1830228@logan.com>
In-Reply-To: <065e01c74de7$170cafc0$45260f40$@net>
References: <list-1826723@logan.com>
 <065e01c74de7$170cafc0$45260f40$@net>
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Posted for "JHWebb" <airmale@windstream.net>:

  In a past life I had the finances of a fairly large comporation to
  experiment and we were told by suposely knowledgeable aeronautiaclc expert
  to angle the vertical fins for the rotating slipstream and P factor. It
  turns out that this makes the airplane more difficult to fly. Requires a lot
  of rudder trim changes. After much expermantation we discovered that straigt
  ahead worked best. Then you don't have to trim for any speed change as well
  as power changes. If the vertical surface has 0 deflection you only have to
  trim for power changes and at higher speeds this requirement is almost zero.
  
    Sumerizing the best configuration is no defection, plus it produces lower
  drag overall.
  
  Jack Webb
  L360, LIV
  BSAE
  
"""
   BTW - Our fin is perfectly aligned with the direction of flight, but
   maybe a different alignment is better due to the asymmetry of the
   airflow from the prop.  Does anyone have any experience with this?
"""