Re: Re: Prop Pitch

From: <RLBailey_at_care4free.net>
Date: Wed, 20 Feb 2008 11:09:04 -0000

John

This is totally opposite to what I have found over the years - I first found it at one of the Norwind comps at Wigan in early 80's.

I use lower pitch at root with a small amount of washout at tip and came to similar conclusions for F1D and F1L quite independently.

Never mind the stalling bit it sounds like a bit of percieved wisdom; it's the times that matter!

Bob

  ----- Original Message -----
  From: John Barker
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Monday, February 18, 2008 9:37 PM
  Subject: RE: [Indoor_Construction] Re: Prop Pitch


  Quote<It is a handy feature to have washout at the tip and higher pitch at
  hub this prevents prop tip stall>endquote

  I have heard this said many times until it seems almost like an act of
  faith. What I have never heard is any reason why one would want to prevent
  the tips stalling as opposed to any other part of the blade.

  John

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Received on Wed Feb 20 2008 - 03:14:52 CET