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Slipping with Flaps - C172

 
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Paul A. Franz, P.E.



Joined: 02 Dec 2008
Posts: 280
Location: Bellevue WA

PostPosted: Sun Dec 21, 2008 12:44 pm    Post subject: Slipping with Flaps - C172 Reply with quote

On Sun, December 21, 2008 11:26 am, Joel Mapes wrote:
Quote:

Many years ago I had a '59 straight-tail 172 with 145hp, fixed pitch and 40 degree
Johnson bar flaps. The warning against slips with full flaps is good advice. Trust me.

Would you care to elaborate?

--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell


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Paul A. Franz, P.E.
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
425.440.9505 Office
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Joel



Joined: 06 Oct 2006
Posts: 57
Location: Bremerton, WA USA

PostPosted: Mon Dec 22, 2008 11:43 am    Post subject: Slipping with Flaps - C172 Reply with quote

On Sun C December 21 C 2008 11:26 am C Joel Mapes wrote:
      >
      > Many years ago I had a '59 straight-tail 172 with 145hp C fixed pitch and 40 degree
      > Johnson bar flaps. The warning against slips with full flaps is good advice.
      Trust me.
     
      Would you care to elaborate?
     
      --
      Paul A. Franz
      Registration/Aircraft - N14UW/Merlin GT
      Engine/Prop - Rotax 914/NSI CAP
      Bellevue WA
      425.241.1618 Cell

 
Forward slips with full flaps in the middle of the white arc at altitude produced noticible pitch control buffet C enough so that I never tried it near the ground. With as much drag as those big barn door flaps at 40 degrees produced C slips really were not necessary. Yank up on the handle C hold up the nose until the airspeed got near the bottom of the white arc and then just let her come down. The sink rate was truly impressive.
Joel Model 5 912 GTA CS prop Aerocomp amphibs
It’s the same Hotmail®. If by “same” you mean up to 70% faster. Get your account now. [quote][b]


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Joel Mapes Kitfox 5 912 ULS Aerocomp amphibs
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