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                           Tailwind-List Digest Archive
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                     Total Messages Posted Sun 12/06/09: 2
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Today's Message Index:
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     1. 03:11 PM - Leading edge flaps  (Kayberg@aol.com)
     2. 03:16 PM - leading edge flaps more  (Kayberg@aol.com)
 
 
 
________________________________  Message 1  _____________________________________


Time: 03:11:00 PM PST US
From: Kayberg@aol.com
Subject: Tailwind-List: Leading edge flaps

I have been thinking of another way to attach and actuate the leading edge  
flaps on my Buttercup wing.   I dont like the hinges for a number of  
reasons.

I am thinking about simply screwing the top of the backwards "C" to the  
main spar and let the bending of the metal act as a hinge.   I would  then set

up an actuation to make the 1 1/2 inch movement of the nose of the  LE.  I 
would rig it to be propped up under normal flight conditions and  nosed down 
for landing. I would not drill holes in the spar, but simply connect  the 
actuator inside the cabin with the flap belcrank.

Obviously it is a major challenge to come up with a light but solid means  
of doing this.   I have a couple ideas, but they are not clear enough  to 
even prototype.

I need something that will let me move the bottom of the backwards "D"  
about 1 3/4 inches fore and aft.  I would like to attach it to all of the  "D"

ribs.   And be able to get it on and off in some reasonable  way.

Maybe that is where Witt got stuck.

Doug Koenigsberg

________________________________  Message 2  _____________________________________


Time: 03:16:32 PM PST US
From: Kayberg@aol.com
Subject: Tailwind-List: leading edge flaps more

Forgot to add,

One of the other motivations is to be able to change the nose  profile.   

In its extreme, perhaps one nose profile could be drooped for  extreme 
short field activities.   Then for a long range run,  a  more bullet shaped nose

would give higher speed.  They could be switched in  an hour or so.

A couple hundred bucks worth of aluminum would let me experiment with  
getting a nose I prefered.

Plastic surgery for Buttercup.

No I am not drinking.  Just thinkin.

Doug Koenigsberg

 

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