Foam Honey-Coming Weight savings

[Wayne Galligan]

Jim,

My last set of wings I cored out around the fat part of the wing between leading edge and wing tube and behind the wing tube and saved .5 oz per core.   Some of the guys that honeycomb the whole wing are saving about 1 to 1.25 oz per panel.  But they  generally glass the wing and paint it too.   I hollow out the wing tips then cap them with 1/8 lt balsa wood and lighten the root rib also.  Overall this way I save about 1.25 per wing panel from the regular way.   
What kind of glue do you use?

Wayne Galligan

  ----- Original Message ----- 
  From: Atwood, Mark 
  To: discussion at nsrca.org 
  Sent: Wednesday, July 27, 2005 3:47 PM
  Subject: RE: Foam Honey-Coming Weight savings


  Well.I can't speak for the current wing plan forms, but we did a bunch of tests on the older Arch Nemesis wings and at the time.it was a waste of time.  Granted.we weren't quite as close to the weight limit then. but all in all we saved on average less than 1oz per panel in the finished product.about 1.75oz TOTAL in the plane.   Not bad if it was quicker to do, but at the time it was a lot of work for very little gain.

   

  Now that we're scraping for every oz though.it might be worth re-evaluating.

   

  -M

   


------------------------------------------------------------------------------

  From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On Behalf Of Jim_Woodward at beaerospace.com
  Sent: Wednesday, July 27, 2005 4:47 PM
  To: discussion at nsrca.org
  Subject: Foam Honey-Coming Weight savings

   


  Hi Guys, 

  Does anyone happen to have some experience in weight reductions from foam honey-combing?  Wing cores, stab cores, vertical fin and rudder cores?  Maybe a 25% weight reduction? 

  Thanks, 
  Jim W. 
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