Question on wing tube lengths

[John Ferrell]

As I see it:
Where ever the tube ends is a high stress point. Getting it further out on the span reduces the loads imposed at the tube ends. 

If you can get away with it, tube reduction also saves weight.

John Ferrell    
http://DixieNC.US

  ----- Original Message ----- 
  From: Lance Van Nostrand 
  To: discussion at nsrca.org 
  Sent: Monday, June 21, 2004 12:18 AM
  Subject: Question on wing tube lengths


  Here's a question for anyone that's built a few planes from different manufacturers.  How much wing tube is the optimum to have sticking into each wing?  
     We cut our wings for 9.75" of tube in each wing but that's only because that's the length so that the false rib can support the gear plate.  What if the tube only went into the wing 8"....is that enough to stabilize it?

  I'm thinking of another (of my many) experiments by clipping the wings of an Aries by removing the root.  The wings I have already have a wing tube mounted so I'd be shortening the amount of wing tube that goes into the wing.

  Thanks,
  --Lance
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