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Old 08-12-2004 | 10:56 AM
  #25  
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erbroens
 
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From: Curitiba, Parana, BRAZIL
Default RE: treiner jets

Time for more pics... The airfoils printed in the Winfoil software where transfered to aluminium plates for hot-wire cutting of the wing and stab. This wing are quite tapered and swept-back, so we used a reference marking at each tip to make the cut as accurate as possible, with one guy trying to match the number count of the other guy, and keeping the speed of the cut as smooth and even as possible. Btw, the airfoil at the outer panels of the wing is a naca 0010, with 2.5 degrees of washout... why 2.5 ? because 2 seemed too little and 3 too much! :-) the stab uses
a naca 0007 at the root and a naca 0009 at the tip without any washout. The wing incidence is 1 degree at the lex, and about 0 at the MAC and - 1,5 degree at the wing tip . the stab will be
set at about -1 degrees relative at the MAC. In the last pic , the foam core has a semi-rib that
anchors the wing tube guide.
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