KR> 5 1/2" outer main spars

2008-10-12 Thread allen_h_b...@notes.tcs.treas.gov
Has anyone done any stress analysis on the outer main spar built to the dimension on the early plans that showed the outer end at 5 ½ instead of 5 ¼ . When trimmed down to the wing tip airfoil thickness the spar cap height is 7/16? on top and bottom. I have found this to be the case with my sp

KR> 5 1/2" outer main spars

2008-10-12 Thread Mark Langford
Allen H Burr wrote: > Has anyone done any stress analysis on the outer main spar built to the > dimension on the early plans that showed the outer end at 5 ½ instead of 5 > ¼ . If you already know that there are plenty of KRs flying this way, where is the problem? Personally I wouldn't give it

KR> 5 1/2" outer main spars

2008-10-12 Thread Myron (Dan) Freeman
What airfoils are you going to use? Regards Myron (Dan) Freeman Indpls, Ind. 46203 USA. Home of 2007 World Champion Indpls, Colt's mfreem...@indy.rr.com Posted - Tuesday, 03/06/07 9:10 am

KR> 5 1/2" outer main spars

2008-10-12 Thread allen_h_b...@notes.tcs.treas.gov
I was thinking of using the AS5046 airfoil which takes more of the spar caps than the RAF48 by virtue of the more extreme angles. The original plans only differ in dimension at the wing tip end, so that when shaved to size the largest discrepancy is at the outer most end having the least load.

KR> 5 1/2" outer main spars

2008-10-12 Thread Myron (Dan) Freeman
Hi Allen I choose the AS5046 airfoil also. I stripped the RAF48 wings down to the bare spars and I'm rebuilding them. Regards Myron (Dan) Freeman Indpls, Ind. 46203 USA. Home of 2007 World Champion Indpls, Colt's mfreem...@indy.rr.com Posted - Wednesday, 03/07/07 8:49 am