Bruhn, The source of Fig.C11.46
Bruhn, The source of Fig.C11.46
(OP)
Hi.
Do you khow the source of Bruhn, Fig.C11.46?
I tried to look up the References(NACA Reports) in Bruhn's P.C 11.49, but couldn't find it.
Please tell me if you khow the source!
Do you khow the source of Bruhn, Fig.C11.46?
I tried to look up the References(NACA Reports) in Bruhn's P.C 11.49, but couldn't find it.
Please tell me if you khow the source!

RE: Bruhn, The source of Fig.C11.46
If Fscr > 0.5*Fcy, then FsPB = Fscr … interesting.
another day in paradise, or is paradise one day closer ?
RE: Bruhn, The source of Fig.C11.46
That is a curve from the Vought manual and is used to obtain Fspb to ensure no permanent buckling of the web at limit load.
RE: Bruhn, The source of Fig.C11.46
Thanks for your imformation.
I wanted to know what test data the figure was made from, but according to other threads, unfortunately the manual is not available and cannot be seen.
RE: Bruhn, The source of Fig.C11.46
Why not use it to say, conservatively, that FsPB = FsCR ?
another day in paradise, or is paradise one day closer ?
RE: Bruhn, The source of Fig.C11.46
NOTE.
Awhile back I was looking for a TOC and/or index to my Bruhn 1973 revision.
I found/downloaded the TOC embedded in a 119-page 'supplement' document approved by a Bruhn family member...
"A SUPPLEMENT TO ANALYSIS AND DESIGN OF FLIGHT VEHICLE STRUCTURES" [William F. McCombs]
I also found/downloaded a 309-page document...
"ERATTA - A Companion to Analysis and Design of Flight Vehicle Structures by Elmer F. Bruhn, PhD" [Bill Gran, GRAN Corporation]
I just checked the SUPPLEMENT... it looks like some REFERENCES were added many of the sections where references already existed.... perhaps there is more enlightenment in the Supp and/or the ERATTA...
Unsure of where these [2] documents came from... but I think it was the company library. Hesitate to post thee [2] documents directly to this thread [proprietary?]
NOTE/FYI. These few other references may/may-not shed some light on the topic...
"AFFDL-TR-69-42 STRESS ANALYSIS MANUAL" [Maddux, Vorst, Geissler, Moritz] [AD759199]
"Airframe Stress Analysis and Sizing" [CY NIU]
For now, I've gotta-go... some 'company work needs gitting done'.
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]
RE: Bruhn, The source of Fig.C11.46
Brian
www.espcomposites.com
RE: Bruhn, The source of Fig.C11.46
another day in paradise, or is paradise one day closer ?
RE: Bruhn, The source of Fig.C11.46
Try the number below; see who answers:
William F. McCombs
2106 Siesta Drive
Dallas, TX 75224
Tel: 214-337-5506
See also:
https://www.eng-tips.com/viewthread.cfm?qid=112697
www.sparweb.ca
RE: Bruhn, The source of Fig.C11.46
www.sparweb.ca
RE: Bruhn, The source of Fig.C11.46
NACA TM 490、604、605、606、774、838
NACA TN 1197、1347、2661、2662
NASA CR 101854
AFFDL-TR-69-42
AFWAL-TR-85-3096
WADC-TR-89-3030
Airframe Stress Analysis and Sizing (CY NIU)
I'm not sure, As Crackman says, Vought Manual seems to be the source.
RE: Bruhn, The source of Fig.C11.46
https://archive.org/details/BruhnSupplement/mode/2...
McCombs was also one of the authors of AFFDL-TR-67-184 Analytical Design Methods for Aircraft Structural Joints while at Vought.
Jim
Jim Kinney
Kennedy Space Center, FL
RE: Bruhn, The source of Fig.C11.46