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shearlag (Aeronautics)
1 May 08 3:19
Dear all,
Iam new to this forum.Iam basically a stress engineer.
We are into designing a T-tail for a military transport aircraft
Please fellow members, can anyone tell me any books, technical papers, journals or any manuals to refer to start with.
I only know that design requirements are different for civil aircraft and transport aircraft. But I dont know, whether there is any difference between cargo transport and military transport aircrafts by design requirements.
Thanks in advance
rb1957 (Aerospace)
1 May 08 8:07
does your plane have a flight envelop defined ? the peak loads on the empennage come from aerodynamic maneouvres, you need to react the airplane's pitching acceleration with an H. Stab load.
字串3
have you read FAR25 yet ? yes i know it doesn't strictly apply to military a/c but it is a good starting point.
basic airplane design texts (raymer, torenbeek) have good methods for estimating loads (for sizing structure, not for final loads).
does your plane have special conditions (from it's military role and operation) ?
shearlag (Aeronautics)
2 May 08 1:51
Thanks for your replay, rb1957. Aerodynamic group is working on the loads and flight envelope. Yes, I have given a request for a copy of FAR25. No idea about the special conditions you have mentioned. Thanks for the two books you have refered.
Thanking you,
With kindest regards,
rb1957 (Aerospace)
2 May 08 7:39
"request a copy of FAR25" ? ... it's on-line at the faa site
http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=5127fa330d5bd955454574a939ae1987&tpl=/ecfrbrowse/Title14/14cfr25_main_02.tpl 字串8
davidjh (Aeronautics)
3 May 08 1:55
Military transports often have very different, more severe fatique spectrums due to more frequent maneuvering (yanking and banking) than civil transports; often have design requirements for more maneuvering capability with system failures; and often have "survivablity" requirements (ie; structural strength with "battle damage"). Get these rigorously defined.
shearlag (Aeronautics)
3 May 08 3:11
Thanks rb1957 once again. I could able to access from the link you posted and to you too david, for the good piece of information.
GBor (Mechanical)
3 May 08 10:20
Go to www.faa.gov. On the right side is a section for "Regulations and Guidlines". The top option is federal aviation regulations (FAR). The top link on that site is "Current Federal Regulations". Then, you have to click on the hyperlink for 1-59. Keep following the links until you find the part you want. Garland E. Borowski, PE 字串8
Star Aviation
Andries (Aeronautics)
5 May 08 4:32
The dynamic behaviour is a very important issue, especially flutter. Do you have people looking at that?
Regards
Andries
shearlag (Aeronautics)
6 May 08 0:50
Thanks for the link, GBor..
yes Andries, i do understand that dynamic behaviour is very important.Aeroelasticity Group is working on this issue
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