Crash Test
Crash Test
(OP)
Dear All,
So Boeing has carried out their composite fuselage 787 crash test...
Is it a new requirement only for composite fuselage or also for monolithic Aluminium ?
Regards
So Boeing has carried out their composite fuselage 787 crash test...
Is it a new requirement only for composite fuselage or also for monolithic Aluminium ?
Regards





RE: Crash Test
RE: Crash Test
The crash test was required to show equivalent safety to existing, aluminum fuselage aircraft.
RE: Crash Test
If I understand correctly, FAA required a full scale composite fuselage test article for the crash test. Cannot it be a smaller scale or only a few frame bays of fuselage structure only? Is there any background evidence to require such a test?
RE: Crash Test
RE: Crash Test
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Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: Crash Test
RE: Crash Test
RE: Crash Test
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Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: Crash Test
RE: Crash Test
http://se
If you "heard" it on the internet, it's guilty until proven innocent. - DCS
RE: Crash Test
Answer to your question can be found in the folowing link...
http:
....dropping a 10-foot-long (3-meter) fuselage section from a height of about two stories to see how the carbon-fiber composites would hold up on impact.
RE: Crash Test
Now that looked fun!
KENAT, probably the least qualified checker you'll ever meet...
RE: Crash Test
How would this aircraft survive the type of crash experienced at Pearson airport in 2005?
http://en.wikipedia.org/wiki/Air_France_Flight_358
Would all the passengers get out after the type of fire that ensued? Building the entire fuselage from CF must be challenging from a FAR 25.853 point of view...
Steven Fahey, CET
RE: Crash Test
thread1088-197935: Composites are deadly.
Wes C.
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No trees were killed in the sending of this message, but a large number of electrons were terribly inconvenienced.
RE: Crash Test
Steven Fahey, CET
RE: Crash Test
http://citeseer.ist.psu.edu/626400.html
in the right hand side of the page is a pdf which will open up a report.
RE: Crash Test
"...when test pieces were subjected to high kinetic energy impact at the same time as high temperature (1000ºC) flame, substantial quantities of respirable fibres were released."
The author says that to get really dangerous you need both impact and high temperature simultaneously. With regard to the A340 crash at Toronto he says:
"...because any high energy impact was not coincident with the high temperature fire, there was little or no release of respirable fibres. Additionally the weather was kind and a short rainstorm each day minimised the risk from respirable dust. The overall site hazards from this crash, which were expected to be severe, were easily managed with disposable coveralls and respiratory protection."
So, not exactly nothing to worry about, but not quite as bad as it could be.
PS: ally fuses can to burn through quite rapidly when flames from the outside impinge on them (Burn-through contributed to a few of the deaths at Manchester UK in 1985 - though most were toxic gas inhalation). A carbon laminate is a lot more resistant to burn through. On the other hand, you don't want it to increase FST dangers inside the fuse. Even external materials are increasingly subject to FST regs these days.
PPS: Swearingen and Fatstress, thanks for the Boeing fuse test links.
RE: Crash Test
JIM
RE: Crash Test
RE: Crash Test
jim
RE: Crash Test
Sure it happens but my guess is that there's more often a slip than not. Or, my personal favorit, something gets dropped/pushed out till later.
From my experience management never want to use anything approaching 'worst case' estimates for setting schedules. Compounded by the fact that often our guesses at 'worst case' are in fact optimistic, then programs like this tend to slip and/or go over budget.
KENAT, probably the least qualified checker you'll ever meet...
RE: Crash Test
RE: Crash Test
jim