🚀 go-pugleaf

Ron Miller wrote:

> Wasn't it Boeing that did some kind of demo about the early 707 that showed how
> they could puncture the fuselage and they had a form of 'rip stop'
> construction that prevented catastrophic propagation of the tear?
> (direct design response to the Comet problems).
> 
> Mr. Eglestone has my undivided attention as to his answer. (he has
> knowlege and is on MY side of the agenda so I tend to trust his
> description of what might happen. I would not have guessed that
> aircraft skinning was brittle).
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 MWE: As for Boeing Aircraft, I have no idea what they did with the
old Comet. I didn't start into heavy aircraft repair until 1965. I cut
my teeth on the Boeing B-52D/E bombers and the KC-135 series tankers.
Both of those aircraft used the standard 2024 -T3 series aluminum
skins and structure. Highly conventional designs were used as well.
The B-52 designs are so strong that we are still flying that series
today. I would imagine that it's good for another 15 years with
nothing more than electronics modifications and upgrades.

 Aircraft skin isn't brittle enough to cause anyone to be concerned
about sudden failure through normal wear and tear. However, there
isn't any real economical way to design a pressurized fuselage that
will withstand bullet punctures from the inside. It would be sort of
stupid to even consider doing it; after all, what are the odds of it
happening? Bullets hitting hydraulic and fuel lines? - the odds are
against it. Depending upon the type of aircraft, the majority of the
critical systems are under the passenger deck and along the sides of
the cargo compartments. It would take a lot of well placed shots to
hit most of those systems.
----


   (Mike Eglestone)

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<==============>

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