Re: OT:Prevent Airline Hijacking


"Jim Yanik" <jyanik@xxxxxxxxxx> wrote in message
news:Xns9654738731BEjyanikkuanet@xxxxxxxxxxxxxxxxx
> "Pat Ford" <pat.ford@xxxxxx> wrote in news:d5vjbj$so4$1@xxxxxxxxxxxxxxx:
> > Have you seen the pictures of a jet that was pressurized to similate
> > highing at 30K foot and then shot with a gun? Not pretty.
>
> This is a myth.it even was debunked on Mythbusters TV show.
> (explosive decompression)
>
>
> > How about if there is a commotion the pilots drop the o2 in the cabin
> > and
> > everyone back there goes to sleep.
> > Pat
> >
>
> The pilots do not have control over the O2 levels.
> Perhaps cabin pressure,yes.
>
> --
> Jim Yanik
> jyanik
> at
> kua.net

Really, I dont think that is the case ( trace my IP), where I work we have
a pretty good idea of the effect of pressure differences across openings.
Ask a commercial diver what a 1 psi pressure drop can do ( I spent 3 hours
penned to a dam by the palm of my hand).
It is around 9 psi pressure drop in a super critical pressure vessel, once
the skin is peirced it tears open aided by both the air rushing along the
aircraft and the air rushing through the hole.
We have a 737 here at work that we are doing end of life testing, the skin
is not that thick..

If the pilot drops the cabin pressure the O2 partial pressure drops to the
point that it is similar to droping the O2 concentration.
Pat


.

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