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Old May 7th, 2019, 08:47 PM posted to uk.legal, rec.travel.air, soc.culture.russia, sci.military.naval, uk.politics.misc
Keema's Nan
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Posts: 17
Default Plane crash in Russia

On 7 May 2019, Fred J. McCall wrote
(in ):

Keema's wrote on Tue, 07 May 2019
14:51:34 +0100:

On 7 May 2019, abelard wrote
(in ):

On Mon, 06 May 2019 18:49:45 +0100, Keema's Nan
wrote:

On 6 May 2019, Byker wrote
(in ):

"MM" wrote in message ...

It was announced on this morning's Sky News that a lot more
passengersmight have escaped down the front slides if people had not
stopped tocollect luggage from the overhead lockers.

Could one not make the case that every passenger seen on the tarmac*with
luggage* should be prosecuted for collective manslaughter?

Check out "Airplaneski" (1995) sometime:

https://www.youtube.com/watch?v=Umr6JY6f2fw

Things have improved somewhat, but Aeroflot still has a LONG way to go...

A long way to go to do what?

Emulate the superb safety record of Boeing aircraft?

Any flying metal tube can be struck by lightning.

they are lowering the metal content of the skin...
i'm not sue if that is entirely a good idea


I think that the fuselage would act like a Faraday Cage, but the main
problem
is what the various electrical and electromagnetic fields and brief power
surges will do to the onboard computers - which are in control these days. I
imagine that the results of a lightning strike would be somewhat random on
the aircraft’s electrics.


Why would electronics inside the tube suffer any greater disruption
than, say, people?


Because people are not quite so susceptible to induced charges, being full of
water.

It's a Faraday shield (not a cage in this case)


Thanks for the pedantry.

or
it isn't. Electronics probably have their own shielding as well, so
are better protected than the stuff in the seats.


This is not the sort of thing you want at 35000ft, but at least up there the
crew have a few minutes to attempt to gain control and/or re-boot the
computers. This is not a possibility if the aircraft is on its final
approach
at a few thousand feet above the ground.


If you get sufficient 'jolt' to require rebooting the computers I
would expect something to be fried and they won't. However, note that
pretty much all 'fly by wire' aircraft have a manual mode and can be
flown without the computers. You might lose a lot of displays and
such, but they'll still fly.


Presumably you are unaware of the recent 737-Max crash? Not lightning, maybe
- but crew turning the computers off nevertheless.

Here is a timeline for you -

08:38 A sensor on the pilot's side falsely indicates that the plane is close
to stalling, triggering MCAS and pushing down the nose of the plane
08:39-40 The pilots try to counter this by adjusting the angle of stabilisers
on the tail of the plane using electrical switches on their control wheels to
bring the nose back up
08:40 They then disable the electrical system that was powering the software
that pushed the nose down
08:41 The crew then attempt to control the stabilisers manually with wheels -
something difficult to do while travelling at high speed
08:43 When this doesn't work, the pilots turn the electricity back on and
again try to move the stabilisers. However, the automated system engages
again and the plane goes into a dive from which it never recovered