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Thread ID: 126294 2012-08-19 00:56:00 Flight question FoxyMX (5) PC World Chat
Post ID Timestamp Content User
1295441 2012-08-19 21:46:00 Since the forum has quite a few pilots and plane enthusiasts perhaps someone can answer a question I have.

If a passenger plane similar to and the size of our national JetStar planes had just taken off and was banking to the left to turn, how far could its wing dip down before it got into trouble and fell out of the sky?

Actually that would never happen as all the big modern passenger jets of today are fitted with alarms etc to stop this from happening, also computers on the plane would also stop this from happening as when they sense that the plane has got to a certain bank angle they would take over control and not let the plane bank any further. Also when the plane is flying with the auto pilot and FMC on it will only bank to a certain angle.
:)
Trev (427)
1295442 2012-08-19 22:22:00 Some limits imposed are for the benefit of passenger comfort, and there's nothing wrong with that. Most passengers looking down the wing in a 30 degree bank on approach (e.g. close to terra firma) are convinced the aircraft is in a 90 degree (vertical) bank anyway.

I trotted this one out last year, a Boeing 707 in a barrel roll - note the famous image at the end, of the aircraft inverted ...

Boeing 707 barrel roll by test pilot Tex Johnson (www.airlinereporter.com)

One could argue the main reason airlines don't like their pilots doing these manouvres is the cost of cleaning up the cabin afterwards ... not to mention the horrendous cost of drycleaning passengers clothing these days. :devil
WalOne (4202)
1295443 2012-08-20 05:32:00 Anyhow, why did you ask, Foxy?

Just wanted to know how close to the Pearly Gates I was. :stare:



Yep, that question is always sure to fire up any forum, hence me mentioning it ;) I remember the 2005 discussion very well lol. Wow, it was that long ago?!

Trust you. :rolleyes: :p
FoxyMX (5)
1295444 2012-08-20 05:36:00 Actually that would never happen as all the big modern passenger jets of today are fitted with alarms etc to stop this from happening, also computers on the plane would also stop this from happening as when they sense that the plane has got to a certain bank angle they would take over control and not let the plane bank any further .


What would never happen? The plane would not fall out of the sky or it would not exceed a certain bank angle? Either way, that is reassuring to know .
FoxyMX (5)
1295445 2012-08-20 05:37:00 It was a long time ago.and did we ever reach a conclusion? It is bloody obvious that the plane could NOT take off. :thumbs: Richard (739)
1295446 2012-08-20 05:48:00 Some limits imposed are for the benefit of passenger comfort, and there's nothing wrong with that. Most passengers looking down the wing in a 30 degree bank on approach (e.g. close to terra firma) are convinced the aircraft is in a 90 degree (vertical) bank anyway.

I trotted this one out last year, a Boeing 707 in a barrel roll - note the famous image at the end, of the aircraft inverted ...

Boeing 707 barrel roll by test pilot Tex Johnson (www.airlinereporter.com)

One could argue the main reason airlines don't like their pilots doing these manouvres is the cost of cleaning up the cabin afterwards ... not to mention the horrendous cost of drycleaning passengers clothing these days. :devil

Flippin' heck, did that pilot have any passengers with him? :eek: :p

The incident with the momentary extreme bank (to use words listed here) was definitely not a normal bank. I have flown dozens and dozens of times so I know that it was unusual and I have never experienced anything like it. The plane was already in what was probably a 30 degree bank when it happened and its wings were not far off being vertical for a second or two. The entire cabin gave a huge gasp of fright when it happened and the teenage girls in the seats across the aisle from me looked terrified. I probably did as well. :rolleyes: :p
FoxyMX (5)
1295447 2012-08-20 05:56:00 Ah, teenagers on board ~ ~ that explains it. They were just hooning a bit, in typical teenage fashion. R2x1 (4628)
1295448 2012-08-20 06:08:00 What would never happen? The plane would not fall out of the sky or it would not exceed a certain bank angle? Either way, that is reassuring to know.
By reading your reply to walones post it sounds like you got an upcurrent under one wing that forced it to do that, but in normal circumstances like in calm air that wouldn't happen.
:)
Trev (427)
1295449 2012-08-20 06:38:00 By reading your reply to walones post it sounds like you got an upcurrent under one wing that forced it to do that, but in normal circumstances like in calm air that wouldn't happen.


Either that or the pilot spilled something down his trousers. :p

Since I know nothing about how to fly a plane I assume that it is always possible for either the pilot or the plane's computers to make instant adjustments to stop it from going too far and falling out of the sky if that was the case, (the upcurrent)?
FoxyMX (5)
1295450 2012-08-20 08:51:00 On big planes the pilots don't do any of the flying these days, my neighbour in Nelson who flies for Air NZ is giving it up as he is getting bored watching the plane fly itself everyday gary67 (56)
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