Decompression Event in an airliner

[The SnowShow]

Just keep reminding yourself that there's a lot of air under your wings between you and the ground and that there would have to be a 5,000 ft vacuum for you to suddenly plummet to earth. Fact check for Pisteoff, but I doubt a plane has ever fallen out of the sky due to turbulence.

Agree but geeez, this shit and other vids are giving me nightmares. I've gotta stop watching YouTube clips of severe turbulence.

[jono]

One concept.





Yield Strength--how much it can take before being permanently deformed (aka elastic deformation)
Ultimate Strength--how much it can take before catastrophically failing, though it will be permanently deformed through strain hardening (aka plastic deformation)
Fracture--aka it dun broke in two pieces

Aluminum has a lower difference between strength and ultimate strength WRT steel and high carbon steel.

Wouldn't you say the sudden failure in that video is probably a buckling event rather than some part hitting its ultimate strength and letting go? The panels popping off the top/compression side look like a pretty strong indicator that way.

Buckling being tied to flexibility, it's still related to elasticity, but the comparison to steel or carbon is different if buckling is the first failure mode.

[Ted Striker]

You guys should loop The AD in on this. He's an actual Boeing engineer.

[DJSapp]

Wouldn't you say the sudden failure in that video is probably a buckling event rather than some part hitting its ultimate strength and letting go? The panels popping off the top/compression side look like a pretty strong indicator that way.

Buckling being tied to flexibility, it's still related to elasticity, but the comparison to steel or carbon is different if buckling is the first failure mode.

The panels popping off the top would be an indication that the rivets and welds holding the skin to the frame failed. That said, there were a lot of pops and bangs well before parts started flying off, so it's hard to say what failed first when you watch the video. I'm sure the boeing eggheads tore all that data apart.

[TheSilverSurfer]

Agree but geeez, this shit and other vids are giving me nightmares. I've gotta stop watching YouTube clips of severe turbulence.

https://youtu.be/qt0sGb43OjI

I'm about to go in a trip that requires a bunch of flights and I've been watching all of these disaster reenactments.

[From_the_NEK]

Sounds familiar other than the cabin crew shouting orders that make it sound like a crash is immenent...

https://www.usatoday.com/story/news/...ght/767020001/

[Ted Striker]

Nice caption: An AirAsia flight fell 24,000 feet

Uhmm... no, it didn't.

[The SnowShow]

Nice caption: An AirAsia flight fell 24,000 feet

Uhmm... no, it didn't.

Asshole clickbait media.

[Mazderati]

Experienced an aborted landing yesterday. FlightAware shows the plane descended to 2,150 when the pilot pulled up and throttled out to 4,650. No prior communication so clearly an unplanned event. Low cloud cover so no visual. All combined to create a very disorienting experience. Scary stuff for this nervous flyer. Flight deck later said our plane got too close to the plane ahead.

[The SnowShow]

Experienced an aborted landing yesterday. FlightAware shows the plane descended to 2,150 when the pilot pulled up and throttled out to 4,650. No prior communication so clearly an unplanned event. Low cloud cover so no visual. All combined to create a very disorienting experience. Scary stuff for this nervous flyer. Flight deck later said our plane got too close to the plane ahead.

Had that happen last summer at DIA. Glad they bail and don’t push it.

[The SnowShow]

Eeekkk!
https://www-m.cnn.com/2019/07/11/us/...www.cnn.com%2F

[summit]

Eeekkk!
https://www-m.cnn.com/2019/07/11/us/...www.cnn.com%2F

Buckle up

[irul&ublo]

Nice caption: An AirAsia flight fell 24,000 feet

Uhmm... no, it didn't.

Was that the one piloted by Wi To Lo and Ho Lee Fuk?

[MontuckyFried]

I hit turbulence like that on my last flight to HI too. Not wearing my seatbelt loose anymore.

Good idea. I've done hundreds of trips back and forth over the Pacific and that ocean always seems to be where I've hit the biggest pockets. I too wear my seatbelt fastened at all times I'm not up. I always found it kind of comical seeing everyone fly up out of their seats in perfect unison, though.

[The SnowShow]

I thought radar at this point was good enough to be able to ID mid to heavy turbulence and allow the pilots to avoid it.

[Ted Striker]

I don't know the specifics on this particular incident, but there are basically only four types of naturally occurring turbulence, and as far as onboard radar goes, you can really only "see" convective/frontal. The reason for that is that the radar is just returning water droplets from cumulus, and cumulonimbus clouds. Turbulence associated with shears/jet streams would be clear air, i.e. invisible.

[summit]

5th type of turbulence...

Russian turbulence:



Buckle up?

[The SnowShow]

This always makes me feel better about flying

I wish I was that calm during bad turbulence.

[The AD]

You guys should loop The AD in on this. He's an actual Boeing engineer.

Heh, must have missed this eight years ago!

[Ted Striker]

I'm looking at it now and wondering how I knew what you did for a living. Did you (or Trebek) mention it on Jeopardy?

[The AD]

Agree but geeez, this shit and other vids are giving me nightmares. I've gotta stop watching YouTube clips of severe turbulence.

I did, yes, and I'm sure I've mentioned it here, too.

[Ted Striker]

I see the quote function is still grabbing the wrong post. Kind of a spin the wheel, take yer chances!

[The AD]

Ha ha, didn't even notice that.