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re: Boeing 777X’s fuselage split dramatically during September stress test

Posted on 11/29/19 at 1:12 pm to
Posted by slackster
Houston
Member since Mar 2009
91873 posts
Posted on 11/29/19 at 1:12 pm to
quote:

most trusted” is demonstrably false at this point


Orders say otherwise.
Posted by Mid Iowa Tiger
Undisclosed Secure Location
Member since Feb 2008
25159 posts
Posted on 11/29/19 at 1:16 pm to
No it was going through the initial certification phase with the FAA. It is not uncommon for catastrophic failures and when they are that close to the maximums the FAA will allow the RE-engineering to be done with physics and engineering as proof rather than rebuild and destroy another one.

This is the Times piling in what is a non-issue.

When we were working through 135 certifications for our plane designs the stress tests always destroyed the prototypes. The key is how close to the “redline” are you before they are destroyed.
Posted by slacker130
Your mom
Member since Jul 2010
8974 posts
Posted on 11/29/19 at 1:19 pm to
quote:

I wonder if that KC46A Pegasus based on the 767 might ever face those kind of stresses. You know, maybe while dodging Air to Air missiles or MiG's or something of that nature.


Hahaha. Nope.
Posted by OleWarSkuleAlum
Huntsville, AL
Member since Dec 2013
10293 posts
Posted on 11/29/19 at 1:40 pm to
quote:

Mid Iowa Tiger


Are you still in the industry? I remember you saying you were on the VisionAire team.
Posted by Traveler
I'm not late-I'm early for tomorrow
Member since Sep 2003
26602 posts
Posted on 11/29/19 at 2:03 pm to
These threads are always entertaining.
Posted by LCA131
Home of the Fake Sig lines
Member since Feb 2008
77703 posts
Posted on 11/29/19 at 2:05 pm to
quote:

These threads are always entertaining.


Is a good quality duct tape generally part of a standard repair kit?
Posted by Traveler
I'm not late-I'm early for tomorrow
Member since Sep 2003
26602 posts
Posted on 11/29/19 at 2:06 pm to
Absolutely, along with a big hammer and vise grips!
Posted by antibarner
Member since Oct 2009
26927 posts
Posted on 11/29/19 at 2:08 pm to
Sorry but Boeing IS responsible. There have been issues with the plane from almost Day One, and they are STILL having issues with it.

Airbus was going to assemble their KC45 in Mobile, Al, they had a proven tanker design based on the A330 and won the contract, but Obama frickery interfered. LINK LINK LINK

Those links are just some of the recent issues...they might eventually iron things out but so far the KC46A is a KCPOS

By the way, Airbus built that facility in Mobile and if Boeing can't get their act together, the USAF can still buy the KC45, which was a better plane to begin with.
This post was edited on 11/29/19 at 2:11 pm
Posted by Reservoir dawg
Member since Oct 2013
15168 posts
Posted on 11/29/19 at 2:09 pm to
quote:

If those stresses occurred in a real life situation you are likely about to die anyway.


True, but you can't achieve those loads in real world flying. They are stressed to failure.
Posted by dewster
Chicago
Member since Aug 2006
26627 posts
Posted on 11/29/19 at 2:11 pm to
It was a test. They are supposed to find the weak points and fix it.

They apply enough stress to break the wings.
This post was edited on 11/29/19 at 2:12 pm
Posted by antibarner
Member since Oct 2009
26927 posts
Posted on 11/29/19 at 2:12 pm to
Are you saying a tanker will never have to face air to air missiles?
Posted by OleWarSkuleAlum
Huntsville, AL
Member since Dec 2013
10293 posts
Posted on 11/29/19 at 2:14 pm to
quote:

Are you saying a tanker will never have to face air to air missiles?


A tanker would potentially have to face surface fired or A2A missiles. That is why they have both passive and active ASE systems installed and operational. They are not doing any real maneuvering that is going to push the envelope of the aircraft structural integrity.
Posted by LCA131
Home of the Fake Sig lines
Member since Feb 2008
77703 posts
Posted on 11/29/19 at 2:17 pm to
quote:

Absolutely, along with a big hammer and vise grips!




They are cool. So are channel locks. Both are useful.

That gorilla tape seems like good stuff.

I like to sharpen knives.
Posted by antibarner
Member since Oct 2009
26927 posts
Posted on 11/29/19 at 2:17 pm to
So you are saying a tanker that is under attack just flies straight and level. I seriously doubt that. A fighter they are not, I understand that but they are going to maneuver.
This post was edited on 11/29/19 at 2:19 pm
Posted by OleWarSkuleAlum
Huntsville, AL
Member since Dec 2013
10293 posts
Posted on 11/29/19 at 2:19 pm to
quote:

o you are saying a tanker that is under attack just flies straight and level. I seriously doubt that.


I can’t go any further due to classification, but it’s not putting the airframe at its absolute max
Posted by antibarner
Member since Oct 2009
26927 posts
Posted on 11/29/19 at 2:24 pm to
I understand , but if a SAM is coming at you you do what you have to do and hope they built it well.
Posted by BHM
Member since Jun 2012
4110 posts
Posted on 11/29/19 at 2:24 pm to
quote:

Had Airbus gotten that contract we would have had a proven design 



There are few models more proven than the 767. The issues with the KC-46 have nothing to do with the proven 767 airframe.
Posted by LCA131
Home of the Fake Sig lines
Member since Feb 2008
77703 posts
Posted on 11/29/19 at 2:25 pm to
quote:

I can’t go any further due to classification, but it’s not putting the airframe at its absolute max



Posted by antibarner
Member since Oct 2009
26927 posts
Posted on 11/29/19 at 2:29 pm to
The issues with the KC46 are on Boeing there buddy. I posted three links and I could post dozens.

They got the contract and did not have a proven design ready to go is what happened.In a nutshell, they out politicked Airbus and stole the contract, and they have not delivered.

Airbus had a proven design already flying and in service, and had Obama and his cronies stayed out of it the USAF would have had replacement tankers some time ago.
Posted by Hogbit
Benton, AR
Member since Aug 2019
3091 posts
Posted on 11/29/19 at 2:33 pm to
Airbus is a euro company that is subsidized by numerous european governments.
Therefore, they compete unfairly against an unsubsidized american company, which is boeing.
I will say it again...
frick airbus.
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