Boeing's New 787 Wings — Amazingly Flexible 564
An anonymous reader writes "Boeing is making the wings of its new 787 out of carbon fiber instead of metal. That means the wings are so strong and flexible that they could bend upward and touch above the fuselage — or come close. The company is expected to deliver the first 787 to All Nippon Airlines in May 2008. 'Boeing has completed static testing of a three-quarter wingbox, but engineers are still considering whether to limit testing of the full wing to a 150% load limit held for 3 sec. or to continue bending it to see when it breaks. 'There's a raging debate within the engineering team to see if we should break it or not,' says [787 General Manager Mike] Bair.'" They have come a long way in wing flexibility.
I hope they test it! (Score:5, Insightful)
No one's ever really tried that before, so testing is critical.
Since this seems like such a new concept (please correct me if I'm wrong; I don't follow plane technology too much), it would just seem prudent to try bending the wings until they break... how can they make accurate judgments and calculations without knowing exactly how much stress the wings can take before snapping?
Who cares if they bend (Score:2, Insightful)
Re:I hope they test it! (Score:3, Insightful)
While its great they are so flexible (Score:5, Insightful)
Don't break it (Score:5, Insightful)
The story was about one of the earlier Boeing's, they had stressed the wing to like 10 times any theoretical force that could be possibly placed on it during a rather publicized testing of its strength. They test folks were all about trying to break it.
During the process of doing this an exec asked them what they were doing. "Breaking the wing" they replied.
The exec said No, stop the testing.
Why? the testers asked.
Because the headline won't read ,
"Boeing wing breaks at 40 times the stress encountered during possible flight conditions",
Instead it will read
"New wing of new Boeing Jet Breaks".
Please note Its been awhile since I heard that story, but I think the point is pretty clear.
Re:I really don't see the big deal (Score:1, Insightful)
Forget supersonic -- no way for that to be efficient. Make me a plane that's cheap enough to operate per cubic foot that I could have some creature comforts. Oh, wait... making planes cheaper to operate is Boeing's primary development goal.
Re:I hope they test it! (Score:2, Insightful)
What difference does it make if your wings shatter or merely deform? Either way, you're dead!
Re:Who cares if they bend (Score:1, Insightful)
Re:I hope they test it! (Score:5, Insightful)
Re:While its great they are so flexible (Score:3, Insightful)
Re:I hope they test it! (Score:5, Insightful)
So, while some failure modes might be worse than traditional aluminum wings, it's also likely to be better in others.
Then it becomes a matter of risk assessment and minimization. A good example would be seatbelts - there is the occasional accident where you'd be better off without the belt, but in the vast majority of accidents you're far better off with it on.
Carbon Fiber toxic? (Score:2, Insightful)
"> Wasn't that crash in Brooklyn a few months after 9/11 due to a carbon composite tailfin ripping off?
That was an Airbus plane... American products are genetically such superior that they need no testing at all! BTW, Boeing's reason for not testing is that fine carbon powder released by a tension breakage would contaminate and destroy expensive equipment and require hazmat cleaning procedures afterwards. Imagine if a B787 crashes real-life, what pollution would be there! Carbon fibre shards and powder are known dangerous to lungs, carbon brake discs are about to be banned from Formula-1 car races because many drivers are already ill. I think Boeing is doing an ugly thing purely for profit and fate will punih them."
Re:I hope they test it! (Score:2, Insightful)
I'm deducing your knowledge level from your comment, forgive me if I've miscalculated.
Re:Design accommodations? (Score:2, Insightful)
Why can't you develop a means of not smoking in public places? I personally could care less if you want to feed your nicotine addiction by smoking tobacco or shooting it, or whether you'd like to chew fiberglass or smoke arsenic in your spare time. But for the rest of us who find the smell and smog offensive and the thought of even more lethal second-hand smoke less than attractive, please abstain. Especially in crowded areas like airports.
Have you ever been to Frankfurt? After my last couple visits I'll be routing flights around it if for no other reasons than that it smells like a truck stop. Wait, I'll take that back as it's unfair to the last couple of truck stops I've been to.
I've seen smoking booths and umbrella/fume hood lounge arrangements in airports, and as a non-smoker I've got to say that it just doesn't work.