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Boeing 787 Dreamliner Grounded In US and EU
Some Bitch writes "Following previous stories that the U.S. Federal Aviation Administration was to review the safety of the Boeing 787 and that Japan had already grounded their fleet, the FAA has issued an airworthiness directive which has been endorsed around the world with the fleets of all eight airlines flying the 787 now grounded. EADS (the parent company of Airbus) shares were up 3.9% at close of business." General Electric's call for more sifting of more data from more sensors might have some resonance right now within Boeing.
How embarassing for Boeing to have a $200M plane grounded because of a battery problem. They should have bought quality OEM batteries instead of going for the cheap Chinese imports on EBay.
The battery issue is front and center as it should be - if you have seen images of the melted battery it's pretty scary. But there are OTHER issues as well, from leaky fuel lines to bubbles and delam issues in the compositesâ¦
If you want news from today, you have to come back tomorrow.
Sure, EADS's shares are up, and since their major competitor Boeing had bad news today, perhaps we can speculate that "EADS shares up on bad news for rival Boeing", as finance journalists like to speculate. But you know who else's shares went up today? Boeing's. The stock market is weird, and a lot of factors go into price movements.
10 PRINT CHR$(205.5+RND(1)); : GOTO 10
See http://www.reuters.com/article/2013/01/15/uk-boeing-dreamliner-ntsb-idUSLNE90E00Y20130115
This looks bad.
I hope Boeing can [manage|subcontract] themselves out of this before they go broke...
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The A380's had quite a few missteps when they first went into service as well. Both are very new designs with a lot of new tech, sadly I am sure eventually one of them will be a fatal misstep, still won't stop me flying on them, I get an an A380 for a 17 hour flight in 2 days. I don't think I would be any less comfortable if it was a Dreamliner.
This plane uses a tremendous amount of electricity, see: http://www.wired.com/autopia/2013/01/boeing-787-electric-fire-grounding/
The li-ion batteries are from a company in Japan, but I wonder where they were manufactured. In the past, subcontractors outside Japan have done shoddy jobs making batteries, such as replacing mylar with paper. Once it's sealed up, how do you test it? Additionally, these batteries use cobolt oxide and are even more prone to overheating than tradition li-ion batteries. The batteries took a long time to certify.
A notorious SwissAir crash over the Atlantic was due to an overheated electrical bus. In a rush to get gambling devices onto seat backs, the airline had gone with a system that required a full computer for each display, which required more power than a more centralized system.
From the link: http://slashdot.org/topic/bi/the-787-dreamliner-scenario-how-data-can-solve-epic-messes/
"That’s supremely bad news for Boeing, which poured millions of dollars into the 787’s development."
No wonder its having issues. Or maybe Dr. Evil wrote this article?
It really seems silly to me that they chose to use a lithium ion battery with a cobalt cathode for use as a critical component of an airplane. They are not environmentally friendly, prone to fire, and don't last as long as some other technologies. They could have gone with a Lithium Iron battery and been much safer and require less maintenance. http://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery That would have only added about 18 pounds to the entire aircraft, certainly worth the greatly increased safety factor. Just goes to show that this plane was built to be a cheap as possible with only cursory regard to safety.
Working as a process development engineer, I can't tell you how many times I've run into a problem in high volume that didn't show it's head in testing. There are only so many variables you can test, especially if you have constraints to your sample size. From my experience major failures are never a single variable, but rather, an interaction between different variables that don't show statistical significance until you get a big enough sample.
15 years ago I worked putting together battery packs for small aircraft, and they were quite complicated, including heater elements and management electronics. I can only imagine how complex the systems are for something as large as a 787. The problem may not be with the actual battery, but the system which regulates the power.
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As everyone should know, modern airliners are pressurized. Now it is generally considered a BAD idea if it was to depressurize in midflight by say a window or door blowing out. How do you make it hard for this to happen? Well, you make the door open to the INSIDE, so that when locked and the airplane is under pressure, the pressure will press the door INTO the frame, making it impossible to blow out. This is why airline doors open INTO the aircraft and NOT out.
Basic stuff right? Only a company with no care for safety would change it.
Well boeing did it, so they could shove more cargo in it.
But surely then they would build the door really really well and have it tested really really well?
no... they did not and a LOT of people died when the door inenvitably did blow out and brought down the airplane.
Boeing has ALWAYS taken shortcuts and never given a shit about the risk and the FAA has always let them get away with it. Read up on the cargo door, it took a second incident for Boeing to be told to fix it BUT it was allowed to keep the outside opening door despite it being an obvious weak area.
You have to remember that in airliners, the interests are so gigantic that there is gigantic pressure on the engineers to find shortcuts and for those who are charged to oversee safety to look away so that their nations industry isn't hampered.
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