Yeah, the space between the cells theory sure makes GM's idea of liquid cooling look good.
Boeing Battery Fire Cause: Bad Wiring?
The Japan Transport Ministry released a report Wednesday saying it found that the battery in question had been improperly wired. The Associated Press citing the Transport Ministry report, said the ANA 787's auxiliary power unit was incorrectly connected to the main battery that overheated. However, the ministry said it still needed further investigation to determine exactly what caused the main battery to overheat.
One claims Boeing had determined that the solution to the overheating problem was to increase the gaps between the battery's individual cells, but the report gave no other details.
http://www.npr.org/blogs/thetwo-way...tery-fire-on-boeing-787-finds-improper-wiring
GM engineers and autoworkers sure shine compared to Boeing battery engineering and assemby.
One claims Boeing had determined that the solution to the overheating problem was to increase the gaps between the battery's individual cells, but the report gave no other details.
http://www.npr.org/blogs/thetwo-way...tery-fire-on-boeing-787-finds-improper-wiring
GM engineers and autoworkers sure shine compared to Boeing battery engineering and assemby.
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That would be the plane was mis-wired, not the battery as they are in totally different locations in the 787
They sure do!GM engineers and autoworkers sure shine compared to Boeing battery engineering and assemby.
Out of the blue, news that Boeing is proposing a fix for the problem. (Or maybe containment of the problem?)
http://seattletimes.com/html/businesstechnology/2020398575_boeingboxesxml.html
http://seattletimes.com/html/businesstechnology/2020398575_boeingboxesxml.html
Well never mind, Qantas cancelled all 50 orders of the dream liners due to delays - share price of Qantas is up!
I sort of lost interest after they rolled the first one out and couldn't do fatigue tests on the wings without major redesigns.
(Goes to prove teams of slide rulers mathematicians did a better job on the 707, 727 & 747's - than all the modern wizard IT software the modern young engineer relies on - crap in - results in crap out)
Qantas May buy a few later once all the issues are all sorted and there is no lengthy order que.
I sort of lost interest after they rolled the first one out and couldn't do fatigue tests on the wings without major redesigns.
(Goes to prove teams of slide rulers mathematicians did a better job on the 707, 727 & 747's - than all the modern wizard IT software the modern young engineer relies on - crap in - results in crap out)
Qantas May buy a few later once all the issues are all sorted and there is no lengthy order que.
Thank you for your comment. I am one of the old-school electrical engineers that used the slide rule since high school, did math in my head (I can do square roots!), remembered formulas, search for data in reference books and log tables, and use common sense and logic when I did my designs and applied data (the calculators and computers came after I graduated). Yet I have worked with hundreds of computers, mostly large-frame IBM systems, and I am now working with microcontrollers, such as the Basic Stamp, the Arduino Uno, and the Raspberry Pi. I am a DIYer and I still build my own experimental circuits (my favorite store is Radio Shack).(Goes to prove teams of slide rulers mathematicians did a better job on the 707, 727 & 747's - than all the modern wizard IT software the modern young engineer relies on - crap in - results in crap out)
I believe that modern engineers should be taught old-school methods first so they know how to think, and then learn to use computers later.
Reference please? An Article by AAP today says:Well never mind, Qantas cancelled all 50 orders of the dream liners due to delays - share price of Qantas is up!
Earlier articles stated that in addition to the 14 firm orders, Quantas has options for an additional 50 aircraft. They reduced their number of firm orders back in August of last year for financial reasons, long before the latest "battery" issue.Qantas chief executive Alan Joyce said the airline was working with Boeing on what any fix to the battery issues that has grounded all 787s worldwide would mean for its firm order of 14 Dreamliners.
+1 on that! We rely too much on computers. They should be a convenience, they shouldn't replace ability.I believe that modern engineers should be taught old-school methods first so they know how to think, and then learn to use computers later.
Correction my local rag was wrong & so was I - they canceled 1 of the initial order of 15, leaving 14 firm orders for their Jetstar division (Low cost carrier brand) and canceled all 35 for Qantas last August.
So it still appears they are taking 14 for Jetstar.
What a weird world - in days gone past the premium brand would have gotten the latest plane and now they give it the economy brand first ?
Maybe it will save them more money this way ?
So it still appears they are taking 14 for Jetstar.
What a weird world - in days gone past the premium brand would have gotten the latest plane and now they give it the economy brand first ?
Maybe it will save them more money this way ?
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