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Old March 26th, 2013, 05:01 PM   #1721
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HU
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Boeing Flight Line by moonm, on Flickr
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Boeing Flight Line by moonm, on Flickr
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Old March 26th, 2013, 08:33 PM   #1722
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Yeah good for LOT indeed as it has turned out to be successful. Heres more:

Boeing completes 787 flight, will move on to certification demonstration:

http://www.bizjournals.com/wichita/n...will-move.html
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Old March 26th, 2013, 08:34 PM   #1723
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How many flight hours do they need to perform to re-certify again?
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Old March 26th, 2013, 09:06 PM   #1724
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Boeing has said it will do 1 certification flight for the battery, just to show that everything works properly in flight. Plus they will test the battery to failure on board of the ZA005, but that is done on the ground. This is to test the containment box around the battery, to see it actually contains the smoke and heat when there is another fire or thermal runaway.

There's not a number of flight hours that is needed since it's just the battery. Remember that the original certification of the 787 is still in place, the plane was only grounded not de-certified. But the FAA can always demand more flights, and it's likely that this will happen. That's something we will see over the next couple of weeks after the 1st certification has happened and the FAA had time to analyze the results. It also depends on the static tests.
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Old March 26th, 2013, 09:11 PM   #1725
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Makes sense. I wouldn't think the FAA will let them get away with only 1 in-flight battery test!
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Old March 26th, 2013, 09:23 PM   #1726
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Pictures of the new containment box which should prevent a possible battery fire to spread further inside the airplane.
Boeing still isn´t sure what caused the battery fires in the past but this solution should enable the 787 fleet to fly again until the real cause is found.

battery = blue
containment box = yellow





On the right you can see the massive cover of the containment box.


SOURCE
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Old March 26th, 2013, 11:59 PM   #1727
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Boeing has already said that it might be a permanent fix since they might not ever find the root causes of both incidents. Both incidents also seem to have different causes, making it even more difficult to pinpoint 1 thing that caused the fires.

Boeing and the battery manufactures will of course look further into it and will keep on developing to make the batteries more stable, but it might forever stay in a box unless a completely stable new Li-Ion battery is developed.

Quote:
Originally Posted by hkskyline View Post
Makes sense. I wouldn't think the FAA will let them get away with only 1 in-flight battery test!
The thing about these flights is that the chance that something goes bad during one of the certification flights is almost zero. There was also just 1 fire during 1 of 1.000s of 787 flights so far (the JAL incident happened on the ground, the ANA in flight). So basically it's just a standard formality flight that is needed for any certification flights that happen constantly when even small changes are made to the overall plane design. Making the 787 fly more then 1 time most likely won't give any information on how the batteries and the containment box actually perform when .

The static tests, where the box is actually tested on what it's supposed to do are probably more important to the FAA. That's the only way to see if it really can protect all the other systems around the batteries that can be damaged when there's a fire (although that didn't happen in both incidents).

But since Boeing and the FAA did several test flights last month with the old batteries, they might want to compare the data from those tests with the results from the upcoming flight. Just to see if there any differences between the batteries, not necessarily big differences but just small differences in temperature and voltage etc. With data from several flights they can of course make better comparisons.
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Old March 27th, 2013, 02:06 PM   #1728
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How does flying test a battery? Shouldn't it be tested by putting it through extremes (voltage, load, temp., etc.) and see what happens to the battery? I am not sure what kind of a meaningful data they are going to get about a battery from flying a plane for a couple of hours.
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Old March 27th, 2013, 05:18 PM   #1729
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I can only presume they are testing in flight to replicate normal operations. Testing to extremes won't show the actual fault as it happened as extremes are not normal working practices. Boeing won't want to open a can of worms if they don't need to.
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Old March 27th, 2013, 08:57 PM   #1730
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As I wrote in my last 2 posts, the new battery and the metal box are tested in the test 787 on the ground. They will push it over the limit to actually see if the box can contain a fire or thermal runaway.
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Old March 28th, 2013, 08:16 AM   #1731
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They already ignited propane in the box to represent the energy release that is triple that of a battery ignition. On the ground of course.
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Old March 29th, 2013, 12:03 PM   #1732
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first commercial flight Polish Dreamliner


source:http://www.facebook.com/photo.php?fb...&type=1&ref=nf
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Old April 1st, 2013, 08:45 AM   #1733
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source:http://www.facebook.com/photo.php?fb...&type=1&ref=nf
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Old April 1st, 2013, 08:53 AM   #1734
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Well, it looks like when the battery issues are resolved, the 787s will resume operations, and new flights will finally begin, especially the "anticipated" Denver—Tokyo flight.
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Old April 1st, 2013, 11:41 PM   #1735
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The ZA272, LN 86, SP-LRC is flying again today, but it's not the battery certification flight yet.

Quote:
787 Line #86 departed Paine Field for routine test flight. Battery certification demo flight to occur in coming days.
https://twitter.com/BoeingAirplanes/...92784251351040
http://flightaware.com/live/flight/B...800Z/KPAE/KMWH
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Old April 2nd, 2013, 08:00 AM   #1736
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[img]http://i50.************/6jltuv.png[/img]

[img]http://i45.************/25sy63c.png[/img]
http://kpae.blogspot.com/

Certification flight in few days. Its looks like SP-LRC will be ready for delivery after certification.
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Old April 2nd, 2013, 11:11 AM   #1737
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I take it SP-LRC is the 1st B787 to receive the modified battery unit...?

Sorry haven't been following the grounding reports...
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Old April 2nd, 2013, 01:00 PM   #1738
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I can't wait to see the 787-9 & -10. I think they will be much better proportioned than the -8. (Which is still a nice looking plane itself)
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Old April 2nd, 2013, 07:00 PM   #1739
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Quote:
Originally Posted by EK413 View Post
I take it SP-LRC is the 1st B787 to receive the modified battery unit...?

Sorry haven't been following the grounding reports...
It's the frame were the new battery unit has been installed for the test flight that should happen this week.


btw, yesterdays test flight was to test a fix for the electrical system and especially an electrical panel that seem to have to been the cause of some of the electrical problems prior to 2 battery failures. The SP-LRC sure is Boeings current flying test frame.
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Old April 3rd, 2013, 01:37 PM   #1740
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First pictures of LN-BKA...







http://www.facebook.com/media/set/?s...7785252&type=1
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