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Search: Posts Made By: hetfield
Showing results 1 to 35 of 39
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Forum: Rumours & News
7th Feb 2013, 13:33
Replies: 2,185
Views: 1,032,228
Posted By hetfield

http://www.mlit.go.jp/jtsb/flash/JA804A_130116-130...

http://www.mlit.go.jp/jtsb/flash/JA804A_130116-130205.pdf

Page 5?
Forum: Rumours & News
7th Feb 2013, 10:06
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@cockney steve Yes, the eight "cells" of the...

@cockney steve

Yes, the eight "cells" of the 787 battery contain each 6 sub-cells in parallel.
Paralleling increases capacity. So each sub-cell has about 11Ah makes roughly the nominated 65Ah....
Forum: Rumours & News
6th Feb 2013, 13:17
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@mikkojuha At least, I don't know Li-Ion...

@mikkojuha

At least, I don't know Li-Ion cells (one cell) which has 65Ah....
Forum: Rumours & News
6th Feb 2013, 09:12
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Yep, some pilots are also engineers with a...

Yep, some pilots are also engineers with a university degree......;)
Forum: Rumours & News
6th Feb 2013, 07:23
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Yes, lead acid can do it, Li-Ion not. In the...

Yes, lead acid can do it, Li-Ion not.

In the 787 batteries each cell-array (8) has 6 cells in parallel.
So, one cell has litlle over 10Ah.
Forum: Rumours & News
4th Feb 2013, 11:25
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@fizz57 It's not that simple, just NOT the...

@fizz57

It's not that simple, just NOT the battery. And this kind of battery isn't also simple at all.

To my knowledge, there are 4 companies involved for 787 batteries :

- GS YUASA (J),...
Forum: Rumours & News
3rd Feb 2013, 12:15
Replies: 2,185
Views: 1,032,228
Posted By hetfield

AP Exclusive: 787 Grounded, but Batteries Can Fly...

AP Exclusive: 787 Grounded, but Batteries Can Fly - ABC News (http://abcnews.go.com/Politics/wireStory/ap-exclusive-787-grounded-batteries-fly-18389906)

I fully agree with Sully.
Forum: Rumours & News
1st Feb 2013, 18:35
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@Taunusflyer It isn't that simple... As...

@Taunusflyer

It isn't that simple...

As long there is just one cell (3.7 Volts) it's not rocket science.

If the voltage demand is higher, e.g. 28 Volts, you need 8 cells.

And there is the...
Forum: Rumours & News
1st Feb 2013, 13:05
Replies: 2,185
Views: 1,032,228
Posted By hetfield

It doesn't have to be lead-acid NiCd and...

It doesn't have to be lead-acid

NiCd and NiMh do a good job.

Reliable, safe, cheap....
Forum: Rumours & News
31st Jan 2013, 12:19
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@SoS I fully agree...:ok:

@SoS

I fully agree...:ok:
Forum: Rumours & News
30th Jan 2013, 19:00
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Völlige Ignoranz, sorry.

Völlige Ignoranz, sorry.
Forum: Rumours & News
30th Jan 2013, 18:23
Replies: 2,185
Views: 1,032,228
Posted By hetfield

BOEING should have ask themselves: "What's...

BOEING should have ask themselves:

"What's wrong with the batteries?"

> 100, each 16.000 USD!!!!!
Forum: Rumours & News
30th Jan 2013, 17:20
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Amen.... Boeing says it will find cause of 787...

Amen....
Boeing says it will find cause of 787 problems, defends batteries - latimes.com (http://www.latimes.com/business/money/la-fi-mo-boeing-earns-787-dreamliner-20130130,0,6984636.story)
Forum: Rumours & News
30th Jan 2013, 07:26
Replies: 2,185
Views: 1,032,228
Posted By hetfield

I fully agree. The two batteries of the 787...

I fully agree.

The two batteries of the 787 have NOTHING to do with that, they are common for all airliners.

- APU start
- Elec Essential backup
Forum: Rumours & News
29th Jan 2013, 09:15
Replies: 2,185
Views: 1,032,228
Posted By hetfield

You are not the only one who wonders why Boeing...

You are not the only one who wonders why Boeing took that risk for the benefit of a few kilogramms....
Forum: Rumours & News
28th Jan 2013, 20:11
Replies: 2,185
Views: 1,032,228
Posted By hetfield

That's totally irrelevant! The Main Bat as...

That's totally irrelevant!

The Main Bat as well as the APU bat f:mad: up!
Forum: Rumours & News
28th Jan 2013, 19:01
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Don't get it:ugh:. It doesn't matter to be...

Don't get it:ugh:.

It doesn't matter to be "unusual".

It matters, is it safe?
Forum: Rumours & News
28th Jan 2013, 18:15
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Exactly. The messenger (BMS) may be shot, if...

Exactly.

The messenger (BMS) may be shot, if one cell :mad: off.
IMHO, wrong place to put in a monitoring unit.

Just have a look to upper left/right with the PCB...
Forum: Rumours & News
28th Jan 2013, 17:45
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Check this (UPS 6): ...

Check this (UPS 6):

http://upload.wikimedia.org/wikinews/en/a/a5/UPS_Flight_6.jpg

and this, UPS 1307

http://evworld.com/press/N748UP_DC-8_7.jpg
Forum: Rumours & News
28th Jan 2013, 12:13
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Exclusive: Japan eased safety standards ahead of...

Exclusive: Japan eased safety standards ahead of Boeing 787 rollout | Reuters (http://www.reuters.com/article/2013/01/28/us-boeing-dreamliner-japan-idUSBRE90R05C20130128)
Forum: Rumours & News
27th Jan 2013, 10:07
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Well, if the 787 FCOM is not identical with the...

Well, if the 787 FCOM is not identical with the reality it's haste and waste IMHO.
Forum: Rumours & News
26th Jan 2013, 20:15
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@Turin That's very interesting, indeed......

@Turin


That's very interesting, indeed...

Another change in the fast (haste makes waste) development of the nightmareliner?
Forum: Rumours & News
26th Jan 2013, 14:48
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@avionista Look.... #415

@avionista

Look.... #415
Forum: Rumours & News
26th Jan 2013, 11:28
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Lithium cobalt oxide - Wikipedia, the free...

Lithium cobalt oxide - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Lithium_cobalt_oxide)

American Manganese Inc.: Boeing 787 Dreamliner Lithium Ion Batteries Based on Cobalt Not...
Forum: Rumours & News
26th Jan 2013, 10:46
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Albeit it's not possible in the moment anyway, a...

Albeit it's not possible in the moment anyway, a 2nd battery expert besides Dr. Olaf Wollersheim (Germany) wouldn't fly with 787...



Boeing 787 Dreamliner's burnt out battery 'spewed out molten...
Forum: Rumours & News
26th Jan 2013, 09:13
Replies: 2,185
Views: 1,032,228
Posted By hetfield

@Mark thx for the link! Very interesting...

@Mark

thx for the link!
Very interesting...
Forum: Rumours & News
24th Jan 2013, 13:41
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Dr. Olaf Wollersheim: »Den Schaden zu...

Dr. Olaf Wollersheim:

»Den Schaden zu beheben, könnte lange dauern« – elektroniknet...
Forum: Rumours & News
22nd Jan 2013, 10:37
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Let's assume the 200lb additional weight of NiCd...

Let's assume the 200lb additional weight of NiCd batteries instead of LiIon are realistic, IMHO the trade of for extremely more safety is out of question.
Forum: Rumours & News
21st Jan 2013, 14:14
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Sad, people forget fast.... UPS 1307 ...

Sad, people forget fast....

UPS 1307
http://www.ntsb.gov/doclib/reports/2007/AAR0707.pdf

UPS 6...
Forum: Rumours & News
21st Jan 2013, 12:39
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Securaplane makes the chargers for 787..... ...

Securaplane makes the chargers for 787.....
...
Forum: Rumours & News
21st Jan 2013, 12:24
Replies: 2,185
Views: 1,032,228
Posted By hetfield

glad rag Don't worry, if a battery :mad: up,...

glad rag

Don't worry, if a battery :mad: up, the relevant charger will not affect its supply bus.
Forum: Rumours & News
21st Jan 2013, 11:52
Replies: 2,185
Views: 1,032,228
Posted By hetfield

There are two batteries per plane, is that...

There are two batteries per plane, is that right?
Yes

One for the APU and one for the rest of the plane's electrical requirements?
Yes

The various battery problems encountered in the 787...
Forum: Rumours & News
21st Jan 2013, 09:22
Replies: 2,185
Views: 1,032,228
Posted By hetfield

RR NDB check this Li-polymer Battery:...

RR NDB

check this

Li-polymer Battery: Substance or Hype? (http://batteryuniversity.com/learn/article/the_li_polymer_battery_substance_or_hype)

To my knowledge, the 787 LiIon are cobalt...
Forum: Rumours & News
20th Jan 2013, 18:19
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Yes, but both are popular for...

Yes, but both are popular for overheat/fire....like we all know now!
Forum: Rumours & News
20th Jan 2013, 16:34
Replies: 2,185
Views: 1,032,228
Posted By hetfield

Do you remember the 747F Dubai(?) crash? ...

Do you remember the 747F Dubai(?) crash?


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