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Search: Posts Made By: green granite
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Forum: Rumours & News
24th Apr 2013, 16:10
Replies: 2,185
Views: 1,032,226
Posted By green granite

Some for 2012 here...

Some for 2012 here (http://finance.yahoo.com/q/bs?s=ba)

Total Assets 88,896,000 Total Liabilities 83,029,000
Forum: Rumours & News
28th Mar 2013, 12:01
Replies: 2,185
Views: 1,032,226
Posted By green granite

Thanks for clarifying that TURIN, it's been about...

Thanks for clarifying that TURIN, it's been about 50 years since I did any work on Aircraft and that was a military Comet 3
Forum: Rumours & News
28th Mar 2013, 09:18
Replies: 2,185
Views: 1,032,226
Posted By green granite

Do you have loads of Ni-Cad batteries being...

Do you have loads of Ni-Cad batteries being swapped out because people leave the towing (or similar) switch on? If not why not?
Forum: Rumours & News
26th Mar 2013, 14:47
Replies: 2,185
Views: 1,032,226
Posted By green granite

Or perhaps a compromise could be reached for the...

Or perhaps a compromise could be reached for the FAA to say OK so you have done some substantial changes to the battery and given that if it should fail the box will prevent it from setting fire to...
Forum: Rumours & News
22nd Mar 2013, 11:13
Replies: 2,185
Views: 1,032,226
Posted By green granite

That would be easy enough to do, empty container...

That would be easy enough to do, empty container with some dye in it in the rear compartment, with an inlet valve. Pressurise it with liquid nitrogen and check the valve releases at the right...
Forum: Rumours & News
20th Mar 2013, 08:13
Replies: 2,185
Views: 1,032,226
Posted By green granite

There are millions of Li-ion batteries being...

There are millions of Li-ion batteries being recharged perfectly safely every day in 'cheap' stuff such as phones, laptops, tablets etc with an extremely low failure rate (thermal runaway wise) so...
Forum: Rumours & News
18th Mar 2013, 17:57
Replies: 2,185
Views: 1,032,226
Posted By green granite

One would also hope there would be a pressure...

One would also hope there would be a pressure gauge on the box as the line of last resort.
Forum: Rumours & News
14th Mar 2013, 08:18
Replies: 2,185
Views: 1,032,226
Posted By green granite

So, are Boeing going to have to prove that the...

So, are Boeing going to have to prove that the new container will work at 40,000ft empirically, or will the back of a fag packet calculations be accepted?

The thought of a trial set up to...
Forum: Rumours & News
5th Mar 2013, 13:12
Replies: 2,185
Views: 1,032,226
Posted By green granite

Sorry fgrieu but it's still behind a pay wall.

Sorry fgrieu but it's still behind a pay wall.
Forum: Rumours & News
27th Feb 2013, 11:14
Replies: 2,185
Views: 1,032,226
Posted By green granite

1) If the battery is isolated the A/C does not...

1) If the battery is isolated the A/C does not need to be powered down at all.

2)The battery would only need changing if used, capacity indicators are not rocket science.



Cheaper for...
Forum: Rumours & News
27th Feb 2013, 09:15
Replies: 2,185
Views: 1,032,226
Posted By green granite

Presumably once the APU is running and or ground...

Presumably once the APU is running and or ground power is on, then the batteries are no longer needed, except in an emergency, and could be isolated.
So why not treat them as primary cells and do...
Forum: Rumours & News
24th Feb 2013, 09:16
Replies: 2,185
Views: 1,032,226
Posted By green granite

The question is of course, would you pilots be...

The question is of course, would you pilots be prepared to fly it with Boeing's 'fix'? I would avoid it as a passenger, as I did the DC10.
Forum: Rumours & News
19th Feb 2013, 14:16
Replies: 2,185
Views: 1,032,226
Posted By green granite

You also have to convince the Insurance...

You also have to convince the Insurance companies, otherwise premiums might suddenly become uneconomic.
Forum: Rumours & News
14th Feb 2013, 20:48
Replies: 2,185
Views: 1,032,226
Posted By green granite

To say nothing of the huge current they would...

To say nothing of the huge current they would have to be capable of switching, I think you would need an OCB to do that job.
Forum: Rumours & News
14th Feb 2013, 12:49
Replies: 2,185
Views: 1,032,226
Posted By green granite

Since the discharge curve for lead-acid and...

Since the discharge curve for lead-acid and Li-Ion batteries are very different Peukert's law would be much nearer to being negligible for Li-Ion, and if the batteries are allowed to rise in...
Forum: Rumours & News
14th Feb 2013, 11:06
Replies: 2,185
Views: 1,032,226
Posted By green granite

Are you really saying that the basic circuitry...

Are you really saying that the basic circuitry needed to refuel one tank draws 260 Amps?
Forum: Rumours & News
11th Feb 2013, 09:51
Replies: 2,185
Views: 1,032,226
Posted By green granite

cwatters, the 75Ah figure is the nominal...

cwatters, the 75Ah figure is the nominal capacity, ie. right down to total discharge, 65Ah is the usable capacity ie. down to immediately before the 'knee' part of the curve.
Forum: Rumours & News
8th Feb 2013, 15:22
Replies: 2,185
Views: 1,032,226
Posted By green granite

Without extra instrumentation I don't see what...

Without extra instrumentation I don't see what they are going to learn, unless of course there was no testing of that part of the system in the original flight test programme.
Actually it would be...
Forum: Rumours & News
8th Feb 2013, 14:24
Replies: 2,185
Views: 1,032,226
Posted By green granite

Sorry HazelNuts39 I think we are at cross...

Sorry HazelNuts39 I think we are at cross purposes here possibly due to my use of the word 'incident' to mean an individual occurrence or event out side of the normal operating parameters of the...
Forum: Rumours & News
8th Feb 2013, 12:25
Replies: 2,185
Views: 1,032,226
Posted By green granite

I wonder how many test flights will need to take...

I wonder how many test flights will need to take place before an incident of any sort happens, or, conversely, when do you stop if no events happen.
Forum: Rumours & News
7th Feb 2013, 13:50
Replies: 2,185
Views: 1,032,226
Posted By green granite

have a read of: Lithium Battery...

have a read of:

Lithium Battery Manufacturing (http://www.mpoweruk.com/battery_manufacturing.htm)

and:

Materials and Processing for lithium-ion Batteries...
Forum: Rumours & News
6th Feb 2013, 08:50
Replies: 2,185
Views: 1,032,226
Posted By green granite

Well said Turin, after all pilots know how to fly...

Well said Turin, after all pilots know how to fly aircraft, why should they also be an authority on electronics and batteries?

There appears to be some confusion over sub-cells, they are only...
Forum: Rumours & News
19th Jan 2013, 07:41
Replies: 2,185
Views: 1,032,226
Posted By green granite

To be able to charge a battery from a circuit...

To be able to charge a battery from a circuit powered by that battery then you would have invented perpetual motion, aircraft batteries, like car batteries, are only there to power circuits until the...
Showing results 1 to 23 of 23


 
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