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Search: Posts Made By: Machaca
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Forum: Tech Log
12th Apr 2013, 05:48
Replies: 1,100
Views: 261,065
Posted By Machaca

It is my understanding both transcripts and...

It is my understanding both transcripts and videos of all the sessions will be available next week on the NTSB website.
Forum: Tech Log
11th Apr 2013, 21:21
Replies: 1,100
Views: 261,065
Posted By Machaca

Before glibly commenting, I recommend studying...

Before glibly commenting, I recommend studying today's presentations at the NTSB's Forum on Lithium Ion Batteries in Transportation:


Panel One

Introduction to Batteries and Li-Ion Cells...
Forum: Tech Log
5th Apr 2013, 06:10
Replies: 1,100
Views: 261,065
Posted By Machaca

Boeing says...

Boeing says (http://www.boeing.com/commercial/aeromagazine/articles/2012_q3/2/):




UTC photo shows it's a good sized lump:
...
Forum: Tech Log
15th Mar 2013, 00:36
Replies: 1,100
Views: 261,065
Posted By Machaca

Gentlemen - this is Tech Log. Hyperbole and...

Gentlemen - this is Tech Log.

Hyperbole and speculation belong in the R&N thread.

Thank you!
Forum: Tech Log
12th Feb 2013, 03:09
Replies: 1,100
Views: 261,065
Posted By Machaca

FlightPathOBN, Areobat, Lyman -- It appears the...

FlightPathOBN, Areobat, Lyman -- It appears the questions are coming full circle.

I suggest a re-read of the thread as several expert contributors have previously addressed these supposed new...
Forum: Tech Log
10th Feb 2013, 18:45
Replies: 1,100
Views: 261,065
Posted By Machaca

Lyman: FALSE. No such reduction ever...

Lyman:


FALSE. No such reduction ever took place.

Posting nonsense incorrectly extrapolated from opinions collected by journalists doesn't lead to a better understanding.

There is an...
Forum: Tech Log
10th Feb 2013, 17:10
Replies: 1,100
Views: 261,065
Posted By Machaca

Lyman: FALSE. That standard does...

Lyman:


FALSE.

That standard does not apply to the battery system, as it is not critical for flight.

I urge contributors to this thread to please refrain from posting unfounded hyperbole....
Forum: Tech Log
7th Feb 2013, 21:09
Replies: 1,100
Views: 261,065
Posted By Machaca

Ly[ing]man: Absolutely beyond...

Ly[ing]man:






Absolutely beyond belief. Aramid and CF don't burn!

You seem hell bent on emulating your namesake, Lyman Gilmore (http://www.flyingmachines.org/gilmore.html).
Forum: Tech Log
7th Feb 2013, 20:49
Replies: 1,100
Views: 261,065
Posted By Machaca

For a better understanding (and hopefully avoid...

For a better understanding (and hopefully avoid endless conjecture) of the prior art vs the new art of packet cell construction, here's a glimpse into patent 7629077 awarded to some smart lads at...
Forum: Tech Log
6th Feb 2013, 16:38
Replies: 1,100
Views: 261,065
Posted By Machaca

Lyman To assert this you must already...

Lyman


To assert this you must already know exactly the mechanisms of the failures. :ugh:

Regulations cannot and will not prevent an occasional sub-par component from being installed onto an...
Forum: Tech Log
6th Feb 2013, 06:55
Replies: 1,100
Views: 261,065
Posted By Machaca

USMCProbe: The fire crew working the JAL...

USMCProbe:


The fire crew working the JAL 787 at Boston not only cut the wires, they ripped out some of the aluminum support and tore the battery box from its mounts:
...
Forum: Tech Log
3rd Feb 2013, 04:16
Replies: 1,100
Views: 261,065
Posted By Machaca

NTSB stated Feb 1:

NTSB stated Feb 1:
Forum: Tech Log
28th Jan 2013, 00:10
Replies: 1,100
Views: 261,065
Posted By Machaca

Hopefully the ANA circuit boards are in better...

Hopefully the ANA circuit boards are in better condition and yield clues as to why the protections failed.
Forum: Tech Log
27th Jan 2013, 23:56
Replies: 1,100
Views: 261,065
Posted By Machaca

NTSB Update on JAL Boeing 787 Battery Fire...

NTSB Update on JAL Boeing 787 Battery Fire Investigation (http://www.ntsb.gov/news/2013/130127.html)
Forum: Tech Log
27th Jan 2013, 22:17
Replies: 1,100
Views: 261,065
Posted By Machaca

37 on the upper harness. The lower harness...

37 on the upper harness.

The lower harness (narrower connector on lower left) likely runs to a temp sensor under each cell.
Forum: Tech Log
26th Jan 2013, 17:57
Replies: 1,100
Views: 261,065
Posted By Machaca

The individual cells of the incident batteries...

The individual cells of the incident batteries have been subjected to CT scans, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and physical inspection after being...
Forum: Tech Log
26th Jan 2013, 16:32
Replies: 1,100
Views: 261,065
Posted By Machaca

The Chicago Tribune reports...

The Chicago Tribune reports (http://articles.chicagotribune.com/2013-01-25/business/chi-dreamliner-circuit-boards-012513_1_lithium-ion-gs-yuasa-corp-main-battery):

Burnt circuit boards snag Japan...
Forum: Tech Log
26th Jan 2013, 16:15
Replies: 1,100
Views: 261,065
Posted By Machaca

saptzae - thank you for your excellent...

saptzae - thank you for your excellent contributions! :D:D:D
Forum: Tech Log
23rd Jan 2013, 18:03
Replies: 1,100
Views: 261,065
Posted By Machaca

The Chicago Tribune reports...

The Chicago Tribune reports (http://www.chicagotribune.com/business/sns-rt-us-boeing-dreamlinerbre90m0zo-20130123,0,4295551.story):
Forum: Tech Log
22nd Jan 2013, 02:11
Replies: 1,100
Views: 261,065
Posted By Machaca

The battery in the ANA aircraft was replaced in...

The battery in the ANA aircraft was replaced in October, so there is a greater chance of having cells from the same production batch in both.
Forum: Tech Log
22nd Jan 2013, 01:43
Replies: 1,100
Views: 261,065
Posted By Machaca

The worse-case scenario -- an in-flight battery...

The worse-case scenario -- an in-flight battery meltdown -- did occur on the ANA aircraft and the safety systems all performed as designed to allow a safe landing and pax to deplane.
...
Forum: Tech Log
19th Jan 2013, 17:07
Replies: 1,100
Views: 261,065
Posted By Machaca

787 Batteries and Chargers - Part 1

The Washington Post reports...
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