Posted by Centex Farmall on January 21, 2013 at 21:33:09 from (188.8.131.52):
In Reply to: 787 and Li-ion posted by George Marsh on January 20, 2013 at 09:03:08:
My little (25 ton) airplane uses Ni-Cads, two of them right in the nose. They're outside the pressure vessel and get to go from soaking on a 120 degree ramp in DFW to -50 or -60 Centigrade in about half an hour and do that several times a day in the summer.
They seldom give trouble and are supposed to give me 40 to 45 minutes of power to the essential things while I'm in the air, though I've never had to test that out for myself. A battery overtemp condition is a big deal and on our "short list" of baddest of the bad emergencies.
The Lithiom Ion batteries are a big deal in aviation in that they (FAA) are looking to severely restrict their transport, banning them on cargo shipments. They're lighter for the same energy capacity, hence Boeing using them on the 787. If the membranes in the battery get damaged they can make their own thermal runaway. These are teething problems and not surprising considering the technology leap in the 787.
Fast Shipping! Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.