I can't begin to name all the reasons why the batteries are needed. But I will say a primary (the primary?) reason would be to keep the cockpit and all the critical flying mechanics working if there is loss of power from the engines.
Loss of power could happen for several reasons. There could be a malfunction and the engines stop; the generators could go bad; something else in the electrical system (circuit breaker?) could go bad. And so on. Regardless of why, you still want to be able to control and fly the plane and try to land safely! (maybe in the potomac?) Peri -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Lawrence Winiarski Sent: 17 January, 2013 3:49 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Lithium ion type chemistry in 787 fire When/why do you need the batteries anyway? Only when the engines are stopped right? i.e. emergency? Not to make light of the situation, but it would be ironic if the emergency battery system caused the plane to go down. You really really really really want this to be right... Otherwise you might be better to leave out the batteries entirely and make damn sure the engines never failed. Sounds like they are right to ground them for this. If you had several well separated smaller battery packs, at least you'd be assured that no single battery failure could cause a fire so big as to be unmanageable. Might even provide a way for them to literally fall out of the airplane if they got too hot. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130117/8666346b /attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
