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Battery power to weight ratio.
Rick Hole
I am wondering about the talk of banning lithium batteries from air shipment
due to fire hazard. But I haven't researched the issue, just bringing it up to encourage someone else to do it for me :-) Having a battery go up in flames could make for an exciting flight. Rick
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Isaksson Roger <scratchdeeper@...>
If an issue was worth posting it must be worth researching, instead we got a one
liner posing the hazards, but no research to back it up. On top of it all, someone else is suppose to do the research job. Let me pose a few others, on the same theme, that follows the same line of logic. Epoxy will eventually deteriorate, it will make a hell of a hillarious flight when the wings comes off....but I let you do the research. All wood props will eventually disintegrate in a poff, you better have a freeway clear of cars when that happens,....if your engine still is there,.....but I let you do the research. So here we have knowledge based only on 5 seconds snippets from newsmedia regarding batteries, as the basis for an opinion about a possible in flight disaster, ande posed as a fact. Not to mention that this was an issue with the first generation LitIon batteries, not to mention that this was another set of batteries for small electronic appliances, not to mention that the supplier and the manufacturing technique was looked over and corrected, not to mention that bigger units are in use daily, with no ill effects, and so on. The only result such an approach will do is......just by the fact that it is posed as a danger, and then leave the board with a one liner, may very well inprint on the general flight community the idea that Lithium Ion batteries WILL mean an inflight fire, and some may based on that statement, very well not approach the subject, and Lithium Ion batteries will not be pursued. Let me turn this around and ask you a question. Do you still beat your wife? You see, it doesnt matter what you answer now, you will be wrong either way, because the idea that you are, or have been beating your wife, is assumed. I just posed the idea that you are beating your wife, and ran out on it, but leaving the idea behind. ....just as you left, with posing the idea that in flight fires are coming your way, if you are using Litium Ion Batteries. Extraordinatry claims demands extraordianry proof, so, while you are not expected to be an expert on the subject, at least do some basic research on it first before you toss out statements of that nature. If we find that Hydrogen would be a feasible way to power our aircrafts, ....please don't come back with a one liner like......-"Be careful....remember Hindenburg" Roger ________________________________ From: Rick Hole <r.hole@...> To: Q-LIST@... Sent: Wed, October 6, 2010 7:04:34 PM Subject: [Q-LIST] Battery power to weight ratio. I am wondering about the talk of banning lithium batteries from air shipment due to fire hazard. But I haven't researched the issue, just bringing it up to encourage someone else to do it for me :-) Having a battery go up in flames could make for an exciting flight. Rick [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
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I believe that is related to pallets of batteries in the cargo hold, not
toggle quoted messageShow quoted text
your spare laptop battery. Charlie
In a message dated 10/6/2010 8:04:45 P.M. Mountain Daylight Time,
r.hole@... writes: I am wondering about the talk of banning lithium batteries from air shipment due to fire hazard. But I haven't researched the issue, just bringing it up to encourage someone else to do it for me :-) Having a battery go up in flames could make for an exciting flight. Rick
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John Loram <johnl@...>
As a EE that has been designing battery operated electronic instrumentation
for forty years, I find battery technology endlessly fascinating, but it's wildly off topic on this forum. May I suggest that the conversation be moved to some other forum, such as ThunderSky, the group "for exchanging information and experience on large lithium-ion batteries. (there are several other battery groups)" thanks, -john- www.loram.org _____ From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of Isaksson Roger Sent: Wednesday, October 06, 2010 11:01 PM To: Q-LIST@... Subject: Re: [Q-LIST] Battery power to weight ratio. If an issue was worth posting it must be worth researching, instead we got a one liner posing the hazards, but no research to back it up. On top of it all, someone else is suppose to do the research job. Let me pose a few others, on the same theme, that follows the same line of logic. Epoxy will eventually deteriorate, it will make a hell of a hillarious flight when the wings comes off....but I let you do the research. All wood props will eventually disintegrate in a poff, you better have a freeway clear of cars when that happens,....if your engine still is there,.....but I let you do the research. So here we have knowledge based only on 5 seconds snippets from newsmedia regarding batteries, as the basis for an opinion about a possible in flight disaster, ande posed as a fact. Not to mention that this was an issue with the first generation LitIon batteries, not to mention that this was another set of batteries for small electronic appliances, not to mention that the supplier and the manufacturing technique was looked over and corrected, not to mention that bigger units are in use daily, with no ill effects, and so on. The only result such an approach will do is......just by the fact that it is posed as a danger, and then leave the board with a one liner, may very well inprint on the general flight community the idea that Lithium Ion batteries WILL mean an inflight fire, and some may based on that statement, very well not approach the subject, and Lithium Ion batteries will not be pursued. Let me turn this around and ask you a question. Do you still beat your wife? You see, it doesnt matter what you answer now, you will be wrong either way, because the idea that you are, or have been beating your wife, is assumed. I just posed the idea that you are beating your wife, and ran out on it, but leaving the idea behind. ....just as you left, with posing the idea that in flight fires are coming your way, if you are using Litium Ion Batteries. Extraordinatry claims demands extraordianry proof, so, while you are not expected to be an expert on the subject, at least do some basic research on it first before you toss out statements of that nature. If we find that Hydrogen would be a feasible way to power our aircrafts, ....please don't come back with a one liner like......-"Be careful....remember Hindenburg" Roger ________________________________ From: Rick Hole <r.hole@... <mailto:r.hole%40ieee.org> > To: Q-LIST@... <mailto:Q-LIST%40yahoogroups.com> Sent: Wed, October 6, 2010 7:04:34 PM Subject: [Q-LIST] Battery power to weight ratio. I am wondering about the talk of banning lithium batteries from air shipment due to fire hazard. But I haven't researched the issue, just bringing it up to encourage someone else to do it for me :-) Having a battery go up in flames could make for an exciting flight. Rick
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Isaksson Roger <scratchdeeper@...>
Yes the batteries in them selves, are a different topic, yes, but batteries as
a possible substitute as a weight saving factor in an airplane, I would say, is spot on, as , in this case, the possible weight saving is substantial. From that perspective, you might have something to ad, like , if there are any possible differences in how Lead Batteries compared with Lithium Ion batteries are acting and behaving with an alternator as a charger, , as most have experience of Litium Ion batteries from very small electronic appliance batteries, that require only a very small plug in type charging device, that gives a very steady current. The power to weight ratio is the appealing issue here, and with a man with your experience in batteries, if you could please tell, a couple of pro's and con's for people considering a straight substitute from a Lead Acid battery to a Litium Ion battery. I am sorry that a few bloggers started to go off topic on this subject like ......-"Don't wear clownshoes in a minefield"....and ...."Don't pet a burning dog"....."it's dangerous".......and then added links to clownshoes, minefields and burning dogs. Roger ________________________________ From: John Loram <johnl@...> To: Q-LIST@... Sent: Thu, October 7, 2010 11:34:38 AM Subject: RE: [Q-LIST] Battery power to weight ratio. As a EE that has been designing battery operated electronic instrumentation for forty years, I find battery technology endlessly fascinating, but it's wildly off topic on this forum. May I suggest that the conversation be moved to some other forum, such as ThunderSky, the group "for exchanging information and experience on large lithium-ion batteries. (there are several other battery groups)" thanks, -john- www.loram.org _____ From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of Isaksson Roger Sent: Wednesday, October 06, 2010 11:01 PM To: Q-LIST@... Subject: Re: [Q-LIST] Battery power to weight ratio. If an issue was worth posting it must be worth researching, instead we got a one liner posing the hazards, but no research to back it up. On top of it all, someone else is suppose to do the research job. Let me pose a few others, on the same theme, that follows the same line of logic. Epoxy will eventually deteriorate, it will make a hell of a hillarious flight when the wings comes off....but I let you do the research. All wood props will eventually disintegrate in a poff, you better have a freeway clear of cars when that happens,....if your engine still is there,.....but I let you do the research. So here we have knowledge based only on 5 seconds snippets from newsmedia regarding batteries, as the basis for an opinion about a possible in flight disaster, ande posed as a fact. Not to mention that this was an issue with the first generation LitIon batteries, not to mention that this was another set of batteries for small electronic appliances, not to mention that the supplier and the manufacturing technique was looked over and corrected, not to mention that bigger units are in use daily, with no ill effects, and so on. The only result such an approach will do is......just by the fact that it is posed as a danger, and then leave the board with a one liner, may very well inprint on the general flight community the idea that Lithium Ion batteries WILL mean an inflight fire, and some may based on that statement, very well not approach the subject, and Lithium Ion batteries will not be pursued. Let me turn this around and ask you a question. Do you still beat your wife? You see, it doesnt matter what you answer now, you will be wrong either way, because the idea that you are, or have been beating your wife, is assumed. I just posed the idea that you are beating your wife, and ran out on it, but leaving the idea behind. ....just as you left, with posing the idea that in flight fires are coming your way, if you are using Litium Ion Batteries. Extraordinatry claims demands extraordianry proof, so, while you are not expected to be an expert on the subject, at least do some basic research on it first before you toss out statements of that nature. If we find that Hydrogen would be a feasible way to power our aircrafts, ....please don't come back with a one liner like......-"Be careful....remember Hindenburg" Roger ________________________________ From: Rick Hole <r.hole@... <mailto:r.hole%40ieee.org> > To: Q-LIST@... <mailto:Q-LIST%40yahoogroups.com> Sent: Wed, October 6, 2010 7:04:34 PM Subject: [Q-LIST] Battery power to weight ratio. I am wondering about the talk of banning lithium batteries from air shipment due to fire hazard. But I haven't researched the issue, just bringing it up to encourage someone else to do it for me :-) Having a battery go up in flames could make for an exciting flight. Rick [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
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