I've been a member of aviation standards committees, and the quality of the members is similar. The best engineers from multiple companies come together, along with hundreds of years of combined experience. The battery standards committee was across the hall from ours one time. Theirs was much more heated. These standards are indeed there for a reason, and based on real world experience. People from the NTSB, Transport Canada, and similar agencies also attend. They have investigated many accidents and want to make sure what went wrong and killed people does not happen again. They, in my experience, are some of the sharpest people I have met and worked with. I had long talks with the folks that investigated Swissair 111. That is one reason I am so careful with electrical installations, at home and even in our RV, which has 400 Ah of LifePO4s under where we sleep.
I believe that about a 20 Ah LiFePO4 is about the largest that can be put in your carryon. I have several smaller ones. One advantage to having batteries in your carryon is that you will not be selected to put the carryon in the luggage compartment if the overheads are full. Tell them there are lithium batteries in there and they will select other luggage. 73, Mark W7MLG On Tue, Jun 28, 2022 at 2:29 AM Jim Brown <j...@audiosystemsgroup.com> wrote: > On 6/28/2022 1:46 AM, Geert Jan de Groot wrote: > > And if you feel otherwise and know it all better - it's a free world and > > everyone has an opinion! - then I kindly ask you to identify what flight > > you will be on so I will take the next flight, thank you. > > All of your post is well said, Jan. We have the right to our opinion, > but we don't have the right to endanger others by acting out on the > basis of our ignorance. > > For nearly 40 I've been a member of the Standards Committee of the > Audio Engineering Society, and lead author our Standards on EMC. I can > report that all of our Standards are based on Applied Science, and the > result of serious engineers who are practitioners in a broad range of > pro audio -- broadcast, recording, live sound -- all with a solid > engineering grounding. Those lacking that background, or with "an > agenda," or to be unwilling to yield to others who know more about an > issue, are quickly sent to the back benches. And all of us have an > excellent BS filter. The goal is simple -- write Standards that make > systems WORK, in the REAL WORLD. > > One of the things that design professionals from different engineering > disciplines do in design meetings is play "what if" scenarios to > evaluate design decisions. A prime example in the real world I've often > cited is, the design team of the Fukushima nuclear reactor failing to > ask, or failing to have the imagination or education to come up with > possible answers to the question, "What Could Possibly Go Wrong With > Putting Emergency Power Generators in the basement?" In 2011, Mother > Nature answered rather emphatically that question that should have been > asked or satisfactorily resolved, but wasn't. Note that this is an > example to prove a concept, not an "attack" on anyone. I've been in lots > of design meetings, and ain't nobody perfect. > > 73, Jim K9YC > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to marklgoldb...@gmail.com > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
