This is the path I intend to take with my hybrid for a very light plane. My math says it is practical. But the weight of the battery(s) I plan to use is small compared to a pure electric plane that most people will fly.I am still a fan of "controlled burning" I do have made an kiln for aluminum melting - And it was insulated using 35 mm thick plate, to the level - that you can place bare hand on other side to molten aluminium.
Three fires that we know of. Only one could be traced to a battery pack that had been damaged. All appear to be related to manufacturing processes that allowed metallic swarf to migrate down among the pouch cells and eventually penetrate them. They have changed their processes to prevent recurrences, but it is still a point of concern.I would like to remember you that there is 200 sailplanes equipped with the FES(front electric sustainer) that has the battery in the fuselage and they had only a couple of fires...
It is no relevant, nor cooling istself. Battery is not ideal, it have some internal resistance. And by taking 100 amps from it, it will have some i^2*r losses. And some internal layers - can be hotter and will burn it...There are four main reasons why battery can burn.
Point 3) and 4) In modern electric car is used battery temperature management.
I already used , most of my 9 lives ; if it is a safer alternative, then...
I think your best bet will be with using a battery with iron phosphate as a cathode material, as these are among the safest lithium packs in terms of thermal safety. You sacrifice energy density of course, but you'll drastically reduce the chances of a fire. Couple that with a good battery regulator should make things much safer as well.
In case of fire, jettison the pod. Instead of a parachute, have the pod deploy a hot air balloon envelope so it will stay aloft until it cools down, or is over an ocean and can be dropped.I still go back to those baggage pods feel ideal for this scenario right now -side bonus of being able to swap pods military style and keep flying if its a nice day.
I like this outside the box thinking.In case of fire, jettison the pod. Instead of a parachute, have the pod deploy a hot air balloon envelope so it will stay aloft until it cools down, or is over an ocean and can be dropped.
That plan certainly wouldn't work for anyone flying electric aircraft in Ozzie at the moment. Actually one could probably have to add a fire ban check to ones pre-flight planning and just be prepared not to fly in summer.You guys like stressing over things for days longer than needed?
No I'm in the straight down camp. But i fly over rural canada mostly