On 1/25/20 2:54 AM, Martin Gregorie wrote:
On Fri, 24 Jan 2020 20:27:45 -0700, kinsell wrote:

On 1/24/20 8:07 PM, wrote:
On Friday, January 24, 2020 at 12:21:41 PM UTC-5, kinsell wrote:
On 1/24/20 9:58 AM, Steve Leonard wrote:
Good to run those tests at night so you can see the fire sooner.


Good point. But if the main battery ever lit up (8200 lbs of
lithium-cobalt) it ought to make quite a bonfire.

Somehow flying that thing makes me think of the guy riding the H-bomb
in Doctor Strangelove.

I do hope they find safer battery chemistries before long. LiFePO4 is
much safer, but the energy density is even poorer and the cost even
higher.


Good analogy. That was Slim Pickens, wasn't it?

Someone at Eviation said the thing is (or was) basically a battery with
a picture of an airplane painted on it. I wouldn't have guessed they
could get 8200 lbs of lithium battery in there and still have room for
px. It's am ambitious project, 600 mile range, but at some point
reality starts to rear its ugly head.

With a big motor on each wingtip (in the photos they look bigger than the
rear motor) I do wonder about its handling if one of the wingtip engines
fails/gets hit by a goose, etc., or do they just shut down the other
wingtip motor and land wherever possible.




Slick presentation from Paris Air Show he

https://simpleflying.com/eviation-al...tric-aircraft/

Quick answer is they intend to shut down opposite motor in case of
trouble with one wingtip. Supposedly they can takeoff on just the rear
after V2.

Like Harbour Air, making claims of really fast recharge times. Fly for
two hours, recharge in one. Good way to fry your batteries, maybe this
thing uses copious quantities of snake oil for cooling.

Harbour Air CEO was quoted in one of the articles as saying there are no
constraints in how fast you charge lithium batteries, just pump in more
current if you want a faster charge. I wonder if these guys actually
believe their own hype? Scary.