BeechTalk - BT - Eviation. Electric plane. 650nm $3-$5 mil. Please

Username Protected · **Posted:** 21 Nov 2018, 18:15

https://www.bloomberg.com/news/articles ... final-push

Username Protected · **Posted:** 21 Nov 2018, 19:32

Username Protected wrote:

https://www.bloomberg.com/news/articles/2018-11-12/pioneering-electric-plane-needs-200-million-for-final-push

Personally I think a hybrid wins the race. BWTHDIK

Username Protected · **Posted:** 21 Nov 2018, 19:37

Can’t figure out how to link to it, but on the Diamond Aircraft Instagram they had a picture of a DA40 with a Diesel engine in the nose powered two electric Moro’s on pylons. It looked slick as snot. Apparently can run 30min on battery alone, rest on the diesel.

Edit: here is a link to it: https://www.flyingmag.com/diamond-da40- ... type-flies

Username Protected · **Posted:** 21 Nov 2018, 20:02

Username Protected wrote:

https://www.bloomberg.com/news/articles/2018-11-12/pioneering-electric-plane-needs-200-million-for-final-push

Personally I think a hybrid wins the race. BWTHDIK

Username Protected · **Posted:** 22 Nov 2018, 09:55

Love the V-tail but, that would be quite the thrust imbalance if you lost one of the motors (they appear to be on the tips of the wings).

Username Protected · **Posted:** 22 Nov 2018, 10:28

What might be interesting is a hybrid push-pull twin. Electric motor in the rear for additional takeoff power and limp home mode

Username Protected · **Posted:** 22 Nov 2018, 17:40

Username Protected wrote:

You might be right but who is going to drop that kind of coin for 650 miles? I sure wouldnt want to be first generation.

Electrically powered 9 pax, 600 miles plane would be a great deal for short hop commuters, like Cape Air or Mokulele. Heck, they could do well with 9 pax, 200 miles plane if it can be topped off via supercharger in 1/2 hr between the flights.

Username Protected · **Posted:** 22 Nov 2018, 18:32

Username Protected wrote:

You might be right but who is going to drop that kind of coin for 650 miles? I sure wouldnt want to be first generation.

Electrically powered 9 pax, 600 miles plane would be a great deal for short hop commuters, like Cape Air or Mokulele. Heck, they could do well with 9 pax, 200 miles plane if it can be topped off via supercharger in 1/2 hr between the flights.

Username Protected · **Posted:** 22 Nov 2018, 20:21

Here is a report about a recent solid state flight at MIT. https://www.youtube.com/watch?time_cont ... oB6qu5dcCw

Username Protected · **Posted:** 22 Nov 2018, 20:32

Good pickup on the OEI. No way you have enough rudder IMHO. Maybe if you turn it into a glider.

Username Protected · **Posted:** 22 Nov 2018, 21:24

Username Protected wrote:

I could see that. The yaw would be pretty extreme as designed.

Yes, yaw would be unsustainable in single engine op, but they are probably not designing for that. It would be easy to put two independent motors, powered by independent circuits into each wing pod, so you never have to worry about one quitting.

Username Protected · **Posted:** 22 Nov 2018, 21:39

Username Protected wrote:

I could see that. The yaw would be pretty extreme as designed.

Yes, yaw would be unsustainable in single engine op, but they are probably not designing for that. It would be easy to put two independent motors, powered by independent circuits into each wing pod, so you never have to worry about one quitting.

Username Protected · **Posted:** 22 Nov 2018, 21:56

Username Protected wrote:

Powering one prop I guess? Doesn’t that double the battery?

Yeah, likely one prop, although dual, concentric, contra-rotating props are an option.

It would not have any effect on the battery, it just means instead of one 300 hp motor in each wing you have two 150 hp motors.

Username Protected · **Posted:** 22 Nov 2018, 22:22

Username Protected wrote:

Powering one prop I guess? Doesn’t that double the battery?

Yeah, likely one prop, although dual, concentric, contra-rotating props are an option.

It would not have any effect on the battery, it just means instead of one 300 hp motor in each wing you have two 150 hp motors.

Username Protected · **Posted:** 18 Jun 2019, 22:27

Looks like Yuri hit the nail on the head back in November. Cape Air has signed on. Interesting to watch--potential game changer:

https://www.bloomberg.com/news/articles ... r-cape-air