Keesje, Fantastic concept my friend. I can appriciate what your trying to do, blend the advantages of jets and TP's.
The 6 abreast seating is a great idea for a start. I fly the 146, and as far as I can tell, most pax prefer a roomy, quiet cabin, rather than the engine type (jet or prop) It's irrelevant if you can keep the noise down inside your cabin, noise and vibration are the key factors in pax comfort.
Regarding your idea of taxiing out with your engines shut down, using the electric drives, I'm certain at LCY (where I fly the 146 into
) this wouldn't be advantageous. Holding times at WORST in my experience are 10-15 mins. And backtracking down the runway requires a higher than normal taxi speed. I'm not sure your electric drives could produce up to 30knots in taxi speed. And to be honest, using TP engines, your fuel efficiency is higher than a regional jet anyway, so I would guess that any fuel saving from taxiing with your engines shutdown will be negligible.
Another thing about starting your engines at the runway (or near it) that concerns me is electrical power. Considering your APU will be running your electrical drives, as well as the entire AC system of your aircraft, The chance for failure of the APU generator is higher. Imagine if your APU/APU generator failed on taxi out. Your aircraft would come to a halt in the middle of the taxiway. With no AC electrical power. PA system wouldn't work so communications with cabin crew and pax would be difficult, and if at night, cabin plunged into darkness with only emergency lighting. Not good.
Also the late starting of engines poses problems (again)
Say one of your engines won't start or you suffer a hot start or even a fire. You have no ground crew support. Evacuation of pax (if required) would be a major problem, considering you may have other aircraft infront and behind you. And the clousure of a whole taxiway (or even the airport) is a possibilty, what with a fire damaged A/C and 160+ pax on the loose near an active runway.
I'd say ditch these drives (it's just something else that needs to be maintained) And your onto a winner.
As for your window at the door being elevated up, it's a nice idea, but can't you just build it into the door? The door is a heavy system anyway...
Good work though!!
Atreyu
