Quadcopter advanced concept.

[Yeeldeezy]

Good day everyone.
I am just curious about the feasibility of using a quad copter in an ultra-efficient RC aircraft for maximum flight time.
If quads use 4 motors, the motors would be placed along the "plane's"s wings.
1 2
3 4
/\front 1 3 4 2 (plane front view)
I have the maneuverability worked out for pitch, yaw, and roll using the differential thrust a quad copter provides. My question is using a raspberry pi for programming the gyro since roll and yaw are flipped. Also, are there pre configured kits with very large quadcopter prop diameters? Thank you for your time,
Yeldeezy

 

[Yeeldeezy]

This is very efficient because there is always increased flow over the airfoils( 4 motors on a wing), and because all of the energy is put into thrust and not servos or something.
It is also very simple just being a battery, canted motors, and electronics.

 

[mozquito1]

I'm no boffin but pitch up maybe OK but down maybe a problem I think as if you throttle them motors up it will steal the airflow from over the wing. Causing drag. It will work to some extent. Why not design a VTOL, surely it will be a lot less complicated with less wiring & switches.