This is just a quick rough sketch!

Nothing is to scale.

There are major linkage problems inside the model.

The sub-micro helicopter parts don't exist and may have to be custom made.

Its brain, heart and guts are missing.

I may scrap this design for several other variations with tubes/ducts, and or reversible motors.

SketchUp model available. https://www.dropbox.com/s/mu5yem1tqdi34rs/QuadSki.skp?dl=0

The four prop vertical lift quadcopter portion of this project will maintain stabilization, altitude, and rotation by four flaps on the bottom. The horizontal thrust portion will focus on rapid acceleration and deceleration to a certain distance or point.

The horizontal thrust concept is based on a variable pitch propeller and motor combination. This one has the push rod through the center of the motor:

http://www.hobbyking.com/hobbyking/store/__6294__Variable_pitch_prop_motor_set_7_Type_A.html

The SketchUp model shows twelve motors and twelve props. I would like a design where one motor and one servo drives four thrust props. This might be needed to reduce the weight, if the linkage doesn't outweigh the motors.

The flow chart below only shows air flow direction for four props on one axis (X axis movement left and right.) A second four prop setup, overlaid perpendicular, completes the other direction (Z axis movement for forward and back.) All eight props share a common air chamber. I am imagining that air flow pressure and exhaust will equalize, even when moving in two directions.

Top:

Bottom:

Side: