"Hi Robert,
Nice project!
What are you going to use as clutch or one way bearing between the rotor and each drive chain?
Without that, after engine or bevel gear failure would be impossible to perform an autorotation.
USB connector (top-left)
Infrared sensors XYZ Horizon connector (bottom-right)
I2C conector for pressure sensor (SCP1000) or magnetometer (HMC5843) (bottom)
The left “strange” pads could serve to ppm encoder in order to monitor some…"
Here my guess for the oil pan:
-FTDI chip (top-left)
-Multiplexor (bottom-left)
-Differential Pressure Sensor MPXV5004DP (top-right)
-Gyro LPR530AL for Pitch and Roll (center)
-Gyro LPY530AL for yaw…"
"You can go with:
APC 10 x 4.7 Slow Flyer Pusher Propeller (APC10047SFP) for clockwise
APC 10x4.7 Slow Flyer Propeller (APC10047SF) for counterclockwise
Of course depends on your motor and ESC. www.amainhobbies.com has them in stock.