'Bird of Prey' VTOL UAV drone

Materials::

1. Rotors… Rotors are nylon for cost considerations, unless thrust response is too slow with the flex of these rotors. If response is too slow or thrust is too low, carbon fibre blades can be used
2. Rotor assembly shaft… Shaft can be of hollow carbon fibre or aluminum (archery shafting)
3. Rotor motor mounts assembly… ABS or Nylon plastics, held together with stainless steel screws/bolts, attached to shaft through deformation or bolt-through design

Components::

1. Motors… 2808 1760kv x 8
2. ESCs… 30Amp SimonK Afro x 8
3. Propellers… (6)7x4 folding prop sets, (2)7x4 non-folding props
4. (2) PX4 PixHawk with accessories (incl. GPS, OSD, Telemetry Radio, etc.

1. Tilt Rotor... The BOP uses both rotor tilt and thrust differentiation methods to control speed and direction of motion. The tilt mechanism consists of a hollow aluminum or carbon fibre shaft to which is attached at one end to a gimbal style brushless motor and at the other end a bearing, in the middle is attached a double motor mounting plate for the axial propset.
2. Thrust differentiation... Controlled by a flight controller, the thrust differentiation system for motion control is entirely electronic and linked to both gyroscopic sensors and remote control radio system.
3. Flight controller... Using the industry standard pixhawk or openpilot compatible Cc3d Revolution flight controllers, gyroscopic balance will be maintained through manipulation of both the tilt rotor assembly and the thrust differentiation control systems.
4. Software... The software needed must be able to accept sensor input (airspeed, heading, gyro, power consumption, compass, gps) and use this information to control motion and accessory activation. Motor activation can be regulated by monitoring the draw on each motor set; draw gets too high, more motors kick in.