Quadrotor
From Organic Design wiki
Quadrotor is helicopter that has four rotors for stability.
Looking at making one using: 11.1v Brushless 13000-RPM motor for each rotor digital 1.7V to 2.75V 3-AXIS ACCELEROMETER digital 2.4V to 3.6V 3-AXIS GYROSCOPE 5v RaspberryPi to calculate everything. Looking at [1] for how to use the gyro and accelerometer together well.