Most RC planes follow a simple control scheme: elevators for pitch, rudder for yaw, and ailerons for roll. This one-to-one mapping keeps things straightforward, and fewer actuators means less weight.
Part of the charm of quadcopters is the challenge that building and flying them presents. In need of complex sensors and computational power to just get off the ground and under tremendous stresses ...
If you are interested in building vehicles either land-based or airborne using a Raspberry Pi you might be interested in a new article by Bryan Cockfield over on the Hackaday website explaining more ...