RPAS Airframes: Quadcopters
The quadcopter's positioning is connected to its four propellers/motors, and its movement is controlled by the trim.
Parts of an Quadcopter:
Payload: usually a camera, but can be cargo depending on drone
UAV Rotors: turned by motors, produce lift
Drone trim: is adjusting the yaw, pitch, roll, and throttle on your drone using the buttons on your transmitter.
Image Source: https://www.rfwireless-world.com/Tutorials/Basic-tutorial-on-Drone-UAV-Unmanned-Aerial-Vehicle.html