The UH-72 AFCS controls which three axes, forming a 3-axis system?

• A. Pitch, Roll, and Yaw
• B. Pitch, Roll, and Altitude
• C. Pitch, Yaw, and Altitude
• D. Roll, Yaw, and Altitude

Answer: (A)

The idea behind a 3-axis system is that a helicopter can rotate around three different lines: pitch about the lateral axis (nose up or down), roll about the longitudinal axis (tilting left or right), and yaw about the vertical axis (heading change). The UH-72 AFCS is designed to stabilize and control the aircraft around those three rotations, keeping it steady in hover and during flight. Altitude, while it is a vertical position the helicopter maintains, is not a rotation and thus isn’t considered an axis. So the AFCS focuses on pitch, roll, and yaw.