UA can move through 3-D space with _____ degrees of freedom.

UA can move through 3-D space with _____ degrees of freedom.

• A. Four
• B. Six
• C. Five
• D. Seven

Answer: (B)

In three-dimensional space a rigid body has six degrees of freedom: three translational and three rotational. The translational freedoms are movement along the x, y, and z axes, so you can position the UAV anywhere in space. The rotational freedoms are tilt and turn around three axes: roll (rotation about the forward-back axis), pitch (rotation about the side-to-side axis), and yaw (rotation about the vertical axis). Put together, these six values describe both where the UAV is and how it’s facing, giving the complete pose. Three alone would tell you where it is, but not how it’s oriented; the three rotations complete the description.

In three-dimensional space a rigid body has six degrees of freedom: three translational and three rotational. The translational freedoms are movement along the x, y, and z axes, so you can position the UAV anywhere in space. The rotational freedoms are tilt and turn around three axes: roll (rotation about the forward-back axis), pitch (rotation about the side-to-side axis), and yaw (rotation about the vertical axis). Put together, these six values describe both where the UAV is and how it’s facing, giving the complete pose. Three alone would tell you where it is, but not how it’s oriented; the three rotations complete the description.