

Aviation Terms
| Title | Description |
| Q | Quebec |
| Q-Star | A private company that provides independently audited reports for private jet charter operators. |
| Quaternion | A system of representing attitude by measuring angle of aircraft center line with respect to three orthogonal axes plus rotation about centerline. Quaternions are used over Euler angles (pitch, roll, yaw) when pitch can approach 90-degrees because of a singularity on Euler angles at 90-degrees. Discrete-time computations using quaternions can run more slowly than those with Euler angles while producing results of the same accuracy. |







