Acceleration onset cueing is a term for the cueing principle used by a simulator motion platform.
Motion platforms used in "Level D" full flight simulators (FFS) and equivalent military simulators have six jacks that can move the replica cockpit that is mounted on the platform in any of the six degrees of freedom (6 DOF) that can be experienced by any body free to move in space. These are the three rotations pitch (about the transverse axis), roll (about the longitudinal axis) and yaw (about the vertical axis), and three linear movements heave (up and down), sway (side to side) and surge (fore and aft). The jack layout used is generally that of the so-called Stewart platform, shown in a moving picture on the left and on which the simulator cabin will be mounted.