Speed and accuracy of head- and eye-based aiming systems at high vertical acceleration.

Background: The benefits of using a head tracker in a fast jet to aim weapons and control sensor direction have been amply demonstrated, but head direction is difficult to control at high G. An experiment was conducted to assess whether aiming using the eye, rather than the head, might be advantageous.

Methods: A centrifuge provided sustained accelerations of up to 8 Gz.