FB
F.A. Braspenning
info
Please Note
<p>This page displays the records of the person named above and is not linked to a unique person identifier. This record may need to be merged to a profile.</p>
2 records found
1
Master thesis
(2026)
-
F.A. Braspenning, O. Stroosma, M.M. van Paassen, O.A. Sharpans'kykh, I. Miletović
The hexapod motion system is the industry standard for full-motion flight simulators. However, specialized applications may require more complex motion systems. Equipping a hexapod with an additional yaw-drive on top would offer the degree of freedom required in evoking spatial disorientation. This study aimed to develop an unconstrained yaw extension to the Classical Washout Algorithm that fully utilizes the capabilities of this motion system by accurately compensating for any yaw-drive orientation without degrading the translational and rotational cueing fidelity. The Classical Washout Algorithm was extended through the addition of a Yaw-drive Channel to cue the low-frequency components of yaw. Furthermore, the kinematic relations between the body and the inertial frames of reference were reconstructed to support any yaw-drive orientation. The design followed a two-step approach using a tradeoff based on objective metrics, followed by a subjective evaluation with a pilot-in-the-loop experiment. From the experiment, a limitation of the Unconstrained Yaw Washout Algorithm was identified. The first version presented in this paper was able to incorporate unconstrained yaw and correctly compensate for any yaw-drive orientation. However, by prioritizing yaw-drive compensation, surge/sway and pitch/roll stimuli became convoluted, and control over the individual stimuli was lost. To address this, the filter parameters for the Translational and Rotational Channels were harmonized, leading to the final design presented in this paper. Collectively, the insights gained from the design process have formed three alternative implementation recommendations aimed at compensating for the yaw-drive while regaining control over surge/sway and pitch/roll cues.
...
The hexapod motion system is the industry standard for full-motion flight simulators. However, specialized applications may require more complex motion systems. Equipping a hexapod with an additional yaw-drive on top would offer the degree of freedom required in evoking spatial disorientation. This study aimed to develop an unconstrained yaw extension to the Classical Washout Algorithm that fully utilizes the capabilities of this motion system by accurately compensating for any yaw-drive orientation without degrading the translational and rotational cueing fidelity. The Classical Washout Algorithm was extended through the addition of a Yaw-drive Channel to cue the low-frequency components of yaw. Furthermore, the kinematic relations between the body and the inertial frames of reference were reconstructed to support any yaw-drive orientation. The design followed a two-step approach using a tradeoff based on objective metrics, followed by a subjective evaluation with a pilot-in-the-loop experiment. From the experiment, a limitation of the Unconstrained Yaw Washout Algorithm was identified. The first version presented in this paper was able to incorporate unconstrained yaw and correctly compensate for any yaw-drive orientation. However, by prioritizing yaw-drive compensation, surge/sway and pitch/roll stimuli became convoluted, and control over the individual stimuli was lost. To address this, the filter parameters for the Translational and Rotational Channels were harmonized, leading to the final design presented in this paper. Collectively, the insights gained from the design process have formed three alternative implementation recommendations aimed at compensating for the yaw-drive while regaining control over surge/sway and pitch/roll cues.