| A collaborative project was undertaken between Defence Research and Development Canada and Carleton University to investigate the issue of postural stability in shipboard environments. The author's contribution to the project comprised of the generalization of the rigid body Graham model with time-varying unsteady loads, development of a two-degree of freedom unsteady in-plane cart load model, implementation of all models in the distributed Virtual Flight Deck-Real Time (VFD-RT) simulation environment, and validation of the developed models through physical experimentation. Also, the motion induced interruption (MII) model was generalized and validated through experiments on the Stewart platform and at sea on CFAV Quest. The results show that the unsteady loads have a negative effect on postural stability as the number of MII events increase. As well, a relationship was found between ship heading and optimum stance angle which can be used to determine stance to reduce MII events. |
