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Manual and automatic control of surface effect shipsA recent investigation of crew performance in the motion environment of a large generic high speed surface effect ship by means of a motion base simulation addressed some of the helmsman's control task with an external forward visual field of the seascape and navigation and steering displays in the pilot house. In addition to the primary steering control task, a subcritical speed tracking task provided a secondary surrogate for trimming the water speed of the craft. The results of helsmen's steering describing function measurements are presented, and some suggestions for their interpretation are offered. The likely steering loop closures comprise heading and lateral displacement for the course keeping task investigated. Also discussed is the manner in which these loop closures were implemented for automatic steering of the surface effect ship. Regardless of the influence of workload, steering technique, water speed and sea state, the helmsmen apparently adopted a disturbance regulation bandwidth of about 0.2 rad/sec for lateral displacement.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Clement, W. F.
(Systems Technology, Inc. Hawthorne, CA, United States)
Shanahan, J. J.
(Systems Technology, Inc. Hawthorne, CA, United States)
Allen, R. W.
(Systems Technology, Inc. Hawthorne, CA, United States)
Date Acquired
August 8, 2013
Publication Date
May 1, 1975
Publication Information
Publication: NASA. Ames Res. Center 11th Ann. Conf. on Manual Control
Subject Category
Man/System Technology And Life Support
Accession Number
Funding Number(s)
CONTRACT_GRANT: N00024-73-C-0914
Distribution Limits
Work of the US Gov. Public Use Permitted.
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