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dc.contributor.authorHanyok, Lauren Watsonen_US
dc.date.accessioned2013-02-19T22:40:51Z
dc.date.available2013-02-19T22:40:51Z
dc.date.issued2013-01-21en_US
dc.identifier.othervt_gsexam:78en_US
dc.identifier.urihttp://hdl.handle.net/10919/19252
dc.description.abstractThe introduction of calculation methods for motion induced interruptions (MII) in 1984
introduced a new way to quantify human factors in addition to the motion sickness index
(MSI). The 1990 Graham method for calculating MII uses a combination of a vessel\'s
acceleration and roll to determine a tipping" factor to calculate MII per minute. The
Applebee-Baitis (AB) method considered that the motions are implicitly considered in accelerations, and therefore did not require roll to calculate MII. This thesis examines and
analyzes the di"erences between the AB and Graham methods and compares their results
for a unique hull form shape, a cylindrical capsule, in rough seas to determine which method
is preferred. Two tests were performed by the Naval Surface Warfare Center, Carderock
Division (NSWCCD) for the National Aeronautics and Space Administration (NASA) on
the Orion Crew Exploration Vehicle (CEV) in post-splashdown conditions. A one-quarter
scale model of the CEV was tested at the Aberdeen Test Center in Aberdeen, Maryland.
Direct comparison of the analyzed data, MII sensitivity to location, and scaling analyses are
examined and future work to further the application of MII calculation methods are proposed.
The symmetry of the capsule leads to the assumption that roll and pitch-dominant
MII calculations should be on the same order of magnitude. They are not because both MII
methods only take roll-motions into account. The inclusion of both pitch and roll motions
for the MII calculations is proposed as future work. The Graham method was found to be
the more appropriate calculation because it is more conservative, and therefore preferred in
the context of crew safety.
en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectmotion induced interruptionsen_US
dc.subjectunique hull formen_US
dc.subjectspace capsuleen_US
dc.subjectaccelerationsen_US
dc.subjecthuman factorsen_US
dc.titleMethods for Calculating Motion Induced Interruptions as Applied to a Space Capsule After Splashdownen_US
dc.typeThesisen_US
dc.contributor.departmentAerospace and Ocean Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineOcean Engineeringen_US
dc.contributor.committeechairMcCue-Weil, Leigh S.en_US
dc.contributor.committeememberBelknap, William Forresten_US
dc.contributor.committeememberBrown, Alan J.en_US


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