Design of Yacht Adapter for Six-Component Dynamometer

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TypeTechnical Report
Series titleLaboratory Memorandum
Subjectyacht model; ALSC dynamometer; tow post
AbstractThere is a need for the Institute for Marine Dynamics to develop a system to test smaller yacht models. This development would increase potential client base. The current yacht dynamometer requires large yacht models and a lengthy test program and has a limited client base. As part of the ALSC project two six component tow post dynamometers were design and fabricated. The smaller dynamometer was thought to be useful for testing smaller yacht models. Primary criteria were established to verify whether or not the ALSC dynamometer has the correct range for the anticipated forces upon a smaller yacht model. Deemed satisfactory, secondary criteria were established for the development of the yacht adapter, using the ALSC dynamometer and tow post. The main criteria for the adapter were it to be free to pitch and heave, but fixed in sway, surge, roll and lift. Due to the precision of yaw deflection (0.005) the existing tow post was found to lack the required stiffness. Based on data for carbon fiber a new post design was proposed. Assumed to be appropriate, recommendations for the carbon post include further investigation with a finite element analysis package. This is required because of the complicated nature of carbon fiber, in the unique setting of the two post environment. The other components of the adapter were completed successfully.
Publication date
PublisherNational Research Council Canada. Institute for Marine Dynamics
PlaceSt. John's, NL
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number5576
NPARC number8895933
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Record identifierfe3f9d0e-7d4c-438e-89f8-5fab083730f9
Record created2009-04-22
Record modified2016-10-03
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