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Marine Performance Technology Exchange |
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Singing propellers What makes a propeller "sing"? Some propellers produce an audible high-pitched tone which has come to be known as "singing". More of an annoyance than anything harmful, the hydrodynamics of singing have been a source of debate for decades. [more] Half angle of entrance What is the best entry angle for a boat's operating speed? Entry angle (referred to as the half angle of entrance) is a significant player in vessel wave-making drag. [more] Thrust
and power factors for propeller material and ISO class Does propeller material or ISO class
affect my choice of thrust and power factors? Material and class have
no real impact on thrust and power factors ( the Kt and Kq multipliers
in NavCad, T & P factors in PropExpert and SwiftCraft). [more] |
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New software numbering system HydroComp has begun using a new numbering system for our software releases. [more] New
web site improves support & information HydroComp will shortly be unveiling
our newly redesigned web site. It will provide more support and information
to existing users, service clients, and visitors. [more] |
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SwiftTrial
popularity spans maritime industry SwiftTrial - an easy-to-use utility to document and
evaluate boat trials - has spanned the entire spectrum of maritime
industries. ...[more] |
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| Calendar SNAME, San Francisco,
17-20 October |
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| Copyright © 2003 HydroComp, Inc. Durham, NH USA. All rights reserved. Email inquiries to or call +1.603.868.3344. |
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