| Frequently
Asked Questions
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Additional
information about the features and use of PropExpert.
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| What
is PropExpert?
|
PropExpert is a software tool for the selection and analysis of propeller systems for work boats and pleasure craft. Built upon the award-winning NavCad™ technical library,
PropExpert provides the tools needed for the proper selection of propulsion systems components - engine, gear and propeller.
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| Who
should use PropExpert?
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Anyone sizing commercial propellers - marine
equipment salespeople, boat builders, designers
- should use PropExpert. Particular
consideration is given to the requirements of
engine and propeller sales people. Companies large
and small from every continent rely on PropExpert
for their propeller sizing needs.
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| What
hull types can be evaluated by PropExpert?
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Work boats and pleasure craft generally describe the
scope of PropExpert. This would typically
include motor yachts, tugs, trawlers, patrol craft
and sport fishing boats. Only a few data items are
needed to adequately describe the vessel for PropExpert's
various analyses and calculations.
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| What
types of propellers can I size with PropExpert?
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PropExpert can determine optimal diameter,
pitch, blade area and RPM for virtually all
commercially-available inboard propellers of 2 to 5
blades, from about 450 mm (18") diameter up to
about 2.5 m (100"). Both flat-faced (Gawn) and
foil section (B-series) propellers are supported, as
well as ducted propellers (Kaplan). Unique to PropExpert
is its ability to evaluate cupped propellers.
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| Can
I use PropExpert to estimate vessel speed?
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PropExpert offers three techniques to
estimate the speed of the vessel. The most
accurate method is to base the estimation on a
prior trial of the vessel. The trial of a similar
vessel can also be used. When reliable trial data
is unavailable, you can use PropExpert's
basic speed estimation formula.
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