| Frequently Asked
Questions |
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? |
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? |
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? |
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? |
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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