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In
conjunction with recent design projects, we have developed
several computer programs relating to performance analysis and
prediction.
RESIST
predicts the drag
characteristics of a variety of hull types and underwater foils:
displacement hulls, slender, light displacement hulls, planing
hulls, hydrofoil craft.
SAILPLAN
was
developed to evaluate the efficiency of a tilting rig. The
program calculates lift, drag, and total force and moment
resultants in a 3 axis system for any combination of main, jib
and spinnaker and for any input rake and cant, over a full range
of wind angles.
FOILS
uses
resultant forces from the sailplan to optimize size, position,
and helm balance of the keel or board and rudder or any
combination of underwater foils.
PERFORM
is a velocity
prediction program originally developed for the Formula 500
project, because conventional VPPs could not handle the extreme
stability and planing speeds of this type of hull. The program
has undergone several enhancements to work with multihulls and
with a wide variety of hull / foil combinations.
POWER
combines the drag
estimates from a given form with a sophisticated propeller
design calculation, allowing an optimum stock propeller to be
selected or a new propeller designed to suit a specific
application.
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