Proper use of the SOLVE with the RA command.
When does SOLVE need to preceed the RA command?
The RA command starts the curve at the present heel angle. For example,
ANGLES = 0, 5, ... 60
HEEL = 7
will run the curve of righting arms at 7°, 12°, etc.
The SOLVE command finds equilibrium for the present loading condition. This
may result in a heel angle which is not zero. Therefore,
HEEL = 0
may result in different angles being used.
IF you have a LIMIT such as
LIMIT AREA FROM 0 TO 40 > 10
the angles "0" and "40" will be relative to the starting angle.
If your LIMIT is
LIMIT AREA FROM ABS 0 TO ABS 40 > 10
the angles will be relative to upright.
There is no need to SOLVE before RA unless you want the RA curve to start at
the angle of equilibrium.
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Creative Systems, Inc.