Defining a Winch Assembly Defining a Winch Assembly

A winch assembly is simply a set of connectors connected to a winch. Such an assembly is defined by the command


     ASSEMBLY WINCH, WINCH_NAME, EL(1), ........, EL(i) -OPTIONS

Here, WINCH_NAME is the name you wish to give to the winch assembly, and EL(i) are previously defined connector element names. The connector elements must be either B_CAT, H_CAT, SL_ELEM, ROD, GSPR, LMU elements, or the SLING element connecting the boom to the hook on a tip-hook assembly.

Here the available option is



     -WINCH, FULL_WEIGHT, MAX_TORQUE, S_MOMENT, D_MOMENT, \
     TOT_LENGTH, FULL_GYRADIUS, FULL_RADIUS

This option is used to define the mechanical properties of the winch and alternatively the second defines the velocity of the winch as a function of time. Here, FULL_WEIGHT is the weight (feet or meters) of the drum plus the wire.The next three values define either the maximum applied torque, MAX_TORQUE, maximum applied torque or two moments applied by a brake. S_MOMENT is the static moment due to the brake and D_MOMENT is a factor which when multiplied by the square of the angular velocity is the dynamic moment due to the brake All three of these are in bforce-blength. The last three values are: the total length of wire on the drum, the radius of gyration of the drum plus wire when full, and the radius of gyration of the drum plus the wire when the winch is full in feet or meters.