N.B. A maximum of 10 thruster forces may be specified on each structure, i.e. up to 10 thruster data records may be input within a data category.
2 5 7 11 16 21 31 41
- --- -- ---- ----- ----- --------- --------- ---------
|X| | |THRS|XXXXX| | | | |
- --- -- ---- ----- ----- --------- --------- ---------
| | | | | | |
| | | | | | |
| | | | |-------------------
| | | | |
| | | | |_(2)-(4)X,Y,Z Components of Force(6E10.0)
| | | |
| | | |
| | | |_(1)Node Number(I5)
| | |
| | |
| | |_Compulsory Data Record Keyword(A4)
| |
| |
| |_Optional User Identifier(A2)
|
|_Compulsory END on last data record in data category(A3)(1) This node number and its corresponding position (defined in Data Category 1) specifies the position on the structure at which the Thruster Force (2)- (4) acts.
(2)-(4) These are the three components of force in the X,Y, and Z directions (see note below) exerted by the thruster at the position of the node (1) specified.
Note: The magnitude of the thruster forces is assumed to be constant throughout the analysis. The three components of force define the direction relative to the structure which is also assumed constant. This means that their direction relative to the Fixed Reference Axis system (FRA) will change with the structure position; for example, if the thruster force is defined with a component in the X direction only (i.e. zero for parameters (3) and (4)) and the structure at some stage of the analysis is yawed (Z rotation) by 90 degrees, then the direction of the force will act in the Y direction of the Fixed Reference Axes (FRA).