Positioning Folded Airbags

Positioning Folded Airbags

Once the airbag has been folded it can be positioned where you want it by using the POSITION FOLDED BAG option. The reason for using this rather than the normal ORIENT option in PRIMER is so that you do not lose the orientations if you refold the airbag. The orientations are created and viewed just like folds so you can create, delete or edit any orientation. They are cumulative transformations on the folded airbag. For example if you define a translation and then a rotation first the translation will be applied and then the rotation so the order of the orientations is important.

The left hand figure shows the initial window when you enter the positioning section. As there are no orientations the top row of buttons are greyed out. As orientations are defined these buttons can be used to move backwards and forwards through the orientations in exactly the same way as folds in the SET FOLD menu. The DONE button will return to the main folding window. To create a new orientation the CREATE NEW ORIENT button can be used. The default new orientation type is a translation (right hand figure).

At any time an orientation can be deleted by using the DELETE THIS ORIENT button. Once the necessary values have been given for the orientation (for example the translation distance) the orientation can be applied by using APPLY THIS ORIENT . Once applied the button will change to UNDO THIS ORIENT . This button can be used to continually toggle between the unapplied and applied view of the orientation.

Three different orientations are available; translation, rotation and scaling. To change an orientation type use the top row of buttons ( |< , < , > , >| ) to select the orientation number to change and then use the ORIENT TYPE popup menu (figure on right) and choose either TRANSLATE , ROTATE or SCALE . The different options for translation, rotation and scaling are described in the following sections.