{{projectinfo|Tutorial| Simulating Radiation in the Presence of Large Metallic Shipboard Platforms|Illumina L4 Fig title.png|In this project, you will compute the radiation pattern of a short dipole radiator in the presence of a large metallic ship model imported from a CAD file.|
*[[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]]
*CAD Import
*STEP Model
In this tutorial you will learn how to import an external CAD model and set up a large-scale physical optics simulation in the [[EM.Illumina]].
[[Image:Back_icon.png|30px]] '''[[EM.Illumina | Back to EM.Illumina Manual]]'''
[[Image:Back_icon.png|30px]] '''[[EM.Cube#EM.Illumina_Documentation | Back to EM.Illumina Tutorial Gateway]]'''
[[Image:Download2x.png|30px]] '''[http://www.emagtech.com/downloads/ProjectRepo/EMIllumina_Lesson4.zip Download projects related to this tutorial lesson]'''
== Getting Started ==
<div class="noprint" style="clear:both"></div>
For this tutorial lesson, you need to import a STEP CAD model file called "[http://www.emagtech.com/downloads/ProjectRepo/shipShip.zip shipShip.STP]" from our [http://www.emagtech.com/downloads/ProjectRepo/shipShip.zip File Repository]. Make sure you have chosen meters as the unit project.
== Importing the Ship Model ==
In [[EM.Cube]], external objects are always imported to [[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]] first. From [[CubeCADImage:cubecadlogo.png]] first. From CubeCAD you can transfer an imported object to any of the other computational modules. To import the ship model, go to '''File Menu''' and select <b>Import...</b>. The standard Windows Open dialog opens up with the file type set to ".STP". Browse your folders to find the downloaded CAD model file named "Ship_ModelShip.STP". Select it and click the {{key|Open}} button. A total 12 solid CAD objects appear in the project workspace of the [[CubeCAD]] Module as shown in the figure below:
<table>
</table>
Next, you have to move all the imported solids to the PEC_1 group of [[EM.Illumina]]. To do so, select all the solid names on the navigation tree of the [[CubeCAD]] module. Start with <b>Solid_1 </b> and select it. Then, hold down the keyboard's {{key|Shift}} key and click <b>Solid_12</b>. While still holding down the shift key, right-click on the selection and select <b>Move To → [[EM.Illumina]] → PEC_1</b> from the contextual menu. All the objects will disappear from [[CubeCAD]] and will reappear in [[EM.Illumina]]'s workspace under the PEC_1 group.
<table>
<tr>
<td>
[[Image:Illumina L4 Fig11.png|thumb|left|720px|The theta phi component of the 3D radiation pattern of the horizontal short dipole in the presence of the ship model.]]
</td>
</tr>
</table>
The figures below show the dB-scale 2D graphs of the radiation patterns in the XY, YZ and ZX planes plotted in EM.Grid.
<table>
<p> </p>
[[Image:Top_icon.png|30px]] '''[[#What_You_Will_Learn | Back to the Top of the Page]]''' [[Image:Back_icon.png|40px30px]] '''[[EM.Cube#EM.Illumina_Tutorial_Lessons Illumina_Documentation | Back to EM.Illumina Tutorial Gateway]]'''