BillowedSquareSail:

% A billowed, square, nonideal sail in the Y/Z plane.
 This model assumes the sail is attached to the booms only at the corners,
 so that the maximum billow due to solar pressure is in the center. 
 The sail front is along +X in the body frame.

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  Reference:
  Heaton. Solar Sail GN&C Model Comparisons. AIAA Guidance, Navigation, and 
  Control Conference (2004) pp. 12
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  See also SailMesh, HRakoczy, OpticalMcInnesToPSS, BuildCADModel, 
  CreateBody, CreateComponent, DrawSCPlanPlugIn, Inertias, FindDirectory, 
  SaveStructure, AddAxes
  ------------------------------------------------------------------------
%
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  Copyright (c) 2009 Princeton Satellite Systems, Inc. 
  All rights reserved.
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   Since version 7.
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Children:

AeroUtils: CAD/BuildCADModel
AeroUtils: CAD/CreateBody
AeroUtils: CAD/CreateComponent
AeroUtils: CAD/DrawSCPlanPlugIn
Common: FileUtils/FindDirectory
Common: General/SaveStructure
Common: Graphics/AddAxes
Common: MassProperties/Inertias
Sail: Disturbances/OpticalMcInnesToPSS
Sail: SailModeling/HRakoczy
Sail: SailModeling/SailMesh