Path: CubeSat/Utilities
% Generate vertices and faces for a CubeSat model.
If there are no outputs it will generate a plot with surface normals, or
you can draw the cubesat model using patch:
patch('vertices',v,'faces',f,'facecolor',[0.5 0.5 0.5]);
type can be '3U' or [3 2 1] i.e. a different dimension for x, y and z.
Type CubeSatModel for a demo of a 3U CubeSat.
This function will populate dRHS for use in RHSCubeSat. The surface
data for the cube faces will be 6 surfaces that are the dimensions of
the core spacecraft. Additional surfaces are added for the deployable
solar panels. Solar panels are grouped into wings that attached to the
edges of the CubeSat.
The function computes the inertia matrix, center of mass and total
mass. The mass properties of the interior components are computed from
total mass and center of mass.
If you set frameOnly to true (or 1), v and f will not contain the
walls. However, dRHS will contain all the wall properties.
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Form:
d = CubeSatModel( 'struct' )
[v, f] = CubeSatModel( type, t )
[v, f, dRHS] = CubeSatModel( type, d, frameOnly )
Demo:
CubeSatModel
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Inputs
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type (1,:) 'nU' where n may be any number, or [x y z]
d (.) Data structure for the CubeSat
.thicknessWall (1,1) Wall thickness (mm)
.thicknessRail (1,1) Rail thickness (mm)
.densityWall (1,1) Density of the wall material (kg/m3)
.massComponents (1,1) Interior component mass (kg)
.cMComponents (1,1) Interior components center of mass
.sigma (3,6) [absorbed; specular; diffuse]
.cD (1,6) Drag coefficient
.solarPanel.dim (3,1) [side attached to cubesat, side perpendicular, thickness]
.solarPanel.nPanels (1,1) Number of panels per wing
.solarPanel.rPanel (3,w) Location of inner edge of panel
.solarPanel.sPanel (3,w) Direction of wing spine
.solarPanel.cellNormal (3,w) Wing cell normal
.solarPanel.sigmaCell (3,1) [absorbed; specular; diffuse] coefficients
.solarPanel.sigmaBack (3,1) [absorbed; specular; diffuse]
.solarPanel.mass (1,1) Panel mass
- OR -
t (1,1) Wall thickness (mm)
frameOnly (1,1) If true just draw the frame, optional
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Outputs
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v (:,3) Vertices
f (:,3) Faces
dRHS (.) Data structure for the function RHSCubeSat
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Reference: CubeSat Design Specification (CDS) Revision 9
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CubeSat: Simulation/RHSCubeSat CubeSat: Utilities/CubeSatFaces CubeSat: Visualization/DrawCubeSat Common: ComponentModels/Box Common: Graphics/TitleS Common: MassProperties/AddMass Common: MassProperties/Inertias Math: Linear/Cross Math: Linear/DupVect Math: Linear/Unit
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