Arnold, William R., Sr.

Stahl, H. Philip

NASA Technical Reports Server

7/20/2012
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ARNOLD LIGHWEIGHT MIRROR MODELER
VERSION 2.0
WILLIAM R. ARNOLD, SR
DEFENSE ACQUISITION, INC
(SUBCONTRACT WITH JACOBS ESTS)
HUNSTVILLE, ALABAMA
H. PHILIP STAHL
NASA MSFC, HUNTSVILLE, AL.
NASA TECH DAYS 2012 1
HERITAGE
• SECOND GENERATION OF EGGCRATE MODELER DEVELOPED 
AT L3-COMM BRASHEAR, PITTSBURGH, PA. USED TO DESIGN 
PRIMARY MIRROR, SUPPORT SYSTEM AND MIRROR 
HANDLING EQUIPMENT FOR THE KEPLER PLANET FINDER.
• COMPLETE REWRITE FOR USE ON WINDOWS 7 AND ABOVE 
OPERATING SYSTEMS.
• EXPANDED TO MULTI-SEGMENT MIRROR AS WELL AS SINGLE 
MIRROR SYSTEMS.
NASA TECH DAYS 2012 2
https://ntrs.nasa.gov/search.jsp?R=20120015783 2019-08-30T22:53:12+00:00Z
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INTEGRATED PRODUCT DESIGN
CONVERT ANALYSIS TO DESIGN
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THE FINAL PRODUCT
PROGRAM CONTROL WINDOW
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BOTH 2D AND 3D DISPLAYS
GUI ALLOWS PAN AND ZOOM
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ELEMENT SHRINK HELPS UNDERSTAND MESH
ALSO ISOGRID AND SIMPLIFIED MESHES
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QUICKLY REMESH
ADD CENTRAL HOLE EASILY
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MODEL SEGMENTED MIRRORS
ALMOST UNLIMITED SIZE
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MODEL CIRCULAR SEGMENTED MIRRORS 
SUPPORTS ISOGRID FACESHEETS
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EDGES CAN HAVE RIBS
MODEL CAN BE MERGED IN ONE MIRROR
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FRONT AND BACK ISOGRIDS SUPPORTED
OFFSET SUPER-CELLS SUPPORTED
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WITH OR WITHOUT SEAL RINGS
MODEL STATISTICS ON THE FLY
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ANY OPTIC SUBSCRIPTION SUPPORTED
CONTROL OVER MOST VARIABLES
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CONTROL OVER CORE DESIGN
WHOLE MIRROR OR SEGMENT SUPPORTS
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USER CAN ADJUST AND OPTIMIZE
AXIAL AS WELL AS RADIAL STYLES
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MODEL TEST MOUNTS, ETC
ANY VARIETY OF HEXAPOD SUPPORT
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WHOLE MIRROR OR EACH SEGMENT
GENERATE STATIC LOADING CONDITIONS
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GENERATE DYNAMIC LOADING SETS
(IN WORK) ULE CTE MAPPING
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FUTURE ENHANCEMENTS
• FINISH CTE MAPPING
• LOCALIZED MESH REFINEMENT AT ATTACHMENT POINTS
• REAL CONSTANT BASED COLOR 3D DISPLAY OF MODEL
• AUTOMATIC BAD ASPECT RATIO ELEMENT FLAGGING/PLOTTING
• HEXAPOD GEOMETRY OPTIMIZATION
• EXPAND ANSYS GENERATED DATA SUMMARIES
• ABACUS OUTPUT FORMAT (LOW PRIORITY FOR NOW)
• NASTRAN OUTPUT FORMAT (NEEDS SPONSOR)
• USER MANUAL
• TUTORIAL(S) ON HOW TO USE MODELER
• SHORT COARSE IN ADVANCED MIRROR DESIGN METHODS
NASA TECH DAYS 2012 35


Arnold Lightweight Mirror Modeler

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