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Advanced Optics & Energy Technology Center
Advanced Mirror Technology
Small Business Innovative Research
Sandy Montgomery/SD71
• Blue Line Engineering SBIRs
–
–
–
–
NAS8-99081
Fully Active Subscale Telescope (FAST)
NAS8- 01034
AI Based, Self-Correcting, Self-Reporting Edge
Sensors
• MSFC CDDF
– Marshall Optical Control Cluster Computer
(MOC3)
SM050701-1640
Advanced Optics & Energy Technology Center
Advanced
Mirror Technology
Blue Line Engineering
NAS8-99081
Fully Active
Subscale
Telescope Research
(FAST)
Small
Business
Innovative
Sandy Montgomery/SD71
•Phase II completion date: March 26, 2002
•Objectives:
•1/8 Scale model of NGST yardstick
•Highly versatile testbed for NASA researchers
•Demonstration events in lab and exhibit hall
•Testbed Components
•Hinges, latches, actuators, and deployment
mechanisms
•Seven, 33 cm diameter primary mirror
segments
•Electronics for static figure correction &
maintenance
•Motorized Stow/Deploy
•Diffraction-limited performance (l>2
microns)
SM050701-1640
Advanced Optics & Energy Technology Center
Advanced
Mirror
Technology
Xinetics
. NAS8-98243
Large,
Cryogenic
Ultralightweight
Mirror
Technology
Small
Business
Innovative
Research
Sandy Montgomery/SD71
Optical Design
Aperture:
Obscuration:
Stowed:
Prescription:
FOV:
Segments:
FTF diameter:
Thickness:
Mass:
Performance:
SM050701-1640
equivalent to 92.5 cm dia.
filled circular (0.672 m2)
<10%
cyclinder 50 cm diam X 100 cm tall
parabolic, f/1.25, 2.5m focal length
>4 arc minutes
hexagonal
33.3 cm
1.8 cm
< 1 kg/segment
(35 kg total including electronics)
Diffraction limit at 2 µm
(l/14 = 143nm ~ 1/4 wave visible)
Advanced Optics & Energy Technology Center
AdvancedNAS8Mirror
Technology
01034
Small
Business
Innovative
Research
AI Based,
Self-Correcting,
Self-Reporting
Edge Sensors
Sandy Montgomery/SD71
•Phase I completion date: August 17, 2001
•Objective feasibility of enhanced edge sensors
to deploy, align, and phase match the primary
mirror segments of space based telescopes
•Design Features
•operational env.: 30 °K >T> 370 °K
•fuzzy logic
•health & status monitoring
•self-reporting
•neural networks
•self-correcting
•self-tuning.
SM050701-1640
•new error compensation methods
•super accuracy
•multi-mode measurements
•phasing
•gap
Advanced Optics & Energy Technology Center
Advanced Mirror Technology
Small Business Innovative Research
Sandy Montgomery/SD71
Phase I
experimental testing
computer simulation and modeling.
In Phase II
two standard model edge sensors
developed,
fully characterized
documented.
SM050701-1640
Advanced Optics & Energy Technology Center
MSFC
CDDF
Advanced
Mirror
Technology
Marshall
Control
ClusterResearch
Computer
Small Optical
Business
Innovative
(MOC3)
Sandy Montgomery/SD71
• Project Schedule: FY01 & FY02
• Investigators
– PI:John Weir/ED19
– Co-I: Donald Larson/SD71
• Objectives
Beowulf Cluster Computer [after Ridge et al, 1997]
– 103 fold increase in computing capability for managing active
primary mirror segments
– improved techniques for minimizing wave front error.
– experience
• parallel computing technologies and software
• ground-based computer clusters
• embedded clusters in future spacecraft
SM050701-1640
Advanced Optics & Energy Technology Center
MSFC
CDDF
Advanced
Mirror
Technology
Marshall
Control
ClusterResearch
Computer
Small Optical
Business
Innovative
(MOC3)
Sandy Montgomery/SD71
Plan:
•Purchase a Beowulf computer cluster and associated Linux software.
•Utilize the Beowulf in conjunction with optical test beds to develop
• the use of cluster computing for segmented mirror control.
• software for astronomy and wave front control, and
• application program - distributed computing (e.g. Fortran 99).
•Beowulf Background
•technology of clustering Linux computers to form a parallel, virtual supercomputer.
•one server node with client nodes connected together via Ethernet or some other network.
•no custom components; mass-market commodity hardware
•PC capable of running Linux,
•Ethernet adapters
•switches.
•Intiated in 1994
•NASA High Performance Computing and Communications program
•Earth and space sciences project at the Goddard Space Flight Center.
•In October of 1996
•Gigaflops sustained performance on a space science application for cost under $50K.
SM050701-1640
Advanced Optics & Energy Technology Center
MSFC
CDDF
Advanced
Mirror
Technology
Marshall
Control
ClusterResearch
Computer
Small Optical
Business
Innovative
(MOC3)
Sandy Montgomery/SD71
7 Slave Node(s)
4U Rackmount ATX Case with 250 Watt UL Power Supply
Dual Processor, 1 Ghz Intel Pentium III, 512 MB RAM, 20 GB HD
Dolphin Interconnect’s Wulfkit
Head Node
4U Rackmount ATX Case with 250 Watt UL Power Supply
Dual Processor, 1 Ghz Intel Pentium III
Dual Processor, 1 Ghz Intel Pentium III, 512 MB RAM, 20 GB HD
32x CD-R/W, SVGA with 32 MB, Tape back-up
“Huinalu”at MHPCC: 260 dual PIII 933 MHz nodes, each
Dolphin Interconnect’s Wulfkit
Software:
Enhanced Red Hat Distribution Linux v 7.0
Accessories
Portland Group Workstation 3.1 Compilers for C
UPS
PVM, MPICH, LAM-MPI Communication Libraries
Network Switch
ScaLAPACK with ATLAS Libraries
KVM Switch
Portable Batch System (PBS)
Rackmount Cabinet
Parallel Virtual File System PVFS
Doglsed Administration and Monitoring Tool
Lesstiff, Mesa (OpenGL), IBM Data Explorer
SCA Linda (4 CPUs)
MI/NASTRAN for the PC from Macro Industries
SM050701-1640