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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