NASA Scientific and Technical Aerospace Reports
NASA Scientific and Technical Aerospace Reports
NASA Scientific and Technical Aerospace Reports
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
20040120996 <strong>NASA</strong> Marshall Space Flight Center, Huntsville, AL, USA<br />
Magnetic Symbology Reader<br />
Schramm, Harry F., Inventor; Shih, William C. L., Inventor; Fitzpatrick, Gerald L., Inventor; Knisely, Craig, Inventor; June<br />
08, 2004; 5 pp.; In English; Original contains black <strong>and</strong> white illustrations<br />
Patent Info.: Filed 5 Aug. 2002; US-Patent-6,745,942; US-Patent-Appl-SN-214482; <strong>NASA</strong>-Case-MFS-31768-1; No<br />
Copyright; Avail: CASI; A01, Hardcopy<br />
A magnetic symbology reader has a housing containing a polarized light source which directs light though a<br />
magneto-optic sensor onto a reflector which reflects light least one analyzer <strong>and</strong> into at least one camera. A view finder allows<br />
the user to monitor the image on the sensor as seen by a viewfinder camera while a processor is coupled to possibly a second<br />
camera so that when an image is detected, the image from the camera may be processed by the processor to output information<br />
associated with the symbol to an external source. The analyzer <strong>and</strong> polarized light source provide contrast in the images<br />
detected by the sensor. A bias/erase coil located about the magneto-optic sensor can enhance or erase images on the sensor.<br />
Official Gazette of the U.S. Patent <strong>and</strong> Trademark Office<br />
Magneto-Optics; Readers; Symbols; Sensors<br />
20040121090 <strong>NASA</strong> Marshall Space Flight Center, Huntsville, AL, USA<br />
A Novel <strong>and</strong> New Ultra-Lightweight Reinforcement for Producing Low Mass Optical Systems<br />
Kobell, W.; [2004]; 1 pp.; In English; Mirror Technology Days (SD70 Website), 17-19 Aug. 2004, Huntsville, AL, USA<br />
Contract(s)/Grant(s): NAS8-00199; No Copyright; Avail: CASI; A01, Hardcopy<br />
This Phase II SBIR project deals with the manufacturing of isotropic, hollow carbon fibers for optical applications. The<br />
intrinsic CTE anisotropy of carbon fibers makes them virtually impractical for optical applications. A novel approach to this<br />
problem was implementation of carbon fibers that are isotropic <strong>and</strong> have good mechanical properties. A 4’ deliverable mirror<br />
was fabricated with this fiber <strong>and</strong> delivered to <strong>NASA</strong> MSFC. Optical quality Silicon was applied to the surface. Subsequently,<br />
1/5 wave P/V was achieved. Currently a 18’ optic is being fabricated with this fiber.<br />
Author<br />
Carbon Fibers; Isotropy; Mass; Optical Equipment<br />
20040121119 Bennett Optical Research, Inc., Ridgecrest, CA, USA<br />
Fabrication <strong>and</strong> Testing of Active <strong>and</strong> Adaptive Cyanate Ester Composite Mirrors<br />
Bennett, H. E.; [2004]; 1 pp.; In English; Miror Technology Days (SD70 Website), 17-19 Aug. 2004, Huntsville, AL, USA<br />
Contract(s)/Grant(s): NAS8-02008; No Copyright; Avail: Other Sources; Abstract Only<br />
The objective of the <strong>NASA</strong>/Bennett Optical Research Inc. (BOR) NAS8-02008 Phase II Program, which also<br />
incorporated ideas developed under the earlier <strong>NASA</strong> NAS8-01035 Phase 1 Program, was to develop a large mirror fabrication<br />
<strong>and</strong> test facility with emphasis on producing large, light weight active <strong>and</strong> adaptive optics. A principle objective was to develop<br />
m<strong>and</strong>rels on which to make large composite graphite-filled cyanate ester mirrors, Deliverables were two of these superpolished<br />
lightweight active/adaptive optic composite mirrors, one 12’ (approx.1/3 meter) in diameter <strong>and</strong> one 22’ (approx.1/2 meter)<br />
in diameter. In addition optical superpolishers for m<strong>and</strong>rels up to 1.2 meters in diameter, test instruments for determining<br />
optical figure <strong>and</strong> scattered light, novel design actuators for making the composite mirrors both active <strong>and</strong> adaptive, <strong>and</strong><br />
passive <strong>and</strong> active means for measuring actuator performance were developed at BOR. We are now installing a superpolisher<br />
capable of producing 3 meter diameter mirror/m<strong>and</strong>rels. All polishers utilize the principle of centrifugal elutriation <strong>and</strong><br />
produce superpolished m<strong>and</strong>rels with surface microroughnesses under 1 nm rms.<br />
Author<br />
Adaptive Optics; Fabrication; Mirrors; Test Facilities<br />
75<br />
PLASMA PHYSICS<br />
Includes magnetohydrodynamics <strong>and</strong> plasma fusion. For ionospheric plasmas see 46 Geophysics. For space plasmas see 90<br />
Astrophysics.<br />
20040111048 <strong>NASA</strong> Johnson Space Center, Houston, TX, USA<br />
ISS Plasma Interaction: Measurements <strong>and</strong> Modeling<br />
Barsamian, H.; Mikatarian, R.; Alred, J.; Minow, J.; Koontz, S.; 8th Spacecraft Charging Technology Conference; March<br />
2004; 9 pp.; In English; See also 20040111031; No Copyright; Avail: CASI; A02, Hardcopy<br />
294
Change language