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ship’s hull, to generate pitch motion, and to command the CAWP in accordance with conventional hierarchical control. SAPACS is able to move along the ship hull with operator supervision but without operator direction. NTIS Antifouling; Containment; Corrosion; Paints 20040071048 Battelle Columbus Labs., OH Evaluation of Chemically Bonded Phosphate Ceramics for Mercury Stabilization of a Mixed Synthetic Waste Chattopadhyay, S.; Randall, P. M.; Mar. 2003; In English Report No.(s): PB2004-103500; EPA/600/R-03/113; No Copyright; Avail: National Technical Information Service (NTIS) No abstract available Waste Treatment; Mercury (Metal) 20040073448 NASA Langley Research Center, Hampton, VA, USA Modeling the VARTM Composite Manufacturing Process Song, Xiao-Lan; Loos, Alfred C.; Grimsley, Brian W.; Cano, Roberto J.; Hubert, Pascal; [2004]; 13 pp.; In English; SAMPE 2004 Symposium and Exhibition, 16-20 May 2004, Long Beach, CA, USA Contract(s)/Grant(s): NCC1-01037; 719-55-TB; No Copyright; Avail: CASI; A03, Hardcopy A comprehensive simulation model of the Vacuum Assisted Resin Transfer Modeling (VARTM) composite manufacturing process has been developed. For isothermal resin infiltration, the model incorporates submodels which describe cure of the resin and changes in resin viscosity due to cure, resin flow through the reinforcement preform and distribution medium and compaction of the preform during the infiltration. The accuracy of the model was validated by measuring the flow patterns during resin infiltration of flat preforms. The modeling software was used to evaluate the effects of the distribution medium on resin infiltration of a flat preform. Different distribution medium configurations were examined using the model and the results were compared with data collected during resin infiltration of a carbon fabric preform. The results of the simulations show that the approach used to model the distribution medium can significantly effect the predicted resin infiltration times. Resin infiltration into the preform can be accurately predicted only when the distribution medium is modeled correctly. Author Manufacturing; Composite Materials; Resins; Technology Assessment 20040073457 NASA Langley Research Center, Hampton, VA, USA Flame Retardant Epoxy Resins Thompson, C. M.; Smith, J. G., Jr.; Connell, J. W.; Hergenrother, P. M.; Lyon, R. E.; [2004]; 13 pp.; In English; SAMPE 2004 Symposium and Exhibition, 16-20 May 2004, Long Beach, CA, USA Contract(s)/Grant(s): 23-755-06-00; No Copyright; Avail: CASI; A03, Hardcopy As part of a program to develop fire resistant exterior composite structures for future subsonic commercial aircraft, flame retardant epoxy resins are under investigation. Epoxies and their curing agents (aromatic diamines) containing phosphorus were synthesized and used to prepare epoxy formulations. Phosphorus was incorporated within the backbone of the epoxy resin and not used as an additive. The resulting cured epoxies were characterized by thermogravimetric analysis, propane torch test, elemental analysis and microscale combustion calorimetry. Several formulations showed excellent flame retardation with phosphorous contents as low as 1.5% by weight. The fracture toughness of plaques of several cured formulations was determined on single-edge notched bend specimens. The chemistry and properties of these new epoxy formulations are discussed. Author Chemical Analysis; Combustion; Composite Structures; Epoxy Resins; Fires; Flame Retardants 20040073473 NASA Glenn Research Center, Cleveland, OH, USA Oxidation of Ultra High Temperature Ceramics in Water Vapor Nguyen, QuynhGiao N.; Opila, Elizabeth J.; Robinson, Raymond C.; April 2004; 20 pp.; In English; 203rd Meeting of the Electrochemical Society, Inc., 27 Apr. - 2 May 2003, Paris, France Contract(s)/Grant(s): WBS 714-04-34 Report No.(s): NASA/TM-2004-212923; E-14363; No Copyright; Avail: CASI; A03, Hardcopy Ultra High Temperature Ceramics (UHTCs) including HfB2 + 20v/0 SiC (HS), ZrB2 + 20v/0 SiC (ZS), and ZrB2 + 30v/0 C + 14v/0 SiC (ZCS) have been investigated for use as potential aeropropulsion engine materials. These materials were 61
oxidized in water vapor (90 percent) using a cyclic vertical furnace at 1 atm. The total exposure time was 10 h at temperatures of 1200, 1300, and 1400 C. CVD SiC was also evaluated as a baseline for comparison. Weight change, X-ray diffraction analyses, surface and cross-sectional SEM and EDS were performed. These results are compared with tests ran in a stagnant air furnace at temperatures of 1327 C for 100 min, and with high pressure burner rig (HPBR) results at 1100 and 1300 C at 6 atm for 50 h. Low velocity water vapor does not make a significant contribution to the oxidation rates of UHTCs when compared to stagnant air. The parabolic rate constants at 1300 C, range from 0.29 to 16.0 mg(sup 2)cm(sup 4)/h for HS and ZCS, respectively, with ZS results between these two values. Comparison of results for UHTCs tested in the furnace in 90 percent water vapor with HPBR results was difficult due to significant sample loss caused by spallation in the increased velocity of the HPBR. Total recession measurements are also reported for the two test environments. Author Ceramics; Water Vapor; Refractory Materials; Oxidation; Combustion 20040073511 NASA Marshall Space Flight Center, Huntsville, AL, USA Reduction of Defects in Germanium-Silicon Biological and Physical Space Research Laboratory 2002 Science Review; December 2003, pp. 14; In English; See also 20040073490; No Copyright; Abstract Only; Available from CASI only as part of the entire parent document Crystals grown without contact with a container have far superior quality to otherwise similar crystals grown in direct contact with a container. In addition to float-zone processing, detached- Bridgman growth is a promising tool to improve crystal quality, without the limitations of float zoning or the defects introduced by normal Bridgman growth. Goals of this project include the development of the detached Bridgman process to be reproducible and well understood and to quantitatively compare the defect and impurity levels in crystals grown by these three methods. Germanium (Ge) and germanium-silicon (Ge-Si) alloys are being used. At MSFC, we are responsible for the detached Bridgman experiments intended to differentiate among proposed mechanisms of detachment, and to confirm or refine our understanding of detachment. Because the contact angle is critical to determining the conditions for detachment, the sessile drop method was used to measure the contact angles as a function of temperature and composition for a large number of substrates made of potential ampoule materials. Growth experiments have used pyrolytic boron nitride (pBN) and fused silica ampoules with the majority of the detached results occurring predictably in the pBN. Etch pit density (EPD) measurements of normal and detached Bridgman-grown Ge samples show a two order of magnitude improvement in the detached-grown samples. The nature and extent of detachment is determined by using profilometry in conjunction with optical and electron microscopy. The stability of detachment has been analyzed, and an empirical model for the conditions necessary to achieve sufficient stability to maintain detached growth for extended periods has been developed. We have investigated the effects on detachment of ampoule material, pressure difference above and below the melt, and Si concentration; samples that are nearly completely detached can be grown repeatedly in pBN. Current work is concentrated on developing a method to make in situ pressure measurements in the growth ampoules. Author Crystal Growth; Bridgman Method 20040073515 NASA Marshall Space Flight Center, Huntsville, AL, USA Succinonitrile Purification Facility Biological and Physical Space Research Laboratory 2002 Science Review; December 2003, pp. 20; In English; See also 20040073490; No Copyright; A01, Hardcopy; Abstract only; available from CASI only as part of the entire parent document. The Succinonitrile (SCN) Purification Facility provides succinonitrile and succinonitrile alloys to several NRA selected investigations for flight and ground research at various levels of purity. The purification process employed includes both distillation and zone refining. Once the appropriate purification process is completed, samples are characterized to determine the liquidus and/or solidus temperature, which is then related to sample purity. The lab has various methods for measuring these temperatures with accuracies in the milliKelvin to tenths of milliKelvin range. The ultra-pure SCN produced in our facility is indistinguishable from the standard material provided by NIST to well within the stated +/- 1.5mK of the NIST triple point cells. In addition to delivering material to various investigations, our current activities include process improvement, characterization of impurities and triple point cell design and development. The purification process is being evaluated for each of the four vendors to determine the efficacy of each purification step. We are also collecting samples of the remainder from distillation and zone refining for analysis of the constituent impurities. The large triple point cells developed will contain SCN with a melting point of 58.0642 C +/- 1.5mK for use as a calibration standard for Standard Platinum Resistance Thermometers (SPRTs). Author Succinonitrile; Purification 62
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NASA STI Program ... in Profile Sin
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NASA STI Availability Information N
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Geosciences 43 Earth Resources and
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SCIENTIFIC AND TECHNICAL AEROSPACE
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iced airfoils. The software was app
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concerning the operation of aircraf
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nitrides. There are over 60 of thes
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With the increasing use of fiber-re
Page 18 and 19: 20040071101 Texas Univ., Austin, TX
Page 20 and 21: 20040073643 Naval Research Lab., St
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Page 24 and 25: instrumentation is needed to improv
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Page 36 and 37: experience gained from the morning
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Page 40 and 41: (IPD) program, and the Hybrid Sound
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Page 44 and 45: ehavior and the resulting damage me
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Page 52 and 53: zone permeability. Two full-scale P
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Page 56 and 57: needed for validation of a detailed
Page 58 and 59: 20040073730 Stanford Univ., Stanfor
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Page 62 and 63: Prior studies of Alloy 600 and Allo
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Page 72 and 73: 28 PROPELLANTS AND FUELS Includes r
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Page 82 and 83: y applying the doctrine of maneuver
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solution. The sensor responds prope
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noise. Multiplexers for large numbe
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20040074303 Cologne Univ., Germany
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20040073556 Florida State Univ., Ta
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otor and blades, were found to be i
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local wave-form changes associated
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limited number of geometries. The r
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20040071005 NASA Marshall Space Fli
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Commercial Instrument Validation La
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20040071082 Lockheed Martin Space O
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esolution specifications for new se
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and resistance of the cell has rema
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20040070745 ElectroChem, Inc., Wobu
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cell potential vs. current density
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20040070987 Lawrence Livermore Nati
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in the Earth’s climate system. Th
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the scientific questions of the rol
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20040073763 Georgia Tech Research I
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frontal systems approaching the Nam
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effects of climate change and urban
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forecasting weather in the vast, da
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that 100 tg of dust are transported
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effort to study the monsoons. The o
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looking at data files generated by
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Body weights of rat pups reared dur
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maltose, sucrose, starch and D-mann
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changes in SFOAEs due to noise can
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20040073582 Scripps Research Inst.,
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stratified random sample of 9,975 f
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The financial challenges associated
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The proposal entitled "Effects
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educe the acidosis that forms with
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Our hypothesis has been that four e
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health risks. Recent work in a vari
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20040073543 National Center of Hygi
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the movement, without the effects o
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incremental refinement of imagery w
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noise level that the process noise
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In this paper, we develop a time an
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variety of applications while facil
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20040070714 NASA Ames Research Cent
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20040070937 NASA Langley Research C
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Simulation (NPSS) software package.
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and Total Aircraft Tons, The result
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independent of communications bandw
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20040073701 Air Force Inst. of Tech
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capable tool with extensibility to
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their work became extraordinarily t
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20040074124 Naval Postgraduate Scho
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levels of autonomous operation and
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capabilities in a number of diverse
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This report documents the mechanica
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20040068141 NASA Ames Research Cent
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produced by SRTM. In particular, we
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20040073588 Forschungsinstitut fuer
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20040073595 Johns Hopkins Univ., La
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little from one frequency to the ne
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20040073610 Army Research Lab., Abe
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and dynamic errors. The Technical R
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partners, they tend to be involved
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20040073805 Naval Postgraduate Scho
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will be available for experiments i
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with other subsystems. Currents on
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20040070994 Lawrence Livermore Nati
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20040071060 Brookhaven National Lab
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tension. The binder material with m
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and high Earth orbit missions. 3. I
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20040073472 Taitech, Inc., Beavercr
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to be contaminated by errors caused
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uses a gold-black coating for optic
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water-leaving radiances will suppor
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We discuss the temporal and spectra
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induced transparency (EIT) in GaAs
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ecently completed a TPF Mission Arc
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International Thermal Detectors Wor
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calculated x-ray fluxes from the pr
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substantial groundwork with aluminu
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1979, when we decided it was time t
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in our competitive position resulti
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also work to foster increased trust
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of interacting with others while wo
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20040070865 Ford Motor Co., Dearbor
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and industry in the nation’s aero
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20040073532 Defense Manpower Data C
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it was found that information flow
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provided for consideration in the s
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This viewgraph presentation provide
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applications are re-factored into t
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where its calibration is maintained
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status of the development of SOFIA
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separation roughly constant. The li
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esonances involving the longitude o
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15-17, 2003 and hosted by the Insti
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scientific enthusiasm amongst Europ
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Bolocam, MAMBO) and the surveys of
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20040074293 Naval Research Lab., Wa
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The questions of greatest scientifi
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walls and more. I will also list wh
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al., which suggest considerable bla
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as is often invoked for black hole
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We report on the timing analysis of
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Space Flight Center, Greenbelt, MD,
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20040073754 Air Force Research Lab.
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A possible accretion model associat
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spectrally resolved application, la
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composition with unprecedented wave
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20040073504 NASA Marshall Space Fli
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20040068206 L-1 Standards and Techn
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individual flares. In addition, RHE
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93 SPACE RADIATION Includes cosmic
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perigee observations from 1 Decembe
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ABBREVIATIONS MSFC Space Station Pr
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AEROSPACE VEHICLES Application of S
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ANNOTATIONS An Annotated Bibliograp
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AUTOMATIC CONTROL Automated Modern
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BLOOD PRESSURE Flow Redistribution
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CATALOGS (PUBLICATIONS) The BATSE E
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COMBAT An Improvement to Situationa
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Speech Recognition Software; An Alt
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Proceedings of the Autonomous Vehic
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Effects of Fatigue on Simulation-Ba
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DOPPLER RADAR Interference Estimati
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ELECTROMAGNETIC WAVE TRANSMIS- SION
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EUROPE Future Far-IR Mission and Su
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Application of Non-Deterministic Me
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GALACTIC RADIATION A New Method to
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GUIDANCE SENSORS Advanced Video Gui
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HVOF THERMAL SPRAYING Replacement o
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INDUSTRIES The 10-Year Remote Sensi
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ION BEAMS Understanding Particle De
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LEVITATION An Overview of the Mater
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MAMMALS Coordinate Expression of th
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Structural Fluctuation and Thermoph
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MINERALOGY Perovskite Manganites: A
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NEBULAE IR Fine-Structure Line Sign
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OPTICAL MEASUREMENT Development of
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PHYSIOLOGICAL EFFECTS Characterizat
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PROCUREMENT Metrics to Monitor Gove
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RADAR CROSS SECTIONS Bandwidth Limi
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Automated Rendezvous and Capture Sy
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SEALING Strain-Life Assessment of G
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SMOG Brown Cloud Pollution and Smog
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SPACE TRANSPORTATION SYSTEM FLIGHTS
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STRESS CONCENTRATION Development of
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TANTALUM Densification of nanocryst
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Energy Release Rate in a Constraine
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TWO DIMENSIONAL MODELS An Investiga
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Properties of Longitudinal Flux Tub
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Abbas, M. M. Laboratory Experiments
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Auyeung, T. P. Design of a High Hea
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Bey, Kim S. A Discontinuous Galerki
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Brown, T. Individual Radiation Prot
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Chen, Yuan A Chip and Pixel Qualifi
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Crochetiere, William J. On the Use
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Dunn, J. Spectral and Imaging Chara
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Fournet, R. Chemical Kinetic Charac
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Giulianetti, Demo J. Aviation Syste
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Harris, Robert Comparing Methods fo
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Hua, Inez Environment Partitioning
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Khairoutdinov, M. Cloud-Resolving M
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LaConti, A. Some Recent Studies Wit
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Little, James E. Fuel-Flexible Gas
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Marsic, Damien Spirochaeta American
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Montgomery, Edward E, IV The Develo
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Nitao, E. N. Parameterization of In
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Phan, Kandy Q. Design and Implement
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Ren, Libo Dynamic Punch Shear Behav
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Schatz, Josh The Use of LS-DYNA in
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Sokolov, Sergey Assembly of Functio
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Talley, D. G. The Development of a
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Varakala, S. Facilitating Intellige
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Whipple, Kelin X. Relief Evolution
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Yen, Chian-Fong Dynamic Punch Shear
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