Photographed on: 05/25/2001. -- Slit screens scatter rejection mechanism. Photographed in building 1202.
Topic: TEST EQUIPMENT. -- IMAGING TECHNIQUES. -
Photographed on: 05/25/2001. -- Slit screens scatter rejection mechanism. Photographed in building 1202.
Topic: TEST EQUIPMENT. -- IMAGING TECHNIQUES. -
Photographed on: 05/25/2001. -- Slit screens scatter rejection mechanism. Photographed in building 1202.
Topic: TEST EQUIPMENT. -- IMAGING TECHNIQUES. -
238
238
Jul 11, 2010
07/10
by
Young, L. D. G.; Young, A. T.; Woszczyk, A
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eye 238
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Photographic plates of Venus which show the spectrum of the carbon dioxide band at 7820A were obtained at Table Mountain Observatory in September-October 1972. These spectra showed a semi-regular 4-day variation in the CO2 abundance over the disk of the planet. Evidence for temporal variations in the rotational temperature of this band and temperature variations over the disk was found. The two quantities, CO2 abundance and temperature, do not show any obvious relationship; however, an increase...
Topics: IMAGING TECHNIQUES, PHOTOGRAPHIC FILM, PRINTING, RESOLUTION, SEPARATION
321
321
Jun 13, 2011
06/11
by
NON
texts
eye 321
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System and method for optimization of a design associated with a response function, using a hybrid neural net and support vector machine (NN/SVM) analysis to minimize or maximize an objective function, optionally subject to one or more constraints. As a first example, the NN/SVM analysis is applied iteratively to design of an aerodynamic component, such as an airfoil shape, where the objective function measures deviation from a target pressure distribution on the perimeter of the aerodynamic...
Topics: X RAY TELESCOPES, CONSTELLATIONS, MIRRORS, SPECTROSCOPY, IMAGING TECHNIQUES
501
501
Jun 26, 2011
06/11
by
Vyas, Hemali; Brandel, Dan; Orr, Richard; Sands, O. Scot
texts
eye 501
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High-rate communications from Mars has significant but manageable challenges during the timeline 2020 to 2030. MRO sends data on X-band at rates as high as 5.3 Mbps. MRO could have been designed to send data at much higher rates than 5.3 Mbps over most Mars-Earth distances were it not for bandwidth limitations at X-band (ref. 3-1). The bandwidth issue is less severe at Ka-band. The deep space allocation for Ka-band is 500 MHz, compared with 50 MHz at X-band. This section discusses the various...
Topics: CHARGE COUPLED DEVICES, IMAGING TECHNIQUES, QUANTUM EFFICIENCY, PATENTS
Optical Imaging Techniques In Cell Biology Second Edition
Topic: Optical Imaging Techniques In Cell Biology Second Edition
241
241
May 29, 2011
05/11
by
McCrory, Jean L.; Derr, Janice; Cavanagh, Peter R
texts
eye 241
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This research compared ground reaction forces during overground (1G) running and zero-gravity ty (0G) simulated treadmill running at a full body weight load in two restraint harness designs.
Topics: SOLAR FLARES, X RAYS, POINT SOURCES, IMAGING TECHNIQUES, SPECTROSCOPY
2,185
2.2K
May 28, 2011
05/11
by
NON
texts
eye 2,185
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This handbook presents ''Before This Decade Is Out...'' Personal Reflections on the Appolo Program. The accounts included in this book are a small sampling of the large number of oral histories that have been conducted under the auspices of the NASA history program, since near the beginning of the Agency. They also represent the many personal contributions made during Project Apollo, the single largest peacetime endeavor in American history. These recollections span the origins, management, and...
Topics: IMAGING TECHNIQUES, SOLAR FLARES, COLLIMATORS, X RAYS, SPECTROSCOPY, ROTATION
741
741
May 29, 2011
05/11
by
NON
texts
eye 741
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The Microgravity Measurements Group meetings provide a forum for an exchange of information and ideas about various aspects of microgravity acceleration research in international microgravity research programs. These meetings are sponsored by the PI Microgravity Services (PIMS) project at the NASA Glenn Research Center. The 19th MGMG meeting was held 11-13 July 2000 at the Sheraton Airport Hotel in Cleveland, Ohio. The 44 attendees represented NASA, other space agencies, universities, and...
Topics: CHLOROPHYLLS, IMAGING TECHNIQUES, PLANTS (BOTANY), CAMERAS, PLANT STRESS, PATENTS
284
284
Jun 26, 2011
06/11
by
NON
texts
eye 284
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A space vehicle thermal heat rejection system 10 utilizing separate optimized heat pipe components for the functions of heat acquisition, heat transport, and heat rejection. A honeycomb panel heat pipe evaporator section 20 performs the function of heat acquisition, and forms a closed thermodynamic system with a dual channel heat pipe transport section 30, which performs the function of heat transport. A plurality of truss or channel core heat pipe rejection fins 41 form the condenser section...
Topics: HIGH SPEED CAMERAS, IMAGING TECHNIQUES, NUCLEAR MEDICINE, PHOTONS, PATENTS
519
519
May 31, 2011
05/11
by
NON
texts
eye 519
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During our lives we lose our innocence and gain experience about the world on myriad occasions. What do we learn about ourselves from this Uncomfortable as such occasions may be when they occur, reflective practitioners will see them later on for what they are: terrific opportunities to learn. Experience may come by way of profound moments of change, or occur over long stretches of time by the steady accrual of small changes. Change doesn't occur any less often as we get older, but a lifetime...
Topics: HIGH RESOLUTION, SPATIAL RESOLUTION, RADIOMETERS, CALIBRATING, IMAGING TECHNIQUES, TARGETS
306
306
Jul 11, 2010
07/10
by
NON
texts
eye 306
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A solar powered pump particularly suited for intermittently delivering a stream of water is reported. The pump is characterized by a housing adapted to be seated in a source of water having a water discharge port disposed above the water line of the source, a sump including a valved inlet port through which water is introduced to the sump, disposed beneath the water line, a displacer supported for vertical reciprocation in said housing, an air passageway extended between the vertically spaced...
Topics: HOLOGRAPHY, LASERS, NONDESTRUCTIVE TESTS, APPROXIMATION, IMAGING TECHNIQUES, PREDICTION ANALYSIS...
891
891
May 22, 2011
05/11
by
Goldberg, B. E.; Everhart, K.; Stevens, R.; Babbitt, N., III; Clemens, P.; Stout, L
texts
eye 891
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This system engineering toolbox is designed to provide tools and methodologies to the design-oriented systems engineer. A tool is defined as a set of procedures to accomplish a specific function. A methodology is defined as a collection of tools, rules, and postulates to accomplish a purpose. For each concept addressed in the toolbox, the following information is provided: (1) description, (2) application, (3) procedures, (4) examples, if practical, (5) advantages, (6) limitations, and (7)...
Topics: ATMOSPHERIC CHEMISTRY, ATMOSPHERIC PHYSICS, IMAGING TECHNIQUES, NARROWBAND, SPECTRA, METEOROLOGY,...
430
430
Jul 6, 2010
07/10
by
GABRIEL, M
texts
eye 430
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THE PIGMENTS OF THE BOLETUS AND THE CORTINARIA ARE STUDIED. ALMOST ALL OF THE BOLETACEAE, GOMPHIDIACEAE AND PAXILLACEAE IN THE FRENCH FLORA AND A CERTAIN NUMBER OF CORTINARIA WERE USED IN THE STUDY. THE CHEMICAL CHARACTERISTICS OF THE PIGMENTS ARE PRESENTED, AND THE SYSTEMATIC INTERESTS OF THESE PIGMENTS ARE DISCUSSED.
Topics: CONFERENCES, LANDSAT SATELLITES, IMAGING TECHNIQUES, LAND USE, TECHNOLOGY ASSESSMENT, UTILIZATION
281
281
Jun 21, 2010
06/10
by
Gallant, R. P.; Holzhavser, C. A.; Innis, R. C
texts
eye 281
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IFR flight tests of Breguet 941 STOL transport
Topics: COMPUTERS, IMAGING TECHNIQUES, MEDICAL SCIENCE, PHOTOMICROGRAPHY, RADIOGRAPHY, BIOLOGY, ELECTRONIC...
241
241
Jul 11, 2010
07/10
by
Sturrock, P. A
texts
eye 241
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A model of the plasma focus is considered, in which large axial electric fields are induced by the imploding current sheet during the final few nanoseconds of the collapse phase. This field provides a mechanism for creation of a beam of electrons of highly suprathermal energies. For this beam, the bremsstrahlung radiation is calculated, which is expected either from electron-deuteron collisions in the focused plasma itself or from the beam as it reaches the walls of the device. Comparison with...
Topics: PHOTOGRAPHIC DEVELOPERS, PHOTOGRAPHIC FILM, REPRODUCTION (COPYING), IMAGING TECHNIQUES,...
749
749
Jul 11, 2010
07/10
by
NON
texts
eye 749
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The proceedings of the NASA IRE Resistant Materials Engineering (FIREMEN) Program held at Boeing Commercial Airplane Company, Seattle, Washington, on March 1-2, 1979 are reported. The conference was to discuss the results of research by the National Aeronautics and Space Administration in the field of aircraft fire safety and fire-resistant materials. The program topics include the following: (1) large-scale testing; (2) fire toxicology; (3) polymeric materials; and (4) fire modeling.
Topics: CONTAMINATION, MICROORGANISMS, PARTICULATE SAMPLING, DENSITOMETERS, IMAGING TECHNIQUES,...
338
338
May 27, 2011
05/11
by
Mort, Kenneth W.; Soderman, Paul T.; Eckert, William T
texts
eye 338
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Interagency studies conducted during the last several years have indicated the need to Improve full-scale testing capabilities. The studies showed that the most effective trade between test capability and facility cost was provided by re-powering the existing Ames Research Center 40- by 80-ft Wind Tunnel to Increase the maximum speed from about 100 m/s (200 knots) lo about 150 m/s (300 knots) and by adding a new 24- by 37-m (80- by 120-ft) test section powered for about a 50-m/s (100-knot)...
Topics: BROADBAND, IMAGING TECHNIQUES, DATA SYSTEMS, DATA ACQUISITION, SOLID STATE, COMPUTER TECHNIQUES
466
466
Jul 11, 2010
07/10
by
NON
texts
eye 466
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This report presents the derivation, description, and operating instructions for a computer program (TEKVAL) which measures the economic value of advanced technology features applied to long range commercial passenger aircraft. The program consists of three modules; and airplane sizing routine, a direct operating cost routine, and an airline return-on-investment routine. These modules are linked such that they may be operated sequentially or individually, with one routine generating the input...
Topics: FLUOROSCOPY, IMAGING TECHNIQUES, RADIOLOGY, MICRODENSITOMETERS, PATTERN RECOGNITION, RADIOBIOLOGY,...
435
435
May 30, 2011
05/11
by
Markgraf, M.; Montenbruck, O.; Hassenpflug, F.; Turner, P.; Bull, B
texts
eye 435
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This paper describes the development as well as the on-ground and the in-flight evaluation of a low cost Global Positioning System (GPS) system for real-time tracking of sounding rockets. The flight unit comprises a modified ORION GPS receiver and a newly designed switchable antenna system composed of a helical antenna in the rocket tip and a dual-blade antenna combination attached to the body of the service module. Aside from the flight hardware a PC based terminal program has been developed...
Topics: TETHERING, IMAGING TECHNIQUES, ASTRONOMICAL INTERFEROMETRY, SEGMENTED MIRRORS, HIGH RESOLUTION,...
243
243
May 23, 2011
05/11
by
Gotsis, P. K.; Chamis, C. C.; Minnetyan, L
texts
eye 243
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Defect-free and defected composite thin shells with ply orientation (90/0//-75) made of graphite/epoxy are simulated for damage progression and fracture due to internal pressure and axial loading. The thin shells have a cylindrical geometry with one end fixed and the other free. The applied load consists of an internal pressure in conjunction with an axial load at the free end, the cure temperature was 177 C (350 F) and the operational temperature was 21 C (70 F). The residual stresses due to...
Topics: SOLAR FLARES, SUN, IMAGING TECHNIQUES, FORBUSH DECREASES, SUNSPOTS, X RAYS, COLLIMATORS
284
284
Jun 26, 2011
06/11
by
NON
texts
eye 284
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A multi-layered, thin-film, digital memory having associative recall. There is a first memory matrix and a second memory matrix. Each memory matrix comprises, a first layer comprising a plurality of electrically separated row conductors; a second layer comprising a plurality of electrically separated column conductors intersecting but electrically separated from the row conductors; and, a plurality of resistance elements electrically connected between the row condutors and the column conductors...
Topics: COHERENT RADIATION, DETECTION, FREQUENCIES, IMAGING TECHNIQUES, PLANE WAVES, RADIATION SOURCES,...
300
300
Jun 9, 2011
06/11
by
Kumosa, M.; Armentrout, D.; Rupnowski, P.; Kumosa, L.; Shin, E.; Sutter, J. K
texts
eye 300
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The application of the Iosipescu shear test for the room and high temperature failure analyses of the woven graphite/polyimide composites with the medium (T-650) and igh (M40J and M60J) modulus graphite fibers is discussed. The M40J/PMR-II-50 and M60J/PMR-II-50 composites were tested as supplied and after thermal conditioning. The effect of temperature and conditioning on the initiation of intralaminar damage and the shear strength of the composites was established.
Topics: SPACEBORNE TELESCOPES, MIRRORS, OPTICAL EQUIPMENT, IMAGING TECHNIQUES, COMPOSITE STRUCTURES,...
402
402
Jun 2, 2011
06/11
by
Ryan, Robert; Pagnutti, Mary; Zanoni, Vicki; Harrington, Gary; Howell, Dane; Stewart, Rand
texts
eye 402
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The utility of a thermal remote sensing system increases with it's ability to retrieve surface temperature or radiance accurately. The radiometer measures the water surface radiant temperature. Combining these measurements with atmospheric pressure, temperature, and water vapor profiles, a top-of-the-atmosphere tradiance estimate can be caluclated with a radiativer transfer code to compare to trhe sensor's output. A novel approach has been developed using an uncooled infrared camera mounted on...
Topics: IMAGING TECHNIQUES, ROTATION, HIGH RESOLUTION, REAL TIME OPERATION, SCANNERS, COMPUTERS, BONES,...
2
2.0
texts
eye 2
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233 pages : 23 cm
Topics: Imaging systems in medicine, Diagnostic imaging, Bildverarbeitung, Medizin, IMAGING TECHNIQUES,...
659
659
May 29, 2011
05/11
by
Hanson, John M
texts
eye 659
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comment 0
The goals of this project are to significantly reduce the time and cost associated with guidance and control design for reusable launch vehicles, and to increase their safety and reliability. Success will lead to reduced cycle times during vehicle design and to reduced costs associated with flying to new orbits, with new payloads, and with modified vehicles. Success will also lead to more robustness to unforeseen circumstances in flight thereby enhancing safety and reducing risk. There are many...
Topics: GLOBAL POSITIONING SYSTEM, IMAGING TECHNIQUES, IONOSPHERIC PROPAGATION, ASSIMILATION, RADIO...
495
495
Jun 2, 2011
06/11
by
Levri, Julie; Fisher, John W.; Jones, Harry W.; Drysdale, Alan E.; Ewert, Michael K.; Hanford, Anthony J.; Hogan, John A.; Joshi, Jitendri, A.; Vaccari, David A
texts
eye 495
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This document is a viewgraph presentation which provides guidelines for performing an Equivalent System Mass (ESM) evaluation for trade study purposes. The document: 1) Defines ESM; 2) Explains how to calculate ESM; 3) Discusses interpretation of ESM results. The document is designed to provide detailed instructive material for researchers who are performing ESM evaluations for the first time.
Topics: IMAGING TECHNIQUES, REMOTE SENSING, LANDSAT 7, EARTH SCIENCES, SPATIAL RESOLUTION, ARTIFICIAL...
An interferometer objective lens (or diverger) may be used to transform a collimated beam into a diverging or converging beam. This innovation provides an objective lens that has diffraction-limited optical performance that is optimized at two sets of conjugates: imaging to the objective focus and imaging to the pupil. The lens thus provides for simultaneous delivery of a high-quality beam and excellent pupil resolution properties.
Topics: NASA Technical Reports Server (NTRS), IMAGING TECHNIQUES, LENSES, GHOSTS, INTERFEROMETERS, PUPILS,...
776
776
May 27, 2011
05/11
by
Hebsur, Mohan G
texts
eye 776
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Intermetallic compound MoSi2 has long been known as a high temperature material that has excellent oxidation resistance and electrical/thermal conductivity. Also its low cost, high melting point (2023 C), relatively low density (6.2 g/cu cm versus 9 g/cu cm for current engine materials), and ease of machining, make it an attractive structural material. However, the use of MoSi2 has been hindered due to its poor toughness at low temperatures, poor creep resistance at high temperatures, and...
Topics: IMAGING TECHNIQUES, RISK, SATELLITE IMAGERY, INFECTIOUS DISEASES, EPIDEMIOLOGY, VEGETATION,...
292
292
Jun 13, 2011
06/11
by
Peters, Brian T.; vanEmmerik, Richard E. A.; Bloomberg, Jacob J
texts
eye 292
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Horizontal head movements were studied in six subjects as they made rapid horizontal gaze adjustments while walking. The aim of the present research was to determine if gait-cycle events alter the head movement response to a visual target acquisition task. Gaze shifts of approximately 40deg were elicited by a step change in the position of a visual target from a central location to a second location in the left or right horizontal periphery. The timing of the target position change was...
Topics: IMAGING TECHNIQUES, INTERFEROMETRY, RAMAN SPECTRA, RAYLEIGH SCATTERING, FABRY-PEROT...
336
336
May 31, 2011
05/11
by
Lee, Kang N
texts
eye 336
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Current environmental barrier coatings (EBCs) consist of multiple layers, with each layer having unique properties to meet the various requirements for successful EBCs. As a result, chemical and thermal expansion compatibility between layers becomes an important issue to maintaining durability. Key constituents in current EBCs are mullite (3Al2O3-2SiO2), BSAS (BaO(1-x)-SrO(x)-Al2O3-2SiO2), and YSZ (ZrO2-8 wt.% Y2O3). The mullite-BSAS combination appears benign although significant diffusion...
Topics: IMAGING TECHNIQUES, TECHNOLOGY TRANSFER, TECHNOLOGY UTILIZATION, MEDICAL SCIENCE, EYE (ANATOMY),...
427
427
May 27, 2011
05/11
by
Carruth, M. Ralph; Clifton, Kenneth S
texts
eye 427
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The first elements of the International Space Station (ISS) will soon be launched into space and over the next few years ISS will be assembled on orbit into its final configuration. Experiments will be performed on a continuous basis both inside and outside the station. External experiments will be mounted on attached payload locations specifically designed to accommodate experiments, provide data and supply power from ISS. From the beginning of the space station program it has been recognized...
Topics: IMAGING TECHNIQUES, SHOEMAKER-LEVY 9 COMET, CHARGE COUPLED DEVICES, TELESCOPES, JUPITER (PLANET),...
296
296
Jul 5, 2010
07/10
by
Golovina, L. G.; Deych, M. Y.; Zaryankin, A. Y.; Ett, V. V
texts
eye 296
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A detailed study is presented of the flow structure in the inlet section of diffusor, where the transition from a cylindrical channel to a conical channel occurs. The effect of the aperture angle of the diffusor on the occurrence of flow separation is noted, as well as the existence of a considerable nonuniformity of the flow in the transverse direction. It is shown that the local positive pressure gradients in the diffusor in the presence of a corner bend or a section of great steepness at the...
Topics: HILBERT TRANSFORMATION, IMAGING TECHNIQUES, PHASE CONTRAST, DIFFRACTION, INTERFEROMETRY,...
387
387
May 22, 2011
05/11
by
NON
texts
eye 387
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Mount Rainier is one of about two dozen active or recently active volcanoes in the Cascade Range, an arc of volcanoes in the northwestern United States and Canada. The volcano is located about 35 kilometers southeast of the Seattle-Tacoma metropolitan area, which has a population of more than 2.5 million. This metropolitan area is the high technology industrial center of the Pacific Northwest and one of the commercial aircraft manufacturing centers of the United States. The rivers draining the...
Topics: COLOR, MORPHOLOGY, VIABILITY, GERMINATION, IMAGE ENHANCEMENT, PHYTOTRONS, RADIOGRAPHY, SEEDS,...
187
187
Jun 12, 2011
06/11
by
Aller, Margo F
texts
eye 187
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This work represents a part of a long-term study of the X-ray flux variability of 3C 120 and its relation to flux and structural changes in the radio jet of this galaxy. The grant included fiinding for the rediiction and analysis of data obt,ained during the time pwiod of Rossi XTE cycle 8 (March 1, 2003-February 29, 2004). Prior RXTE observations, combined with single dish monitoring at centimeter wavelengths and 43 GHz mapping (monthly until February 1999 and bimonthly thereafter) of the...
Topics: DATA BASES, COORDINATES, GEODESY, IMAGING TECHNIQUES, GEOLOGY, REMOTE SENSING, GEOLOGICAL SURVEYS,...
259
259
Jun 2, 2011
06/11
by
Welton, Ellsworth J.; Campbell, James R.; Spinhirne, James D.; Berkoff, Timothy A.; Holben, Brent; Tsay, Si-Che
texts
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We present the formation of a new global-ground based eye-safe lidar network, the NASA Micro-Pulse Lidar Network (MPLNET). The aim of MPLNET is to acquire long- term observations of aerosol and cloud vertical profiles at unique geographic sites within the NASA Aerosol Robotic Network (AERONET). MPLNET utilizes standard instrumentation and data processing algorithms for efficient network operations and direct comparison of data between each site. The micro-pulse lidar is eye-safe, compact, and...
Topics: VISUAL TASKS, IMAGE MOTION COMPENSATION, SEGMENTS, MOTION, DETECTORS, SIGNAL DETECTION,...
238
238
Jun 27, 2010
06/10
by
Rom, F. E.; Wachtl, W. W
texts
eye 238
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No Abstract Available
Topics: IMAGING TECHNIQUES, OPTICAL PATHS, PHASE CONTRAST, LASERS, MATHEMATICAL MODELS, MEASURING...
317
317
Jul 11, 2010
07/10
by
Brockett, R. W.; Wood, J. R
texts
eye 317
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The work in power processing is reported. Input-output models, and Lie groups in control theory are discussed along with the methods of analysis for time invariant electrical networks.
Topics: PHOTOGRAPHIC FILM, PHOTOGRAPHIC PROCESSING, SKYLAB PROGRAM, SPACEBORNE PHOTOGRAPHY, IMAGING...
322
322
Jun 3, 2011
06/11
by
Sokol, Jeff; Krishnan, Satish; Ayari, Laouce
texts
eye 322
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The High Gain Antenna Assemblies built for the 2003-2004 Mars Exploration Rover (MER) missions provide the primary communication link for the Rovers once they arrive on Mars. The High Gain Antenna Gimbal (HGAG) portion of the assembly is a two-axis gimbal that provides the structural support, pointing, and tracking for the High Gain Antenna (HGA). The MER mission requirements provided some unique design challenges for the HGAG. This paper describes all the major subsystems of the HGAG that were...
Topics: MICROWAVE INTERFEROMETERS, FOURIER TRANSFORMATION, IMAGING TECHNIQUES, MICROWAVE IMAGERY, THEOREMS,...
261
261
Jun 12, 2011
06/11
by
Marscher, Alan P.; Jorstad, Svetlana G.; Aller, Marg
texts
eye 261
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The work completed includes the analysis of observations obtained during Cycle 7 (March 2002-February 2003) of the Rossi X-ray Timing Explorer (RXTE). The project was part of a longer-term, continuing program to study the X-ray emission process in blazars and radio galaxies in collaboration with Dr. Ian McHardy (U. of Southampton, UK) and Prof. Thomas Balonek (Colgate U.). The goals of the program are to study the X-ray emission mechanism in blazars and radio galaxies and the relation of the...
Topics: REMOTE SENSING, LITHOLOGY, MINERALOGY, CORES, DRILLING, BIOASSAY, MINERALS, IDENTIFYING, GROUND...
13
13
texts
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volumes : 25 cm
Topics: Optical instruments, Optics, Technische Optik, OPTICS, IMAGING TECHNIQUES, OPTICAL MEASURING...
396
396
May 31, 2011
05/11
by
Acquisti, Alessandro; Sierhuis, Maarten; Clancey, William J.; Bradshaw, Jeffrey M
texts
eye 396
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The International Space Station is one the most complex projects ever, with numerous interdependent constraints affecting productivity and crew safety. This requires planning years before crew expeditions, and the use of sophisticated scheduling tools. Human work practices, however, are difficult to study and represent within traditional planning tools. We present an agent-based model and simulation of the activities and work practices of astronauts onboard the ISS based on an agent-oriented...
Topics: CORDAGE, PROCEDURES, DEPLOYMENT, KEVLAR (TRADEMARK), STRETCHING, TUNERS, DAMAGE, FAILURE, IMAGING...
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459
May 27, 2011
05/11
by
NON
texts
eye 459
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The Aviation Safety Program initiated by NASA in 1997 has put greater emphasis in safety related research activities. Ice-contaminated-tailplane stall (ICTS) has been identified by the NASA Lewis Icing Technology Branch as an important activity for aircraft safety related research. The ICTS phenomenon is characterized as a sudden, often uncontrollable aircraft nose- down pitching moment, which occurs due to increased angle-of-attack of the horizontal tailplane resulting in tailplane stall....
Topics: IMAGING TECHNIQUES, COMPUTER TECHNIQUES, DATA ACQUISITION, DATA SYSTEMS, SPACECRAFT COMPONENTS,...
To image and characterize exoplanets, Goddard Space Flight Center turned to deformable mirrors (DMs). Berkeley, California-based Iris AO, Inc. worked with Goddard through the SBIR program to improve the company’s microelectromechanical DMs, which are now being evaluated and used for biological research, industrial applications, and could even be used by drug manufacturers.
Topics: NASA Technical Reports Server (NTRS), EXTRASOLAR PLANETS, DEFORMABLE MIRRORS, LASERS, IMAGING...
The Jet Propulsion Laboratory contracted Malin Space Science Systems Inc. to outfit Curiosity with four of its cameras using the latest commercial imaging technology. The company parlayed the knowledge gained under working with NASA to develop an off-the-shelf line of cameras, along with a digital video recorder, designed to help troubleshoot problems that may arise on satellites in space.
Topics: NASA Technical Reports Server (NTRS), AEROSPACE SYSTEMS, CAMERAS, DIGITAL TELEVISION, IMAGING...
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1.3K
Jun 11, 2011
06/11
by
NON
texts
eye 1,308
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This document is a compilation of the scientific and technical information that the Langley Research Center has produced during the calendar year 2003. Included are citations for Special Publications, Technical Publications, Conference Publications, Technical Memorandums, Contractor Reports, Journal Articles and Book Publications, Meeting Presentations, Technical Talks, and Patents.
Topics: EROSION, PLANETARY EVOLUTION, IMAGING TECHNIQUES, MARS (PLANET), MARS SURFACE, MARINER 9 SPACE...
270
270
May 31, 2011
05/11
by
Goyne, C. P.; McDaniel, J. C.; Quagliaroli, T. M.; Krauss, R. H.; Day, S. W.; Reubush, D. E
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Results of an experimental and numerical study of a dual-mode scramjet combustor are reported. The experiment consisted of a direct-connect test of a Mach 2 hydrogen-air combustor with a single unswept-ramp fuel injector. The flow stagnation enthalpy simulated a flight Mach number of 5. Measurements were obtained using conventional wall instrumentation and a particle-imaging laser diagnostic technique. The particle imaging was enabled through the development of a new apparatus for seeding fine...
Topics: TELESCOPES, GAMMA RAYS, IMAGING TECHNIQUES, SCINTILLATING FIBERS, SPECTROSCOPY, ENERGY TECHNOLOGY,...
208
208
Jun 2, 2011
06/11
by
Rigby, David L
texts
eye 208
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A two-dimensional multi-block topology generation technique has been developed. Very general configurations are addressable by the technique. A configuration is defined by a collection of non-intersecting closed curves, which will be referred to as loops. More than a single loop implies that holes exist in the domain, which poses no problem. This technique requires only the medial vertices and the touch points that define each vertex. From the information about the medial vertices, the...
Topics: ALGORITHMS, STATISTICAL TESTS, INTERPOLATION, DIGITAL ELEVATION MODELS, PACIFIC ISLANDS, IMAGING...
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Jul 11, 2010
07/10
by
VOLOSEVICH, A. V.; LIPEROVSKIY, V. A.; SVERDLOV, Y. L
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THEORETICAL WORK DEALING WITH THE POSSIBLE TYPES OF PLASMA INSTABILITIES ASSOCIATED WITH CURRENTS, FLUXES OF INCOMING PARTICLES, AND ELECTRON DENSITY GRADIENTS IS DISCUSSED WITH REFERENCE TO THE POLAR IONOSPHERE. THE THEORY DEVELOPED UP TO THE PRESENT TIME EXPLAINS IN GENERAL TERMS THE PROPERTIES OF THE OBSERVED RADIO REFLECTIONS.
Topics: CHANNELS (DATA TRANSMISSION), DATA TRANSMISSION, IMAGING TECHNIQUES, SIGNAL ENCODING, INFORMATION...
