xi, 84 p. ; 28 cm
Topics: Atmospheric temperature -- Measurement, Urban temperature -- Alberta -- Calgary, Calgary (Alta.) --...
715
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Jun 3, 2011
06/11
by
Abdel-Magid, Becky M.; Gates, Thomas S
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Creep properties of IM7/K3B composite material were obtained using three accelerated test methods at elevated temperatures. Results of flexural creep tests using the dynamic mechanical analyzer (DMA) were compared with results of conventional tensile and compression creep tests. The procedures of the three test methods are described and the results are presented. Despite minor differences in the time shift factor of the creep compliance curves, the DMA results compared favorably with the...
Topics: MICROWAVES, CCD CAMERAS, OPTICAL DENSITY, IMAGING TECHNIQUES, REFLECTED WAVES, NEAR FIELDS, PLASMA...
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Sep 20, 2010
09/10
by
Ackerman, Thomas P.; Lin, Ruei-Fon
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The radiation field over a broken stratocumulus cloud deck is simulated by the Monte Carlo method. We conducted four experiments to investigate the main factor for the observed shortwave reflectively over the FIRE flight 2 leg 5, in which reflectivity decreases almost linearly from the cloud center to cloud edge while the cloud top height and the brightness temperature remain almost constant through out the clouds. From our results, the geometry effect, however, did not contribute significantly...
Topics: CAMERAS, SPACE PROCESSING, SWITCHING CIRCUITS, TEMPERATURE CONTROL, TEMPERATURE DISTRIBUTION,...
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May 6, 2010
05/10
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Adams, James H., Jr.; Dietrich, W. F.; Xapsos, M. A.; Welton, A. M
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eye 285
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Probabilistic Models of Solar Particle Events (SPEs) are used in space mission design studies to provide a description of the worst-case radiation environment that the mission must be designed to tolerate.The models determine the worst-case environment using a description of the mission and a user-specified confidence level that the provided environment will not be exceeded. This poster will focus on completing the existing suite of models by developing models for peak flux and event-integrated...
Topics: HYPERSONIC FLIGHT, MACH NUMBER, IN-FLIGHT MONITORING, THERMAL MAPPING, SHEAR STRESS, BOUNDARY LAYER...
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191
May 23, 2011
05/11
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Agosta-Greenman, Roxana M.; Gee, Ken; Cummings, Russell M.; Schiff, Lewis B
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The effect of tangential slot blowing on the flowfield about a generic chined forebody at high angles of attack is investigated numerically using solutions of the thin-layer, Reynolds-averaged, Navier-Stokes equations. The effects of jet mass now ratios, angle of attack, and blowing slot location in the axial and circumferential directions are studied. The computed results compare well with available wind-tunnel experimental data. Computational results show that for a given mass now rate, the...
Topics: FLOW MEASUREMENT, LIGHT BEAMS, YAG LASERS, ULTRAVIOLET RADIATION, TEMPERATURE MEASUREMENT, DENSITY...
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Jul 26, 2010
07/10
by
Alff, W. H.; Bandermann, L. W
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eye 280
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No Abstract Available
Topics: ELECTRICAL RESISTANCE, PRESSURE EFFECTS, LOW TEMPERATURE, RESISTORS, TEMPERATURE MEASUREMENT,...
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162
May 27, 2011
05/11
by
Alter-Gartenberg, Rache
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This report presents stereo image theory and the corresponding image processing software developed to analyze stereo imaging data acquired for the wake-vortex hazard flight experiment conducted at NASA Langley Research Center. In this experiment, a leading Lockheed C-130 was equipped with wing-tip smokers to visualize its wing vortices, while a trailing Boeing 737 flew into the wake vortices of the leading airplane. A Rockwell OV-10A airplane, fitted with video cameras under its wings, flew at...
Topics: AERODYNAMIC HEATING, MACH NUMBER, SUPERSONIC SPEED, TEMPERATURE MEASUREMENT, THICKNESS RATIO,...
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1.4K
Jun 17, 2010
06/10
by
Alvermann, W.; Stottmann, P
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eye 1,360
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Temperature measurement with thermocouples in exhaust gases
Topics: COMBUSTION PRODUCTS, EXHAUST GASES, TEMPERATURE MEASUREMENT, THERMOCOUPLES, EXHAUST GAS,...
717
717
Jun 26, 2010
06/10
by
Anglim, D. D.; Baumann, T. L.; Ebbesmeyer, L. H
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eye 717
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Space shuttle high pressure, hydrogen oxygen auxiliary propulsion subsystem requirements, tradeoffs, and concept selection
Topics: EXHAUST GASES, TEMPERATURE PROFILES, RADIOMETERS, SPECTRUM ANALYSIS, TEMPERATURE MEASUREMENT,...
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Jul 21, 2010
07/10
by
Atwell, B. H.; Mason, A. R., Jr
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eye 202
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No Abstract Available
Topics: AIR QUALITY, SPACECRAFT CABIN ATMOSPHERES, TEMPERATURE MEASUREMENT, BUILDINGS, ENERGY CONSERVATION,...
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265
May 6, 2010
05/10
by
Authier, B.; Blamont, J. E.; Carpentier, G
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eye 265
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Aluminum and sodium nitrate emitter used with monochromator-photometer for measuring ionospheric temperature
Topics: ALUMINUM, EMITTER, IONOSPHERIC TEMPERATURE, SODIUM NITRATE, TEMPERATURE MEASUREMENT, ALUMINUM...
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258
Jul 26, 2010
07/10
by
Bansal, Narottam P.; Hyatt, Mark J.; Drummond, Charles H., II
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eye 258
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Powders of roller quenched (Sr,Ba)O-Al2O3-2SiO2 glasses of various compositions were uniaxially pressed into bars and hot isostatically pressed at 1350 C for 4 hours or cold isostatically pressed and sintered at different temperatures between 800 to 1500 C for 10 or 20 hours. Densities, flexural strengths, and linear thermal expansion were measured for three compositions. The glasss transition and crystallization temperatures were determined by Differential Scanning Calorimetry (DSC). The...
Topics: DATA RECORDERS, QUALIFICATIONS, TEMPERATURE MEASUREMENT, VIBRATION METERS, ENVIRONMENTAL TESTS,...
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476
Jul 11, 2010
07/10
by
Baranov, A. V.; Liberzon, E. A.; Popova, T. I
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eye 476
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A study was made of the composition of the liquid phase formed upon absorption of nitrogen dioxide by sulfuric acid as a function of the concentration of oxides in the gas, temperature and concentration of sulfuric acid. It was found that in the process of absorption of NO2, mixtures consisting of HNO3 HNOSO4 H2SO4 H2O are formed, containing quite definite maximum concentrations of HNOSO4, dependent on temperature, NO2 concentration in the gas and concentration of absorbing sulfuric acid. This...
Topics: REMOTE SENSORS, TEMPERATURE MEASUREMENT, WIND MEASUREMENT, CRYSTAL OSCILLATORS, HEATING EQUIPMENT,...
Caption title
Topics: Thermistors, Thermocouples, Earth temperature Measurement, Electronic equipment enclosures,...
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1.6K
May 31, 2011
05/11
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Beeson, Harold D.; Davis, Dennis D.; Ross, William L., Sr.; Tapphorn, Ralph M
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This document represents efforts accomplished at the NASA Johnson Space Center White Sands Test Facility (WSTF) in support of the Enhanced Technology for Composite Overwrapped Pressure Vessels (COPV) Program, a joint research and technology effort among the U.S. Air Force, NASA, and the Aerospace Corporation. WSTF performed testing for several facets of the program. Testing that contributed to the Task 3.0 COPV database extension objective included baseline structural strength, failure mode and...
Topics: COMBUSTION PHYSICS, LIQUID FUELS, METHYL ALCOHOL, CIRCULATION, COMBUSTION PRODUCTS, LAMINAR FLOW,...
1,467
1.5K
May 28, 2011
05/11
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Beeson, Harold; Biesinger, Paul; Delgado, Rafael; Antin, Nei
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The NASA White Sands Test Facility (WSTF) in a joint program with the Naval Sea Systems Command has evaluated a number of solvents as alternatives to the use of chlorofluorocarbons currently utilized for cleaning of oxygen systems. Particular attention has been given to the cleaning of gauges and instrumentation used in oxygen service, since there have been no identified aqueous alternatives. The requirements identified as selection criteria, include toxicity, physical properties consistent...
Topics: PROPULSION, HYDROCARBONS, HIGH SPEED, FLUORESCENCE, JET FLOW, PREMIXED FLAMES, TEMPERATURE...
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180
Jun 21, 2010
06/10
by
Berg, O. E.; Richardson, F. F
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eye 180
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Cosmic dust sensor experiment on Pioneer 8 space probe
Topics: DUCTS, WALL TEMPERATURE, MERCURY (METAL), TURBULENT HEAT TRANSFER, WATER, FLOW CHARACTERISTICS,...
359
359
Jul 21, 2010
07/10
by
Biesiadny, T. J.; Klann, G. A.; Little, J. K
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eye 359
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An experimental investigation was conducted into the response of a small-turboshaft-engine compression system to steady-state and transient inlet temperature distortions. Transient temperature ramps range from less than 100 K/sec to above 610 K/sec and generated instantaneous temperatures to 420 K above ambient. Steady-state temperature distortion levels were limited by the engine hardware temperature list. Simple analysis of the steady-state distortion data indicated that a particle separator...
Topics: ANNUAL VARIATIONS, INFRARED SCANNERS, MICROWAVE RADIOMETERS, PHOTOGRAPHY, CHLOROPHYLLS, GULF OF...
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292
May 21, 2011
05/11
by
Billingham, Joh
texts
eye 292
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Various aspects of project SETI are discussed. Some of the topics discussed include spectrum analyzers, signal processing, sky surveys, radiotelescopes, high resolution microwave survey, Deep Space Network, and signal detection.
Topics: EXHAUST VELOCITY, SPACE SHUTTLE MAIN ENGINE, TEMPERATURE MEASUREMENT, VELOCITY MEASUREMENT, EXCIMER...
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Jun 27, 2010
06/10
by
Blamont, J. E., et al
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eye 210
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Oscillatory modes of antisymmetric diurnal tide calculated by Laplace equation
Topics: BOILING, CONVECTIVE HEAT TRANSFER, METALLURGY, TEMPERATURE MEASUREMENT, THERMOCOUPLES,...
251
251
May 23, 2011
05/11
by
Blanchard, Alan E.; Selby, Gregory V.; Wilkinson, Stephen P
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A flared-cone model under adiabatic and cooled-wall conditions was placed in a calibrated, low-disturbance Mach 6 flow and the stability of the boundary layer was investigated using a prototype constant-voltage anemometer. The results were compared with linear-stability theory predictions and good agreement was found in the prediction of second-mode frequencies and growth. In addition, the same 'N = 10' criterion used to predict boundary-layer transition in subsonic, transonic, and supersonic...
Topics: TEMPERATURE MEASUREMENT, INDIUM GALLIUM ARSENIDES, GALLIUM PHOSPHIDES, GALLIUM ARSENIDES, ELECTRIC...
397
397
May 31, 2011
05/11
by
Blandino, Joseph R.; Johnston, John D.; Dharamsi, Urmil K
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eye 397
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Thin-film membrane structures are under consideration for use in many future gossamer spacecraft systems. Examples include sunshields for large aperture telescopes, solar sails, and membrane optics. The development of capabilities for testing and analyzing pre-tensioned, thin film membrane structures is an important and challenging aspect of gossamer spacecraft technology development. This paper presents results from experimental and computational studies performed to characterize the wrinkling...
Topics: TEMPERATURE MEASUREMENT, LOW EARTH ORBITS, ENVIRONMENT EFFECTS, AEROSPACE ENVIRONMENTS, AUTONOMY,...
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252
May 23, 2011
05/11
by
Blewett, D. T.; Hawke, B. R.; Lucey, P. G.; Spudis, P. D
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eye 252
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The Crisium basin region harbors a number of interesting features, including geochemical and radar anomalies, light plains units and possible hidden mare deposits (cryptomaria). This report presents preliminary results of a telescopic near-infrared spectral study concerning a variety of surface units in the Crisium region. Observations were made of Mare Crisium, light plains deposits north of Taruntius crater, and the terra associated with the Crisium basin.
Topics: CLIMATE CHANGE, BOUNDARY CONDITIONS, CONFIDENCE LIMITS, DETECTION, HIGH RESOLUTION, OCEAN MODELS,...
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May 23, 2011
05/11
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Bousman, William G.; Kufield, Robert M.; Chaderjian, Neal M.; Schiff, Lewis B.; Cheung, Samson H.; Wei, J. Chyu; Bencze, Daniel P.; Duque, Earl P. N.; Gallman, John W., et al
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Selected research and technology activities at Ames Research Center are summarized. These activities exemplify the Center's varied and productive research efforts for 1994.
Topics: HYDROXYL RADICALS, LOW PRESSURE, GAS MIXTURES, METHANE, SUPERSONIC COMBUSTION RAMJET ENGINES,...
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May 31, 2011
05/11
by
Brandhorst, Henry W., Jr
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eye 330
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Electric propulsion has emerged as a cost-effective solution to a wide range of satellite applications. Deep Space 1 successfully demonstrated electric propulsion as the primary propulsion source for a satellite. The POWOW concept is a solar-electric propelled spacecraft capable of significant cargo and short trip times for traveling to Mars. There it would enter areosynchronous orbit (Mars GEO equivalent) and beam power to surface installations via lasers. The concept has been developed with...
Topics: COMBUSTION, SOOT, EMISSIVITY, TEMPERATURE MEASUREMENT, RADIOMETERS, SOLID PROPELLANTS, SURFACE...
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326
Jun 20, 2010
06/10
by
Brehm, R. L
texts
eye 326
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Temperature coefficients of reactivity due to Doppler broadening of resonances in materials for in-pile thermionic reactor materials
Topics: COEFFICIENTS, DOPPLER EFFECT, TEMPERATURE MEASUREMENT, THERMIONIC REACTOR, DOPPLER EFFECT,...
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Jun 21, 2010
06/10
by
Bretsznajder, S.; Pysiak, J
texts
eye 373
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Reaction mechanism and decomposition rate in thermal dissociation of ammonium aluminum sulfate
Topics: PHYSIOLOGICAL EFFECTS, PHYSIOLOGICAL TESTS, SKIN TEMPERATURE (BIOLOGY), SUBMERGING, TEMPERATURE...
42 leaves : 28 cm
Topics: Helium, Compressibility -- Mathematical models, Atmospheric temperature -- Measurement, Atmospheric...
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363
May 27, 2011
05/11
by
Brown, A. M
texts
eye 363
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Accounting for the statistical geometric and material variability of structures in analysis has been a topic of considerable research for the last 30 years. The determination of quantifiable measures of statistical probability of a desired response variable, such as natural frequency, maximum displacement, or stress, to replace experience-based ''safety factors'' has been a primary goal of these studies. There are, however, several problems associated with their satisfactory application to...
Topics: HEAT TRANSFER COEFFICIENTS, MACH NUMBER, REYNOLDS NUMBER, AERODYNAMIC HEATING, BOUNDARY LAYER...
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May 31, 2011
05/11
by
Brown, Michael E
texts
eye 162
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In the fall of 1999, the Galileo spacecraft made four passes into the Io plasma torus, obtaining the best in situ measurements ever of the particle and field environment in this densest region of the Jovian magnetosphere. Supporting observations from the ground are vital for understanding the global and temporal context of the in situ observations. We conducted a three-month-long Io plasma torus monitoring campaign centered on the time of the Galileo plasma torus passes to support this aspect...
Topics: FLAMES, INFRARED IMAGERY, INFRARED SPECTROSCOPY, FLAME SPECTROSCOPY, SPECTRORADIOMETERS,...
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214
Jun 12, 2011
06/11
by
Bruce, Peter J.; Gray, Judy H
texts
eye 214
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This paper examines a range of methods to collect data for the investigation of decision-making in airline Operations Control Centres (OCCs). A study was conducted of 52 controllers in five OCCs of both domestic and international airlines in the Asia-Pacific region. A range of methods was used including: surveys, interviews, observations, simulations, and think-aloud protocol. The paper compares and evaluates the suitability of these techniques for gathering data and provides recommendations on...
Topics: ICE, SIZE DISTRIBUTION, PARTICLE SIZE DISTRIBUTION, MESOSPHERE, AERONOMY, VARIABILITY, POLAR...
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199
May 6, 2010
05/10
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Buchele, D. R
texts
eye 199
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Nonlinear averaging errors in radiation pyrometry
Topics: AVERAGE, ERRORS, NONLINEARITY, RADIATION PYROMETERS, TEMPERATURE MEASUREMENT, ERROR, RADIATION...
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232
May 6, 2010
05/10
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Buchele, D. R.; Lezberg, E. A
texts
eye 232
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Optical techniques for temperature and concentration measurements of combustion in supersonic streams
Topics: COMBUSTION, TEMPERATURE MEASUREMENT, CONCENTRATION (COMPOSITION), GAS STREAMS, OPTICAL MEASUREMENT,...
233
233
May 21, 2011
05/11
by
Bucher, Allen W
texts
eye 233
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Numerous studies have been dedicated to improving the two main elements of Spacecraft Mission Operations: Command and Telemetry. As a result, not much attention has been given to other tasks that can become tedious, repetitive, and error prone. One such task is Spacecraft and Memory State Tracking, the process by which the status of critical spacecraft components, parameters, and the contents of on-board memory are managed on the ground to maintain knowledge of spacecraft and memory states for...
Topics: EMISSIVITY, TEMPORAL DISTRIBUTION, AGGREGATES, IN SITU MEASUREMENT, MINERALOGY, REMOTE SENSING,...
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176
Jun 20, 2010
06/10
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Buetefisch, K
texts
eye 176
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Electron excitation spectroscopy for measuring vibrational temperature dynamics of relaxing hypersonic gas flow
Topics: ELECTRON SCATTERING, THERMODYNAMICS, ELECTRON COLLISION, GAS SPECTROSCOPY, HYPERSONIC FLOW,...
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Jul 21, 2010
07/10
by
Buglia, J. J
texts
eye 241
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An analytical method is developed for determining the geometrical parameters which are needed to describe the viewing angles of the Sun relative to an orbiting spacecraft when the Sun rises or sets with respect to the spacecraft. These equations are rigorous and are frequently used for parametric studies relative to mission planning and for determining instrument parameters. The text is wholly self-contained in that no external reference to ephemerides or other astronomical tables is needed....
Topics: CHLOROPHYLLS, INFRARED SCANNERS, RADIOMETERS, RADIOSONDES, TABLES (DATA), GULF OF MEXICO, MAPPING,...
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May 23, 2011
05/11
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Burken, John J.; Burcham, Frank W., Jr.; Maine, Trindel A.; Feather, John; Goldthorpe, Steven; Kahler, Jeffrey A
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eye 329
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A large, civilian, multi-engine transport MD-11 airplane control system was recently modified to perform as an emergency backup controller using engine thrust only. The emergency backup system, referred to as the propulsion-controlled aircraft (PCA) system, would be used if a major primary flight control system fails. To allow for longitudinal and lateral-directional control, the PCA system requires at least two engines and is implemented through software modifications. A flight-test program...
Topics: SHEAROGRAPHY, DIGITAL ELECTRONICS, EXCITATION, TEMPERATURE EFFECTS, NONDESTRUCTIVE TESTS, RADIANT...
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166
May 22, 2011
05/11
by
Cabrera, Guillermo G
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eye 166
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It is well known that the ground state of low-dimensional antiferromagnets deviates from Neel states due to strong quantum fluctuations. Even in the presence of long-range order, those fluctuations produce a substantial reduction of the magnetic moment from its saturation value. Numerical simulations in anisotropic antiferromagnetic chains suggest that quantum fluctuations over Neel order appear in the form of localized reversal of pairs of neighboring spins. In this paper, we propose a...
Topics: AURORAL IONIZATION, DMSP SATELLITES, F REGION, PLASMA DENSITY, RADAR DATA, TEMPERATURE...
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May 31, 2011
05/11
by
Calvet, Nuri
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During the Winter and Fall 2001 observing campaigns, we obtained multifilter photometry using the Quest camera on the 1mt Schmidt of the Venezuelan National Observatory, to continue the survey of the Orion clouds. In the Winter 2001 season, we obtained photometry for 9 scans at DEC=5, 3 scans at DEC=-5, and 2 scans at DEC=-3, while 2 additional scans at DEC=-3 were obtained during the Fall 2001 observing campaign (the width of each scan is 2.3 arc minutes). The photometric survey has not been...
Topics: THERMODYNAMICS, VAPOR PRESSURE, KNUDSEN GAGES, KNUDSEN FLOW, MASS SPECTROSCOPY, CONDENSING, VAPOR...
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Jul 21, 2010
07/10
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Carlson, H. W.; Walkley, K. B
texts
eye 263
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This paper describes methodology and an associated computer program for the design of wing lifting surfaces with attainable thrust taken into consideration. The approach is based on the determination of an optimum combination of a series of candidate surfaces rather than the more commonly used candidate loadings. Special leading-edge surfaces are selected to provide distributed leading-edge thrust forces which compensate for any failure to achieve the full theoretical leading-edge thrust, and a...
Topics: BAYS (TOPOGRAPHIC FEATURES), INFRARED IMAGERY, INFRARED SCANNERS, TEMPERATURE MEASUREMENT, DATA...
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Mar 28, 2013
03/13
by
Cataland, George; Plumb, Harmon H.
texts
eye 160
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Topics: Temperature measurements., Atmospheric temperature--Measurement.
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190
Jul 12, 2010
07/10
by
Chan, K. L.; Sofia, S
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eye 190
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A simple matching technique is explained which allows the computation of the response of the solar surface to perturbations which occur at any depth within the convective envelope of the Sun. This technique was applied to a perturbation of the convective efficiency (alpha-mechanism), and of the non-gas component of the pressure (beta-mechanism) in different regions of the convection zone. The results indicate that either perturbation affects the solar luminosity. However, the alpha-mechanism...
Topics: CONFERENCES, SOLAR LIMB, SOLAR MAXIMUM MISSION, SOLAR NEUTRINOS, STELLAR EVOLUTION, SUN,...
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May 23, 2011
05/11
by
Chang, Sin-Chun
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A new numerical framework for solving conservation laws is being developed. This new framework differs substantially in both concept and methodology from the well-established methods, i.e., finite difference, finite volume, finite element, and spectral methods. It is conceptually simple and designed to overcome several key limitations of the above traditional methods. A two-level scheme for solving the convection-diffusion equation is constructed and used to illuminate the major differences...
Topics: CALIBRATING, CORRECTION, HEAT TRANSFER, METAL SURFACES, QUARTZ LAMPS, RATIOS, TEMPERATURE...
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971
May 23, 2011
05/11
by
Cheng, Doreen Y
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Abstract This survey examines thirty-five parallel programming languages and fifty-nine parallel programming tools. Focus is placed on those tool capabilities needed for parallel scientific programming rather than for general computer science. The tools are classified based on their functions and ranked with current and future needs of NAS in mind. In particular, existing and anticipated NAS supercomputers and workstations, operating systems, programming languages and applications. Tables are...
Topics: ELECTRIC PROPULSION, ION ENGINES, CHARGE TRANSFER, PLASMA ENGINES, PROPELLANTS, TEMPERATURE...
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411
May 23, 2011
05/11
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Chiaverini, Martin J.; Harting, George C.; Lu, Yeu-Cherng; Kuo, Kenneth K.; Serin, Nadir; Johnson, David K
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eye 411
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Using a high-pressure, two-dimensional hybrid motor, an experimental investigation was conducted on fundamental processes involved in hybrid rocket combustion. HTPB (Hydroxyl-terminated Polybutadiene) fuel cross-linked with diisocyanate was burned with GOX under various operating conditions. Large-amplitude pressure oscillations were encountered in earlier test runs. After identifying the source of instability and decoupling the GOX feed-line system and combustion chamber, the pressure...
Topics: HEAT RESISTANT ALLOYS, MATHEMATICAL MODELS, TEMPERATURE MEASUREMENT, GENETIC ALGORITHMS, COMPUTER...
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Jun 20, 2010
06/10
by
Clark, S. P., Jr
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eye 177
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Theory and model calculations for heat flow measurements at lunar site using cylindrical ring source
Topics: CYLINDRICAL BODIES, FLOW MEASUREMENT, HEAT TRANSMISSION, LUNAR PROBES, TEMPERATURE MEASUREMENT,...
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Jul 26, 2010
07/10
by
Cline, Alan K
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eye 171
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No Abstract Available
Topics: AERODYNAMIC HEATING, HEMISPHERE CYLINDER BODIES, SUPERSONIC FLOW, TEMPERATURE MEASUREMENT,...
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461
Jun 9, 2011
06/11
by
Cockrell, Charles E., Jr
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eye 461
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A computational study was conducted to better understand experimental results obtained from wind tunnel tests of a Mach 4 waverider model and a comparative reference configuration. The experimental results showed that the performance of the reference configuration was slightly better than that of the waverider model. These results contradict waverider design theory, which suggests that a waverider optimized for maximum lift-to-drag should provide better performance than any other non-waverider...
Topics: COMBUSTION CHAMBERS, STATIC PRESSURE, SUPERSONIC FLOW, SUPERSONIC SPEED, GAS STREAMS, SUPERSONIC...
Journal of Research of the National Bureau of Standards
Topics: Cryogenic, electrical resistivity, low temperature, platinum, resistance thermometry, temperature...
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259
Sep 20, 2010
09/10
by
Cruse, Thomas A
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The thermal protection system installed on the SRB frustrums incurs the formation of debonds between the MSA-2 TPS material and the substrate. The debonds can lead to surface penetrating cracks, called 'smileys' near sealed fasteners and other surface discontinuities. The study concluded that the 'smileys' were caused as the result of stress risers caused by excess fastener sealant (PR-1422) and weakly bonded surfaces. Once the debond occurs, 'smileys' form when the debond area is sufficiently...
Topics: GAS FLOW, LIGHT (VISIBLE RADIATION), SPECTRUM ANALYSIS, GAS TEMPERATURE, IMAGING TECHNIQUES,...
