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  • 1
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    Hypersonic Inflatable Aerodynamic Decelerator (HIAD) Technology Development Overview (2013)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The successful flight of the Inflatable Reentry Vehicle Experiment (IRVE)-3 has further demonstrated the potential value of Hypersonic Inflatable Aerodynamic Decelerator (HIAD) technology. This technology development effort is funded by NASA's Space Technology Mission Directorate (STMD) Game Changing Development Program (GCDP). This paper provides an overview of a multi-year HIAD technology development effort, detailing the projects completed to date and the additional testing planned for the future.
    Keywords: Spacecraft Design, Testing and Performance
    Type: NF1676L-16795 , International Planetary Probe Workshop (IPPW-10); Jun 17, 2013 - Jun 21, 2013; San Jose, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    A confirmed earthquake in continental Antarctica (1985)
    In:  Geophys. J. R. astr. Soc., Dordrecht, D. Reidel, vol. 81, no. 6, pp. 489-492
    Details
    Publication Date: 1985
    Keywords: Earthquake ; Seismicity ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    The liquid rocket booster and its potential for the STS (1989)
    In:  CASI
    Details
    Publication Date: 2006-06-11
    Description: Results of the liquid rocket booster study initiated by NASA to define an alternative to solid rocket boosters, are presented. The prime study contractors, Martin Marietta Corporation and General Dynamics, have identified liquid rocket booster configurations that can increase shuttle performance to 70 klb. These boosters will provide improved reliability, hold down, verification prior to vehicle release, engine-out and abort capabilities. Phasing of these boosters into Space Transportation System (STS) operations without adversely affecting flight rate is described.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: ESA, Progress in Space Transportation; p 405-41
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Enhancements of energetic ions associated with travelling compression regions in the deep geomagnetic tail (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: This paper presents a representative example of an enhancement in energetic ion flux associated with the International Sun-Earth Explorer 3 (ISEE 3) spacecraft's encounter with a traveling compression region (TCR). Data from the energetic particle anisotropy spectrometer (EPAS) instrument on ISEE 3 are studied, along with magnetic field data from the vector helium magnetometer. It is concluded that the ion enhancements seen are spatial in nature, thus supporting the idea that TCRs are the lobe signatures of plasmoids moving along the magnetotail, away from earth.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 92; 64-70
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Dust density and mass distribution near comet Halley from Giotto observations (1986)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The density and the mass spectrum of the dust near comet Halley have been measured by the Giotto space probe's dust impact detection system. The dust spectrum obtained at 291,000 km from the comet nucleus show depletion in small and intermediate masses; at about 600 km from the nucleus, however, the dust activity rises and the spectrum is dominated by larger masses. Most of the mass striking Giotto is noted to reside in the few large particles penetrating the dust shield. Momentum balances and energy considerations applied to an observed deceleration suggest that a large mass of the spacecraft was detached by an impact.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Nature (ISSN 0028-0836); 321; 338-341
    Format: text
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  • 6
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    The project EGRET (Energetic Gamma-Ray Experiment Telescope) on NASA's Gamma-Ray Observatory (GRO) (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The design, predicted performance, and scientific objectives of the 20-30,000-MeV gamma-ray telescope EGRET for the NASA GRO spacecraft (scheduled for Space Shuttle launch to a 450-km 28.5-deg orbit in 1990) are reviewed. The other GRO instruments are briefly characterized, including the burst and transient-source experiment, the oriented scintillation spectrometer, and the imaging Compton telescope. EGRET comprises an anticoincidence system, a spark chamber, a triggering telescope, an NaI total-absorption spectrometer, a gas supply capable of refilling the chamber four times, and support electronics. EGRET will operate with energy resolution about 15 percent, effective area about 2000 sq cm, sensitivity about 5 x 10 to the -8th/sq cm sec, angular resolution 0.1-0.4 deg, and FOV about 40 deg FWHM. Observations of Galactic point sources, Galactic and extragalactic diffuse emission, gamma-ray bursts, and solar flares are planned.
    Keywords: ASTRONOMY
    Type: Space Science Reviews (ISSN 0038-6308); 49; 1-2,
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  • 7
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    A second supernova inside Puppis A? (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Narrow-band images of an unusual swirl structure located near the center of the Puppis A supernova remnant are presented which reveal three overlapping filamentary systems of highly diverse composition. One is dominated by emission lines of nitrogen, one by oxygen, and one by sulfur. Spectra indicate that these small rings have high velocities and a corresponding kinematic age of less than 800 yr. Heavy-element abundances are extremely high and different in each system, some reminiscent of knots in Cas A, and others of circumstellar matter observed surrounding supernova 1987A. The youth and unusual chemistry lead to the suggestion that a second supernova has exploded within the shell of Puppis A, giving rise to the swirl structure.
    Keywords: ASTROPHYSICS
    Type: Nature (ISSN 0028-0836); 337; 48-50
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Thin film bioreactors in space (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Studies from the Skylab, SL-3 and D-1 missions have demonstrated that biological organisms grown in microgravity have changes in basic cellular functions such as DNA, mRNA and protein synthesis, cytoskeleton synthesis, glucose utilization, and cellular differentiation. Since microgravity could affect prokaryotic and eukaryotic cells at a subcellular and molecular level, space offers an opportunity to learn more about basic biological systems with one inmportant variable removed. The thin film bioreactor will facilitate the handling of fluids in microgravity, under constant temperature and will allow multiple samples of cells to be grown with variable conditions. Studies on cell cultures grown in microgravity would make it possible to identify and quantify changes in basic biological function in microgravity which are needed to develop new applications of orbital research and future biotechnology.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: - Gravitational Biology, Espoo, Finland, July 18-29, 1988) Advances in Space Research (ISSN 0273-1177); 111-117
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    CLEAR: Communications Link Expert Assistance Resource (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Communications Link Expert Assistance Resource (CLEAR) is a real time, fault diagnosis expert system for the Cosmic Background Explorer (COBE) Mission Operations Room (MOR). The CLEAR expert system is an operational prototype which assists the MOR operator/analyst by isolating and diagnosing faults in the spacecraft communication link with the Tracking and Data Relay Satellite (TDRS) during periods of realtime data acquisition. The mission domain, user requirements, hardware configuration, expert system concept, tool selection, development approach, and system design were discussed. Development approach and system implementation are emphasized. Also discussed are system architecture, tool selection, operation, and future plans.
    Keywords: ADMINISTRATION AND MANAGEMENT
    Type: Proceedings of 1987 Goddard Conference on Space Applications of Artificial Intelligence (AI) and Robotics; 12 p
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    The inverse-square law and quantum gravity (1989)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A program is described which measures the gravitational acceleration of antiprotons. This idea was approached from a particle physics point of view. That point of view is examined starting with some history of physics over the last 200 years.
    Keywords: ASTROPHYSICS
    Type: NASA, Relativistic Gravitational Experiments in Space; p 55-58
    Format: application/pdf
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