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  • 1
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    The interplanetary and near-Jupiter meteoroid environments (1974)
    American Geophysical Union
    Details
    Publication Date: 1974-09-01
    Print ISSN: 0148-0227
    Electronic ISSN: 2156-2202
    Topics: Geosciences
    Published by American Geophysical Union
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    PAPER CURRENT
  • 2
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    Recent NASA meteoroid penetration results from satellites (1967)
    In:  CASI
    Details
    Publication Date: 2006-10-26
    Description: Meteoroid penetration measurements by Explorer XVI and XXIII satellites and Pegasus satellites for application to spacecraft design
    Keywords: SPACE SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Introduction to Long-Duration Exposure Facility (1984)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: A description of the structure and uses of the Long Duration Exposure Facility (LDEF) is given. The LDEF was designed to provide a large number of economical opportunities for science and technology experiments that require modest electrical power and data processing while in space and which benefit from postflight laboratory investigations with the retrieved experiment hardware. Like the Shuttle, the LDEF is reusable, and repeat missions are planned, each with a new complement of experiments. The LDEF is essentially a free-flying cylindrical structure. The experiments on LDEF are totally self-contained in trays mounted on the exterior of the structure. LDEF can accommodate 86 experiment trays, 72 around the circumference and 14 on the two ends. The LDEF is delivered to Earth orbit by the Shuttle. In orbit, the Shuttle remote manipulator system removes the LDEF from the Shuttle payload bay and places it in a gravity-gradient-stabilized attitude. After an extended period in orbit, which is set by experiment requirements, the LDEF is retrieved on a subsequent Shuttle flight.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA. Langley Research Center Long Duration Exposure Facility (LDEF); p 1-5
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    NASA TECHNICAL REPORTS
  • 4
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    The interplanetary and near-Jupiter meteoroid environments (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The meteoroid penetration detectors on the Pioneer 10 spacecraft recorded 67 meteoroid penetrations through the 25-micron stainless steel test material while the spacecraft was between 1.0 and 5.1 AU. Ten of these penetrations occurred during the encounter with Jupiter. The cumulative spatial density of meteoroids with masses greater than 2 nanograms has been calculated from these data for interplanetary space and for the near-Jupiter space. The spatial density is found to be essentially constant in interplanetary space between 1 and 5 AU, approximately 1 meteoroid per cubic km, and 1-2 orders of magnitude greater near Jupiter. There was no increase in the spatial density of meteoroids in the asteroid belt and hence no evidence that there is a significant asteroidal component of 2-nanogram meteoroids. It is uncertain whether the meteoroids detected near Jupiter were in orbit about Jupiter or were gravitationally focused toward the planet from solar orbits.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 79; Sept. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Interplanetary and near-Jupiter meteoroid environments - Preliminary results from the meteoroid detection experiment (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Data on interplanetary and near-Jupiter micrometer-sized particle encounters from the meteoroid-detection experiment on Pioneer 10 indicate that Jupiter is much 'dustier' than interplanetary space. Whereas the near-earth particulate flux showed very little increase over the interplanetary flux, the near-Jupiter penetration flux was over two orders of magnitude higher than the interplanetary flux.
    Keywords: SPACE SCIENCES
    Type: Science; 183; Jan. 25
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Long duration exposure facility - A multipurpose free-flying experiment carrier (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The Long Duration Exposure Facility (LDEF) is being developed to accommodate, using the Shuttle, a class of technology, science, and applications experiments which do not require a sophisticated or dedicated satellite. The LDEF is a simple reusable structure approximately 4.3 m in diameter and 9 m in length. The basic LDEF consists of a structural framework whose cross section is a 12-sided regular polygon. A facility description is provided, taking into account the structure, aspects of attitude stabilization, the experiment trays, the experiment exposure control canister, the environment monitoring system, and Shuttle bay environment measurements. Missions and questions of experiment selection are discussed, giving attention to orbits, dynamic motions, a space debris damage experiment, thermal coating experiments, the solar cells and arrays experiment, and the active optical components experiment.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: Raumfahrtforschung; 20; Sept
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Pioneer 11 meteoroid detection experiment - Preliminary results (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The concentration of meteoroids of mass about 0.01 microgram in interplanetary space, in the asteroid belt, and near Jupiter has been measured. The data confirm the Pioneer 10 observation that the asteroid belt is not highly populated with small meteoroids, suggest that the high concentration of small particles around Jupiter is the result of gravitational focusing, and provide an indication of the mass distribution of meteoroids in interplanetary space.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Science; 188; May 2
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    AN EXPERIMENTAL INVESTIGATION OF SINGLE ALUMINUM ''METEOR BUMPERS.'' (1961)
    In:  Other Sources
    Details
    Publication Date: 2011-08-10
    Description: Single aluminum meteoroid shields for space vehicles
    Keywords: STRUCTURAL MECHANICS
    Type: Proceedings of the Fifth Symposium on Hypervelocity Impact. Part II Vol. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Long Duration Exposure Facility - A unique mode of Shuttle utilization (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The Long Duration Exposure Facility (LDEF) is a Shuttle-transported, reusable, essentially passive facility with accommodations for a wide variety of experiments which require a free-flying carrier for exposure in space. Specifically, the LDEF is tailored to provide low-cost accommodations for experiments which have modest requirements for electrical power and data systems, and for experiments which benefit from postflight laboratory investigations with the retrieved experiment hardware. Each experiment for LDEF will be totally self-contained in a tray. As the interface with the facility has been minimized, the LDEF experimenters will be freed from many of the requirements which have complicated development of space experiments in the past.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Impact of Saturn ring particles on Pioneer 11 (1980)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The detection of particles near the rings of Saturn by the meteoroid detection instrument on board Pioneer 11 is discussed. The instrument consists of 234 penetration detectors, distributed between two independent data channels each of which is designed to become inhibited for a period of 77 min after the registration of a penetration event in that channel. At least four particles penetrated the detectors in the 4.5 h period around Saturn periapsis at radial distances between 1.36 and 3.1 Saturn radii, a radial distribution inconsistent with the gravitational focusing of meteoroids. The detection of particles which may have been part of the E ring before the crossing of the ring plane suggests that this ring may be 1800 km thick, with an optical thickness greater than 10 to the -8th.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Science; 207; Jan. 25
    Format: text
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    NASA TECHNICAL REPORTS
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