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  • Other Sources  (6)
  • 1990-1994  (3)
  • 1985-1989  (3)
  • 1
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    The Galileo Attitude and Articulation Control System - A radiation-hard, high precision, state-of-the-art control system (1986)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: The Galileo Mission and Spacecraft design impose tight requirements on the Attitude and Articulation Control System (AACS). These requirements, coupled with the flexible spacecraft, the need for autonomy, and a severe radiation environment, pose a great challenge for the AACS designer. The resulting design and implementation are described, along with the discovery and solution of the Single-Event Upset problem. The status of the testing of the AACS in the Integration and Test Laboratory as well as at the spacecraft level is summarized.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
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    NASA TECHNICAL REPORTS
  • 2
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    The Galileo attitude and articulation control system - A radiation-hard, high precision, state-of-the-art control system (1985)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: The Galileo mission and spacecraft, consisting of a Jupiter-orbiter and an atmospheric entry probe, are discussed. Components will include: magnetometers and plasma-wave antennas on a boom, high-gain antenna, probe vehicle, two different bus electronics packages, and a radioisotope thermoelectric generator. Instruments, investigators and objectives are tabulated for both probe science and orbiter science investigations. Requirements in the design of the attitude and articulation control system are very stringent because of the complex dynamics, flexible body effects, the need for autonomy, and the severe radiation environment in the Jupiter nighborhood. Galileo was intended to be ready for launch via Space Shuttle in May of 1986.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
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    NASA TECHNICAL REPORTS
  • 3
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    The NASA space power technology program (1992)
    In:  Other Sources
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    Publication Date: 2019-01-25
    Description: NASA has a broad technology program in the field of space power. This paper describes that program, including the roles and responsibilities of the various NASA field centers and major contractors. In the power source area, the paper discusses the SP-100 Space Nuclear Power Project, which has been under way for about seven years and is making substantial progress toward development of components for a 100-kilowatt power system that can be scaled to other sizes. This system is a candidate power source for nuclear electric propulsion, as well as for a power plant for a lunar base. In the energy storage area, the paper describes NASA's battery- and fuel-cell development programs. NASA is actively working on NiCd, NiH2, and lithium batteries. A status update is also given on a U.S. Air Force-sponsored program to develop a large (150 ampere-hour) lithium-thionyl chloride battery for the Centaur upper-stage launch vehicle. Finally, the area of power management and distribution (PMAD) is addressed, including power system components such as solid-state switches and power integrated circuits. Automated load management and other computer-controlled functions offer considerable payoffs. The state of the art in space power is described, along with NASA's medium- and long-term goals in the area.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: ; : Spaceflight mechan
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    NASA TECHNICAL REPORTS
  • 4
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    JPL Mars Observer In-Flight Anomaly Investigation (1994)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Description: None given. Paper gives background of Mars Observer mission, its failure upon Mars orbit insertion, and covers the most credible causes for its demise.
    Keywords: Lunar and Planetary Science and Exploration
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    NASA TECHNICAL REPORTS
  • 5
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    The NASA Telerobotics Research Program (1990)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: An account is given to NASA efforts in the development of space telerobotics, which encompass mission analyses, core technology research, systems-integration testbed evaluations, ground-based demonstrations, and flight experiments. Space telerobotics applications encompass (1) The Space Shuttle Satellite Servicing System, (2) the Space Shuttle Orbiter's Remote Manipulator System, (3) the Space Station Freedom's Flight Telerobotics Servicer, Mobile Servicing Center, and Japanese Experiment Module, and (4) planetary rovers. A fundamental role is being played by NASA-Marshall, which possesses a Teleoperator and Robotics Evaluation Facility.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: IFAC Symposium; Jul 17, 1989 - Jul 21, 1989; Tsukuba; Japan
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Advanced flight computers for planetary exploration (1988)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Research concerning flight computers for use on interplanetary probes is reviewed. The history of these computers from the Viking mission to the present is outlined. The differences between ground commercial computers and computers for planetary exploration are listed. The development of a computer for the Mariner Mark II comet rendezvous asteroid flyby mission is described. Various aspects of recently developed computer systems are examined, including the Max real time, embedded computer, a hypercube distributed supercomputer, a SAR data processor, a processor for the High Resolution IR Imaging Spectrometer, and a robotic vision multiresolution pyramid machine for processsing images obtained by a Mars Rover.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: International Symposium on Space Technology and Science; May 22, 1988 - May 27, 1988; Sapporo; Japan
    Format: text
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    NASA TECHNICAL REPORTS
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