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  • 1
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    Embedded expert system for space shuttle main engine maintenance (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The SPARTA Embedded Expert System (SEES) is an intelligent health monitoring system that directs analysis by placing confidence factors on possible engine status and then recommends a course of action to an engineer or engine controller. The technique can prevent catastropic failures or costly rocket engine down time because of false alarms. Further, the SEES has potential as an on-board flight monitor for reusable rocket engine systems. The SEES methodology synergistically integrates vibration analysis, pattern recognition and communications theory techniques with an artificial intelligence technique - the Embedded Expert System (EES).
    Keywords: CYBERNETICS
    Type: Third Conference on Artificial Intelligence for Space Applications, Part 1; p 115-119
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Using automatic robot programming for space telerobotics (1987)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The interpreter of a task level robot programming system called Handey is described. Handey is a system that can recognize, manipulate and assemble polyhedral parts when given only a specification of the goal. To perform an assembly, Handey makes use of a recognition module, a gross motion planner, a grasp planner, a local approach planner and is capable of planning part re-orientation. The possibility of including these modules in a telerobotics work-station is discussed.
    Keywords: CYBERNETICS
    Type: Jet Propulsion Lab., California Inst. of Tech., Proceedings of the Workshop on Space Telerobotics, Volume 3; p 139-150
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Hydrogen Refrigerator Would Cool Below 10 K (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Closed-cycle hydrogen refrigerator uses low-level heat energy to cool objects to temperature of 10 K. Refrigerator needs only fraction of energy of previous equipment with similar low-temperature capability. Unit compact and light in weight. With valves as only moving parts, reliable for many years. Refrigeration concept adapted to cooling superconducting magnets on magnetically levitated railcars, nuclear-particle accelerators, and variety of other cryogenic equipment.
    Keywords: MACHINERY
    Type: NPO-16393 , NASA Tech Briefs (ISSN 0145-319X); 9; 4; P. 153
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    LaNi5 Hydrogen-Absorption Cryogenic System (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Hydrogen-absorption refrigerating system provides about 650 mW of cooling at 20 to 29 K in continuous, closed-cycle operation. Three thermally cycled absorbers/desorbers act as compressors. System successfully tested below 29 K for over 1,000 h, while separate room-temperature hydride compressor operated continuously for 6,000 h. Due to lack of moving parts, lifetimes of 10 years or more eventually expected.
    Keywords: MACHINERY
    Type: NPO-16314 , NASA Tech Briefs (ISSN 0145-319X); 9; 3; P. 144
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Dolly Swivel for Forklift (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Adapter enables large dolly towed or pushed by forklift truck and swivel on forklift on turns. Adapter prevents dolly from slipping off forks and damaging loads. Swivel adapter rests on forklift and provides pivot for towing dolly.
    Keywords: MACHINERY
    Type: MFS-19866 , NASA Tech Briefs (ISSN 0145-319X); 9; 3; P. 148
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Improved Seal for NTF Fan Shaft (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: New seal more effective and lasts longer. Seal consists of five felt rings interspersed with four polytetrafluoroethylene rings having inner diameter slightly larger than shaft. Spaces between polytetrafluoroethylene rings and shaft produce labyrinth effect, which increases degree of sealing.
    Keywords: MACHINERY
    Type: LAR-13218 , NASA Tech Briefs (ISSN 0145-319X); 10; 2; P. 127
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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