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There are a total of 1509 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Algorithm For Control Of Underactuated Manipulators
Author(s): Jain, Abhinandan; Rodriguez, Guillermo
Abstract: Algorithm for improved control of underactuated multiple-link robotic manipulators developed via spatial-algebra-operator approach. Aspects of this approach described in several previous articles in NASA Tech Briefs-most ...
NASA Center: Jet Propulsion Laboratory
Publication Year: 1994
Added to NTRS: 2005-09-30
Accession Number: 94B10463; Document ID: 19940000463; Report Number: NPO-18498
Heated tool for autoclaves
Author(s): Serafini, T. T.; Vanucci, R. D.; Cavano, P. J.; Winters, W. E.
Abstract: Components made of composite materials are heated in autoclaves by employing electrical resistance heating blankets, thus avoiding need to heat entire autoclave volume. Method provides not only significant energy savings ...
NASA Center: Glenn Research Center
Publication Year: 1980
Added to NTRS: 2005-09-30
Accession Number: 79B10411; Document ID: 19790000411; Report Number: LEW-12987
Multipurpose seals for pressure vessels
Author(s): Buggele, A. E.
Abstract: Cryogenic or multipurpose seals made by using new materials. Seal possesses sufficient flexibility to contain high-pressure fluids regardless of dimensional changes from eigher pressure and/or temperature effects. Seal ...
NASA Center: Glenn Research Center
Publication Year: 1979
Added to NTRS: 2005-09-30
Accession Number: 79B10263; Document ID: 19790000263; Report Number: LEW-12944
Robotic Gripper With Force Control And Optical Sensors
Author(s): Montgomery, James L.
Abstract: Robotic gripper locates, measures, recognizes and manipulates objects in assembly-line setting. Fiber-optic sensors in fingertips help locate and identify object. Gripper grasps object and determines size from ...
NASA Center: Marshall Space Flight Center
Publication Year: 1992
Added to NTRS: 2005-09-30
Accession Number: 92B10376; Document ID: 19920000376; Report Number: MFS-28537
Aerobrakes For A Manned Mars Mission
Author(s): Menees, G. P.
Abstract: Paper presents results of study of aerobraking in manned mission to Mars. Describes geometry and aerodynamic characteristics of aerobraked vehicle. Discusses computer program, WTRAJ, used to simulate trajectories near ...
NASA Center: Ames Research Center
Publication Year: 1990
Added to NTRS: 2005-09-30
Accession Number: 90B10365; Document ID: 19900000365; Report Number: ARC-12117
"Blind" position indicator
Author(s): Cruzan, R. C.
Abstract: Position-indicating instrument helps operator align parts without seeing them. Device is useful in industrial operations where parts must be blind-positioned accurately.
NASA Center: Johnson Space Center
Publication Year: 1979
Added to NTRS: 2005-09-30
Accession Number: 78B10570; Document ID: 19780000570; Report Number: MSC-16972
Heavy-duty mechanical sequencer
Author(s): Appleberry, W. T.
Abstract: Modular sequential mechanism allows output stroke angle and location of start/stop points to be pre-programmed. Output torques are higher than typical Geneva mechanisms, are constant throughout cycle, and have a moment equal ...
NASA Center: Johnson Space Center
Publication Year: 1977
Added to NTRS: 2005-09-30
Accession Number: 76B10418; Document ID: 19760000418; Report Number: MSC-19536
Robot Control Based On Spatial-Operator Algebra
Author(s): Rodriguez, Guillermo; Kreutz, Kenneth K.; Jain, Abhinandan
Abstract: Method for mathematical modeling and control of robotic manipulators based on spatial-operator algebra providing concise representation and simple, high-level theoretical frame-work for solution of kinematical and dynamical ...
NASA Center: Jet Propulsion Laboratory
Publication Year: 1992
Added to NTRS: 2005-09-30
Accession Number: 92B10550; Document ID: 19920000550; Report Number: NPO-17918
Thermal Elastohydrodynamic Lubrication of Spur Gears
Author(s): Wang, K. L.; Cheng, H.
Abstract: Analysis and computer program (TELSGE) predict variations of dynamic load and surface temperature and lubricant film thickness along contacting path of pair of involute spur gears. Analysis of dynamic load includes effect of ...
NASA Center: Glenn Research Center
Publication Year: 1983
Added to NTRS: 2005-09-30
Accession Number: 83B10213; Document ID: 19830000213; Report Number: LEW-13528
Long-wearing TFE/metal bearings
Author(s): Brass, R. A.; Gillon, W. A., Jr.
Abstract: Method for making metal/polytetrafluoroethylene (TFE) bearing surfaces embeds long-wearing layer of TFE in microscopic pits in metal. Technique has potential applications in automotive gears, ball joints, and roller chain ...
NASA Center: Johnson Space Center
Publication Year: 1980
Added to NTRS: 2005-09-30
Accession Number: 79B10409; Document ID: 19790000409; Report Number: MSC-15994
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