Static, Dynamic, and High Cycle Fatigue Analysis of Crossed Spherical Gearing for Robotic Arm Ball Joint: A Finite Element Analysis Approach [PDF]
Crossed spherical gearing is used in the joints of robotic arm prostheses and allows mobility in 3 degrees of freedom. This paper aims to evaluate the design of a cross-spherical gear with three different materials, PEEK, AISI 304L, and Ti-6Al-4V, for a ...
Algoner, William C. +6 more
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Thermal behavior spiral bevel gears [PDF]
An experimental and analytical study of the thermal behavior of spiral bevel gears is presented. Experimental data were taken using thermocoupled test hardware and an infrared microscope.
Handschuh, Robert F.
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Rotating and positive-displacement pumps for low-thrust rocket engines. Volume 1: Pump Evaluation and design [PDF]
Rotating and positive displacement pumps of various types were studied for pumping liquid fluorine for low-thrust, high-performance rocket engines. Included in the analysis were: centrifugal, pitot, Barske, Tesla, drag, gear, vane, axial piston, radial ...
Csomor, A., Macgregor, C.
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Nonlinear dynamic characteristics of modified variable hyperbolic circular arc tooth trace cylindrical gears. [PDF]
Sci RepMa D, Ye Z.
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Aeronautical Engineering: A special bibliography with indexes, supplement 54 [PDF]
This bibliography lists 316 reports, articles, and other documents introduced into the NASA scientific and technical information system in January ...
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A Multi-Band Far-Infrared Survey with a Balloon-Borne Telescope [PDF]
Nine additional radiation sources, above a 3-sigma confidence level of 1300 Jy, were identified at 100 microns by far infrared photometry of the galactic plane using a 0.4 meter aperture, liquid helium cooled, multichannel far infrared balloon-borne ...
Frederick, C. +5 more
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NASA patent abstracts bibliography: A continuing bibliography. Section 1: Abstracts (supplement 11) [PDF]
This continuing bibliography lists index for 3256 patents and patent applications introduced into the NASA scientific and technical informations system from January 1977 through June 1977.
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NASA Tech Briefs, December 1989 [PDF]
Topics include: Electronic Components and Circuits. Electronic Systems, Physical Sciences, Materials, Computer Programs, Mechanics, Machinery, Fabrication Technology, Mathematics and Information Sciences, and Life ...
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An extension of the Dewey decimal system of classification applied to the engineering industries [PDF]
, 1912 Breckenridge, Lester Paige +1 more
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