Space Systems Lab
University of Maryland
Articles, Publications, and Presentations
3-D Sprags and Rollers
- NASA/Goddard Space Flight Center's Technology CommercializationOffice Three-Dimensional Roller Locking SpragTechnology Opportunity
- "Clutch Combined With Screw-Released Roller Brake," NASA Tech Briefs, December 1996.
- "Roller Unlocking Sprags," NASA Tech Briefs, December 1996.
- "Three-Dimensional Roller Locking Sprags," NASA Tech Briefs, February 1997.
- "Sprag DesignAdds New Dimension," Design News, 3 March 1997.
- Poland, J. and B. Roberts, "Development and Analysis of Three-Dimensional Roller LockingSprags," In NASA/Goddard Space Flight Center's Director's Discretionary Funding AnnualReport, January 1998.
- Vranish, J. M., "Three-Dimensional Roller Locking Sprags," Date filed: 27 July 1994, Date ofPatent: 9 January 1996, Patent Number:5,482,144 or 5,482,144
, Case Number:GSC-13617
- Vranish, J. M., "Spin Bearings/Sprag Bearings, " Invention Disclosure Submitted: 25 August 1994,Case Number: GSC 13,679.
- Vranish, J. M., "Roll-Unlocking Sprags," Invention Disclosure Submitted: 25 November 1994, CaseNumber: GSC 13,692.
- Vranish, J. M., "Clutch Combined With Screw-Released Roller Brake," Case Number:GSC-13674.
- Vranish, J. M., Wade, M. O., Poland, Jr., J. W., "Linear 3-D Roller Locking Sprags," InventionDisclosure Submitted: 9 September 1996, Case Number: GSC 13,885.
- Vranish, J. M., "2-Way 3-D Roller Locking Sprags," Invention Disclosure Submitted: 5 December1996, Case Number: GSC 13,910.
- Vranish, J. M., "1-Way Bearing," Invention Disclosure Submitted: 5 March 1997, Case Number:13,905.
Extravehicular Activity 3-D Roller Wrench
- Roberts, B., "Development of a 'Ratchetless' Wrench forExtravehicular Activity," 1999 AIAA Region I Mid-Atlantic Student Conference, 16-17 April1999 (also published as SSL Document Number 99-005).
- Roberts, B. J. and D. L. Akin, "Weightless Testing of a'Ratchetless' Extravehicular ActivityWrench," SAE 1999-01-2036, 29th International Conference on Environmental Systems,12-15 July 1999 (also published as SSL Document Number 99-007).
- Roberts, B., "Evaluation of a Three-Dimensonal Roller Clutch Reversible Hand Socket Wrenchfor Extravehicular Activity," Master of Science Thesis, Department of Aerospace Engineering,University of Maryland, 9 August 1999 (also published as SSL Document Number 99-012).
KC-135A Reduced-Gravity Flying Laboratory Tests
- Probst, J., Molina, P., Lieb, E., and B. Roberts, "Performance Testing of Ratchetless EVA HandTools," Poster Number AAS 98-496,American Astronomical SocietyNational Conference and 45th Annual Meeting: Space Station and the International Human Explorationand Development of Space, Houston, TX, 17-19 November 1999.
- Molina, P, and J. Probst, "Performance Testing of a RatchetlessExtravehicular Activity Hand Tool on the Reduced-Gravity Flying Laboratory," 1999 AIAA RegionV Mid-Atlantic Student Conference, 15-18 April 1999.
Neutral Buoyancy Laboratory Evaluations
- Roberts, B., "Three-Dimensional Roller Wrench and Human Performance Neutral Buoyancy Laboratory98.2 Test Results," SSL Document Number 99-001, March 1999.
Space Experiment Module
- Roberts, B., Shook, L., Hossaini, L., and R. Cohen, "Analysis of Three-DimensionalRoller Performance in a Micro-g Environment," in 1999 Shuttle Small Payloads Project SymposiumProceedings, NASA-CP-1999-209476, 13-15 September 1999 (also published as SSL Document Number 99-010).
- "Student's Space Wrench to Get Test on Glenn Shuttle" (22 October 1998 University of Maryland Press Release)
- "Historic John Glenn Flight To Feature Maryland And Goddard Science Experiments" (October 1998 edition of Goddard News, Volume 2, Number 42)
- Interview on Prince George's TV news (October 27, 1998)
- Interview on WMAL (October 27, 1998)
- Interview on DC News channel 9 news (October 27, 1998)
- Pieces of Upper St. Clair to hit space: Students'projects to blast off with Glenn, Shuttle (October 28, 1998 article in the Pittsburgh Tribune Review)
- "Grad student designs Glenn's space wrench" (29 October 1998 article in the The Diamondback, Number 43)
- "Grad student walking on air as his wrench blasts off" (29 October 1998 article in the The Prince George's Journal)
- Story on Discovery News on the Discovery channel (October 30, 1998)
- "UM graduate student's project goes aloft with Glenn: Space socket wrench to undergo testing" (30 October 1998 article in the Baltimore Sun)
- "Student's Wrench Getting First Real Space Test on Discovery's Flight" (3 November 1998 article in the Outlook: The University of Maryland Faculty and Staff Weekly Newspaper)
- "Flight test area man's handiwork" (November 4, 1998 article in the Youngstown Vindicator)
- "A Wrench That is Out of This World" (5 November 1998 article in Prince George's Sentinel)
- "Wrenching experience" (12 November 1998 article in the Canfield Town Crier)
- "A Wrench from Space" (March 1999 article in the Home Technology Newsfront section of Popular Science)
- "Tools of the Trade" (Winter 1999 article in College Park Magazine)
- "Bringing Space Technologies Down to Earth" (NASA's Goddard Space Flight Center 1998 Technology Transfer Report)
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