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There are a total of 9 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Shuttle: Reaction control system. Cryogenic liquid distribution system: Study
Author(s): Akkerman, J. W.
Abstract: A cryogenic liquid distribution system suitable for the reaction control system on space shuttles is described. The system thermodynamics, operation, performance and weight analysis are discussed along with the design, ...
NASA Center: Johnson Space Center Publication Year: 1972
Added to NTRS: 2009-03-06
Accession Number: 73N16765; Document ID: 19730078850; Report Number: MSC-06737, NASA-TM-X-68913
Development of the NASA/Baylor VAD
Author(s): Aber, G. S.; Akkerman, J. W.; Bozeman, R. J., Jr.; Saucler, D. R.; Bacak, J. W.; Svejkovsky, P. A.; Damm, G. A.; Mizuguchi, K.; Noon, G. P.; Nose, Y., et al.
Abstract: A cooperative effort between the NASA/Johnson Space Center (JSC) and the Baylor College of Medicine (BCM) has been underway since 1988 to develop a long-term implantable Ventricular Assist Device (VAD). The VAD is intended ...
NASA Center: Johnson Space Center Publication Year: 1994
Added to NTRS: 2008-06-02
Accession Number: 94N30458; Document ID: 19940025953
Use of parametric equations to optimize a landing rocket and subsequent model testing
Author(s): Akkerman, J. W.; Jenkins, L. W.; Vaughan, C. A.
Abstract: No Abstract Available
NASA Center: Johnson Space Center Publication Year: 1964
Added to NTRS: 2008-05-29
Accession Number: 70N75388; Document ID: 19700075685; Report Number: NASA-TM-X-65052
Pressurized gas reaction control system for Little Joe 2, Project Apollo
Author(s): Akkerman, J. W.
Abstract: No Abstract Available
NASA Center: Johnson Space Center Publication Year: 1962
Added to NTRS: 2008-01-29
Accession Number: 70N76260; Document ID: 19700076557; Report Number: NASA-TM-X-65136
Hydrazine monopropellant reciprocating engine development
Author(s): Akkerman, J. W.
Abstract: A hydrazine fueled piston engine for providing 11.2 kW was developed to satisfy the need for an efficient power supply in the range from 3.7 to 74.6 kW where existing nonair-breathing power supplies such as fuel cells or ...
NASA Center: Johnson Space Center Publication Year: 1979
Added to NTRS: 2007-07-23
Accession Number: 79N22540; Document ID: 19790014369
High altitude aerodynamic platform concept evaluation and prototype engine testing
Author(s): Akkerman, J. W.
Abstract: A design concept has been developed for maintaining a 150-pound payload at 60,000 feet altitude for about 50 hours. A 600-pound liftoff weight aerodynamic vehicle is used which operates at sufficient speeds to withstand ...
NASA Center: Johnson Space Center Publication Year: 1984
Added to NTRS: 2005-10-13
Accession Number: 84N16182; Document ID: 19840008114; Report Number: NAS 1.15:58256, NASA-TM-58256, S-530
Compression Ratio Adjuster
Author(s): Akkerman, J. W.
Abstract: New mechanism alters compression ratio of internal-combustion engine according to load so that engine operates at top fuel efficiency. Ordinary gasoline, diesel and gas engines with their fixed compression ratios are ...
NASA Center: Johnson Space Center Publication Year: 1982
Added to NTRS: 2005-09-30
Accession Number: 82B10072; Document ID: 19820000072; Report Number: MSC-18807
Simpler valve for reciprocating engines
Author(s): Akkerman, J. W.
Abstract: Simpler design eliminating camshafts, cams, and mechanical springs should improve reliability of hydrazine powered reciprocating engines. Valve is expected to improve efficiency, and reduce weight of engines in range up to ...
NASA Center: Johnson Space Center Publication Year: 1978
Added to NTRS: 2005-09-30
Accession Number: 78B10276; Document ID: 19780000276; Report Number: MSC-16239
Hydrazine monopropellant reciprocating engine development
Author(s): Akkerman, J. W.
Abstract: A hydrazine-fueled piston-type engine for providing 11.2 kW (15 hp) has been developed to satisfy the need for an efficient power supply in the range from 3.7 to 74.6 kW (5 to 100 hp) where existing nonair-breathing power ...
NASA Center: Johnson Space Center Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 80A46548; Document ID: 19800062378; Report Number: ASME PAPER 78-WA/AERO-12
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