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There are a total of 36 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Coupled dynamics analysis of wind energy systems
Author(s): Hoffman, J. A.
Abstract: A qualitative description of all key elements of a complete wind energy system computer analysis code is presented. The analysis system addresses the coupled dynamics characteristics of wind energy systems, including the ...
NASA Center: NASA (non Center Specific)
Publication Year: 1977
Added to NTRS: 2008-06-30
Accession Number: 77N20558; Document ID: 19770013614; Report Number: NASA-CR-135152, PPI-1014-11
WEST-3 wind turbine simulator development
Author(s): Hoffman, J. A.; Sridhar, S.
Abstract: The software developed for WEST-3, a new, all digital, and fully programmable wind turbine simulator is given. The process of wind turbine simulation on WEST-3 is described in detail. The major steps are, the processing of ...
NASA Center: NASA (non Center Specific)
Publication Year: 1985
Added to NTRS: 2005-10-13
Accession Number: 87N12046; Document ID: 19870002613; Report Number: DOE/NASA/0247-3, NAS 1.26:174983, NASA-CR-174983, PPI-FID-300086-VOL-3
Optical monitoring of X-ray burst sources
Author(s): Abramenko, A. N.; Gershberg, R. E.; Pavlenko, E. P.; Prokofeva, V. V.; Lewin, W. H. G.; Hoffman, J. A.; Li, F. K.; Van Paradijs, J. A.
Abstract: Results are presented for simultaneous optical and X-ray observations of the X-ray burst sources MXB 183705 and 1916-05. On two occasions during these observations an X-ray burst from MXB 183705 was detected by SAS 3, but no ...
NASA Center: NASA (non Center Specific)
Publication Year: 1978
Added to NTRS: 2004-11-03
Accession Number: 78A45601; Document ID: 19780061692
An absorption feature in the spectrum of the pulsed hard X-ray flux from 4U0115 63
Author(s): Wheaton, W. A.; Doty, J. P.; Primini, F. A.; Cooke, B. A.; Dobson, C. A.; Goldman, A.; Hecht, M.; Howe, S. K.; Hoffman, J. A.; Scheepmaker, A., et al.
Abstract: A spectral feature, apparently an absorption line, has been observed at an energy of 20.1 or - 0.5 keV in the pulsed flux of the 3.61-s X-ray pulsar 4U 011563 by using the UCSD/MIT instrument on HEAO 1. The line strength, ...
NASA Center: Johnson Space Center
Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 80A13101; Document ID: 19800028931
Galactic distribution of X-ray burst sources
Author(s): Lewin, W. H. G.; Hoffman, J. A.; Doty, J.; Clark, G. W.; Swank, J. H.; Becker, R. H.; Pravdo, S. H.; Serlemitsos, P. J.
Abstract: Data on X-ray bursts recorded by the OSO-8 and SAS-3 satellites and criteria (rise time, duration, recurrence) for X-ray bursts are examined in a study of possible correlation between the galactic longitude distribution of ...
NASA Center: Goddard Space Flight Center
Publication Year: 1977
Added to NTRS: 2004-11-03
Accession Number: 77A33130; Document ID: 19770050278
HEAO observations of X-ray bursts from MXB1730-335
Author(s): Hoffman, J. A.; Wheaton, W. A.; Primini, F. A.; Campbell, P.; Matteson, J. L.; Gruber, D. E.; Peterson, L. E.; Swank, J. H.; Boldt, E. A.; Holt, S. S., et al.
Abstract: The March 18, 1978 burst activity of the rapid burster MXB 1730-335 was studied by examining 58 minutes of quick-look data for the A2 and A4 experiments on HEAO 1. Very large, moderately sized, and small bursts are ...
NASA Center: Goddard Space Flight Center
Publication Year: 1978
Added to NTRS: 2004-11-03
Accession Number: 79A16644; Document ID: 19790032631
Simultaneous radio and X-ray observations of the X-ray burst source MXB 1636-53
Author(s): Thomas, R. M.; Duldig, M. L.; Haynes, R. F.; Simons, L. W.; Murdin, P.; Hoffman, J. A.; Lewin, W. H. G.; Wheaton, W. A.; Doty, J.
Abstract: On June 17, 1977, the X-ray burst source MXB 1636-53 was simultaneously monitored for about 4 hr with the Parkes 64-m radio telescope at a frequency of 14.7 GHz and the SAS 3 X-ray satellite (1.3-12 keV). One X-ray burst was ...
NASA Center: NASA (non Center Specific)
Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 79A31602; Document ID: 19790047589
Discovery of X-ray bursts from several sources near the galactic centre
Author(s): Lewin, W. H. G.; Hoffman, J. A.; Doty, J.; Hearn, D. R.; Clark, G. W.; Jernigan, J. G.; Li, F. K.; Mcclintock, J. E.; Richardson, J.
Abstract: Three X-ray burst sources have been discovered within approximately 0.5 deg of the Galactic center. All bursts from this region show a low-energy cutoff near 3 keV. The bursts from MXB 1743-29 show distinct double and triple ...
NASA Center: NASA (non Center Specific)
Publication Year: 1976
Added to NTRS: 2004-11-03
Accession Number: 77A16718; Document ID: 19770033866
Discovery of X-ray bursts from two sources in Aquila
Author(s): Lewin, W. H. G.; Li, F. K.; Hoffman, J. A.; Doty, J.; Buff, J.; Clark, G. W.; Rappaport, S.
Abstract: Two X-ray burst sources have been discovered in Aquila with the aid of the SAS 3 X-ray Observatory; MXB 1906 00 and Aql MXB. The present paper reports on source positions, spectra, time structure, and burst energy. Five ...
NASA Center: NASA (non Center Specific)
Publication Year: 1976
Added to NTRS: 2004-11-03
Accession Number: 77A16719; Document ID: 19770033867
The HEAO 1 A-4 catalog of high-energy X-ray sources
Author(s): Levine, A. M.; Lang, F. L.; Lewin, W. H. G.; Primini, F. A.; Dobson, C. A.; Doty, J. P.; Hoffman, J. A.; Howe, S. K.; Scheepmaker, A.; Wheaton, W. A., et al.
Abstract: Results are reported from an all-sky survey carried out at high X-ray energies (13-180 keV) from August 1977 until January 1979 using data obtained with the UCSD/MIT Hard X-Ray and Low-Energy Gamma-Ray Instrument on the HEAO ...
NASA Center: NASA (non Center Specific)
Publication Year: 1984
Added to NTRS: 2004-11-03
Accession Number: 84A33450; Document ID: 19840050663
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