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There are a total of 185710 record(s) matching your query.
Sorted by: NASA Center in Ascending order
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Investigation of several aspects of LANDSAT-4 data quality
Abstract: No insurmountable problems in change detection analysis were found when portions of scenes collected simultaneously by LANDSAT 4 MSS and either LANDSAT 2 or 3. The cause of the periodic noise in LANDSAT 4 MSS images which ...
NASA Center: Ames Research Center
Publication Year: 1983
Added to NTRS: 2004-11-03
Accession Number: 83N32143; Document ID: 19830023872; Report Number: E83-10390, NAS 1.15:85335, NASA-TM-85335, QPR-2
Preliminary determination of spacecraft trajectories using on-board optical measurements
Author(s): Mclean, J. D.
Abstract: Star selection and bias error eliminating calibrations for five onboard optical measurements used to determine spacecraft trajectories
NASA Center: Ames Research Center
Publication Year: 1971
Added to NTRS: 2005-08-25
Accession Number: 71N38212; Document ID: 19710028736; Report Number: A-3522, NASA-TN-D-6551
Large-scale aeroacoustic research feasibility and conceptual design of test-section inserts for the Ames 80- by 120-foot wind tunnel
Author(s): Soderman, Paul T.; Olsen, Larry E.
Abstract: An engineering feasibility study was made of aeroacoustic inserts designed for large-scale acoustic research on aircraft models in the 80 by 120 foot Wind Tunnel at NASA Ames Research Center. The advantages and disadvantages ...
NASA Center: Ames Research Center
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 91N19824; Document ID: 19910010511; Report Number: A-88007, NAS 1.60:3020, NASA-TP-3020
Determination of the telluric water vapor absorption correction for astronomical data obtained from the Kuiper Airborne Observatory
Author(s): Erickson, E. F.; Simpson, J. P.; Kuhn, P. M.; Stearns, L. P.
Abstract: The amount of telluric water vapor along the line of sight of the Kuiper Airborne Observatory telescope as obtained concommitantly on 23 flights is compared with the NASA-Ames Michelson interferometer and with the ...
NASA Center: Ames Research Center
Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 79N20941; Document ID: 19790012770; Report Number: A-7805, NASA-TM-78582
Performance characteristics of an adaptive controller based on least-mean-square filters
Author(s): Mehta, Rajiv S.; Merhav, Shmuel J.
Abstract: A closed loop, adaptive control scheme that uses a least mean square filter as the controller model is presented, along with simulation results that demonstrate the excellent robustness of this scheme. It is shown that the ...
NASA Center: Ames Research Center
Publication Year: 1986
Added to NTRS: 2005-10-13
Accession Number: 87N18384; Document ID: 19870008951; Report Number: A-86403, NAS 1.15:88359, NASA-TM-88359
Full scale subsonic wind tunnel requirements and design studies
Author(s): Kelly, M. W.; Mort, K. W.; Hickey, D. H.
Abstract: The justification and requirements are summarized for a large subsonic wind tunnel capable of testing full-scale aircraft, rotor systems, and advanced V/STOL aircraft propulsion systems. The design considerations and ...
NASA Center: Ames Research Center
Publication Year: 1972
Added to NTRS: 2004-11-03
Accession Number: 72N33246; Document ID: 19720025596; Report Number: NASA-TM-X-62184
Flight evaluation of the DEEC secondary control air-start capability
Author(s): Johnson, J. B.; Nelson, J.
Abstract: The air-start capability of a secondary engine control (SEC) was tested for a DEEC-equipped F100 engine and installed in an F-15 airplane. Two air-start schedules were tested. The first was referred to as the group I ...
NASA Center: Ames Research Center, Dryden Flight Research Center
Publication Year: 1983
Added to NTRS: 2004-11-03
Accession Number: 84N18203; Document ID: 19840010135; Report Number: H-1186, NAS 1.15:84910, NASA-TM-84910
Research directions - Discussion
Abstract: Research and development, weightlessness simulation, calcium metabolism, manned space flight, pressure suits, immobilization, and aerospace medicine
NASA Center: Ames Research Center
Publication Year: 1971
Added to NTRS: 2004-11-03
Accession Number: 71N33275; Document ID: 19710023799
Techniques for correcting approximate finite difference solutions
Author(s): Nixon, D.
Abstract: A method of correcting finite-difference solutions for the effect of truncation error or the use of an approximate basic equation is presented. Applications to transonic flow problems are described and examples are given.
NASA Center: Ames Research Center
Publication Year: 1978
Added to NTRS: 2004-11-03
Accession Number: 78N26796; Document ID: 19780018853; Report Number: A-7491, NASA-TM-78499
Multiple Fault Isolation in Redundant Systems
Author(s): Pattipati, Krishna R.
Abstract: Fault diagnosis in large-scale systems that are products of modem technology present formidable challenges to manufacturers and users. This is due to large number of failure sources in such systems and the need to quickly ...
NASA Center: Ames Research Center
Publication Year: 1997
Added to NTRS: 2008-06-02
Document ID: 19990004612
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