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There are a total of 2126 record(s) matching your query.
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A distributed data acquisition system for aeronautics test facilities
Author(s): Fronek, Dennis L.; Setter, Robert N.; Blumenthal, Philip Z.; Smalley, Robert R.
Abstract: The NASA Lewis Research Center is in the process of installing a new data acquisition and display system. This new system will provide small and medium sized aeronautics test facilities with a state-of-the-art real-time data ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N16851; Document ID: 19870007418; Report Number: E-3417, NAS 1.15:88961, NASA-TM-88961
Interaction between a vortex and a turbulent boundary layer. Part 1: Mean flow evolution and turbulence properties
Author(s): Westphal, Russell V.; Pauley, Wayne R.; Eaton, John K.
Abstract: An experimental study was conducted to examine the interaction between a single weak streamwise vortex and a two-dimensional turbulent boundary layer. Attention was focused on characterizing the effect of the boundary layer ...
NASA Center: Ames Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N24640; Document ID: 19870015207; Report Number: A-86408, NAS 1.15:88361, NASA-TM-88361
Large space antennas: A systems analysis case history
Abstract: The value of systems analysis and engineering is aptly demonstrated by the work on Large Space Antennas (LSA) by the NASA Langley Spacecraft Analysis Branch. This work was accomplished over the last half-decade by augmenting ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N20352; Document ID: 19870010919; Report Number: NAS 1.15:89072, NASA-TM-89072
Turbulence modeling and surface heat transfer in a stagnation flow region
Author(s): Wang, Chi R.; Yeh, Frederick C.
Abstract: Analysis for the turbulent flow field and the effect of freestream turbulence on the surface heat transfer rate of a stagnation flow is presented. The emphasis is on modeling and its augmentation of surface heat transfer ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N26302; Document ID: 19870016869; Report Number: E-3682, NAS 1.15:100132, NASA-TM-100132
Measurements of the unsteady flow field within the stator row of a transonic axial-flow fan. 1: Measurement and analysis technique
Author(s): Suder, K. L.; Hathaway, M. D.; Okiishi, T. H.; Strazisar, A. J.; Adamczyk, J. J.
Abstract: This two-part paper presents laser anemometer measurements of the unsteady velocity field within the stator row of a transonic axial-flow fan. The objective is to provide additional insight into unsteady blade-row ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N16789; Document ID: 19870007356; Report Number: E-3393, NAS 1.15:88945, NASA-TM-88945, USAAVSCOM-TR-86-C-30
Description of a magnetic bearing test fixture
Author(s): Groom, Nelson J.; Poole, William L.
Abstract: A description of a microcomputer controlled magnetic bearing test fixture is presented. Parameters which are controlled are magnetic bearing current and gaps. Parameters which are measured are magnetic bearing gaps, magnetic ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N20478; Document ID: 19870011045; Report Number: NAS 1.15:89081, NASA-TM-89081
Small-scale rotor test rig capabilities for testing vibration alleviation algorithms
Author(s): Jacklin, Stephen A.; Leyland, Jane Anne
Abstract: A test was conducted to assess the capabilities of a small scale rotor test rig for implementing higher harmonic control and stability augmentation algorithms. The test rig uses three high speed actuators to excite the ...
NASA Center: Ames Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N30102; Document ID: 19870020669; Report Number: A-87271, NAS 1.15:100002, NASA-TM-100002
Coaxial tube array space transmission line characterization
Author(s): Switzer, Colleen A.; Bents, David J.
Abstract: The coaxial tube array tether/transmission line used to connect an SP-100 nuclear power system to the space station was characterized over the range of reactor-to-platform separation distances of 1 to 10 km. Characterization ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N22003; Document ID: 19870012570; Report Number: E-3531, NAS 1.15:89864, NASA-TM-89864
Liquid sheet radiator
Author(s): Chubb, Donald L.; White, K. Alan, III
Abstract: A new external flow radiator concept, the liquid sheet radiator (LSR), is introduced. The LSR sheet flow is described and an expression for the length/width (l/w), ratio is presented. A linear dependence of l/w on velocity ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N18786; Document ID: 19870009353; Report Number: E-3497, NAS 1.15:89841, NASA-TM-89841
Direct simulation of a turbulent oscillating boundary layer
Author(s): Spalart, Philippe R.; Baldwin, Barrett S.
Abstract: The turbulent boundary layer driven by a freestream velocity that varies sinusoidally in time around a zero mean is considered. The flow has a rich behavior including strong pressure gradients, inflection points, and ...
NASA Center: Ames Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N24642; Document ID: 19870015209; Report Number: A-87220, NAS 1.15:89460, NASA-TM-89460
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