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There are a total of 1753 record(s) matching your query.
Sorted by: NASA Center in Ascending order
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Structure and grain coarsening during the processing of engineering ceramics
Author(s): Shaw, Nancy J.
Abstract: Studies have been made of three ceramic systems (Al2O3, Y2O3/MgO, and SiC/C/B), both to explore a surface area/density diagram approach to examining the coarsening processes during sintering and to explore an alternative ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-08-25
Accession Number: 88N11838; Document ID: 19880002456; Report Number: E-3860, NAS 1.15:100235, NASA-TM-100235
Modification of the MML turbulence model for adverse pressure gradient flows
Author(s): Conley, Julianne M.
Abstract: Computational fluid dynamics is being used increasingly to predict flows for aerospace propulsion applications, yet there is still a need for an easy to use, computationally inexpensive turbulence model capable of accurately ...
NASA Center: Glenn Research Center
Publication Year: 1994
Added to NTRS: 2008-08-04
Accession Number: 94N32947; Document ID: 19940028441; Report Number: E-8690, NAS 1.15:106544, NASA-TM-106544
Unsteady flows in a single-stage transonic axial-flow fan stator row
Author(s): Hathaway, Michael D.
Abstract: Measurements of the unsteady velocity field within the stator row of a transonic axial-flow fan were acquired using a laser anemometer. Measurements were obtained on axisymmetric surfaces located at 10 and 50 percent span ...
NASA Center: Glenn Research Center
Publication Year: 1986
Added to NTRS: 2005-10-13
Accession Number: 87N16805; Document ID: 19870007372; Report Number: E-3190, NAS 1.15:88929, NASA-TM-88929, USAAVSCOM-TR-86-C-29
Analysis of large quasistatic deformations of inelastic solids by a new stress based finite element method
Author(s): Reed, Kenneth W.
Abstract: A new hybrid stress finite element algorithm suitable for analyses of large quasistatic deformation of inelastic solids is presented. Principal variables in the formulation are the nominal stress rate and spin. The finite ...
NASA Center: Glenn Research Center
Publication Year: 1992
Added to NTRS: 2005-08-25
Accession Number: 93N13260; Document ID: 19930004072; Report Number: NAS 1.26:189235, NASA-CR-189235
Feasibility of coupling between a single-mode elliptical-core fiber and a single mode rib waveguide over temperature
Author(s): Tuma, Margaret L.
Abstract: To determine the feasibility of coupling the output of an optical fiber to a rib waveguide in a temperature environment ranging from 20 C to 300 C, a theoretical calculation of the coupling efficiency between the two was ...
NASA Center: Glenn Research Center
Publication Year: 1995
Added to NTRS: 2008-08-04
Accession Number: 96N12038; Document ID: 19960002030; Report Number: E-9950, NAS 1.15:107078, NASA-TM-107078
Passive Magnetic Bearing With Ferrofluid Stabilization
Author(s): Jansen, Ralph; DiRusso, Eliseo
Abstract: A new class of magnetic bearings is shown to exist analytically and is demonstrated experimentally. The class of magnetic bearings utilize a ferrofluid/solid magnet interaction to stabilize the axial degree of freedom of a ...
NASA Center: Glenn Research Center
Publication Year: 1996
Added to NTRS: 2005-08-25
Accession Number: 96N21653; Document ID: 19960015875; Report Number: E-10033, NAS 1.15:107154, NASA-TM-107154
A graphics subsystem retrofit design for the bladed-disk data acquisition system
Author(s): Carney, R. R.
Abstract: A graphics subsystem retrofit design for the turbojet blade vibration data acquisition system is presented. The graphics subsystem will operate in two modes permitting the system operator to view blade vibrations on an ...
NASA Center: Glenn Research Center
Publication Year: 1983
Added to NTRS: 2004-11-03
Accession Number: 84N12730; Document ID: 19840004662; Report Number: E-1760, NAS 1.15:83510, NASA-TM-83510
Elastohydrodynamic lubrication of point contacts
Author(s): Hamrock, B. J.
Abstract: A procedure for the numerical solution of the complete, isothermal, elastohydrodynamic lubrication problem for point contacts is given. This procedure calls for the simultaneous solution of the elasticity and Reynolds ...
NASA Center: Glenn Research Center
Publication Year: 1976
Added to NTRS: 2005-10-13
Accession Number: 76N27571; Document ID: 19760020483; Report Number: E-7964, NASA-TM-X-73454
Effects of Flow Control on the Aerodynamics of a Tandem Inlet Guide Vane
Author(s): Vandeputte, Thomas W.
Abstract: An aerodynamic investigation was performed to assess the effectiveness of combined boundary layer suction and trailing edge blowing at reducing the blade profile losses and the wake momentum deficit of a cascade of tandem ...
NASA Center: Glenn Research Center
Publication Year: 2000
Added to NTRS: 2004-11-03
Document ID: 20000032455
A laser velocimeter investigation of the normal shock-wave boundary layer interaction
Author(s): Chriss, Randall M.
Abstract: Nonintrusive 3-D measurements were made of a normal shock wave/turbulent boundary layer interaction. The measurements were made through a quadrant of a square test section of a continuous flow supersonic wind tunnel in which ...
NASA Center: Glenn Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N32440; Document ID: 19910023126; Report Number: E-6504, NAS 1.15:105201, NASA-TM-105201
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