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There are a total of 605 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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ICE System: Interruptible control expert system
Author(s): Vezina, James M.
Abstract: The Interruptible Control Expert (ICE) System is based on an architecture designed to provide a strong foundation for real-time production rule expert systems. Three principles are adopted to guide the development of ICE. A ...
NASA Center: NASA (non Center Specific)
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 91N30721; Document ID: 19910021407; Report Number: NAS 1.26:186966, NASA-CR-186966, TR-90-121
Static thrust-vectoring performance of nonaxisymmetric convergent-divergent nozzles with post-exit yaw vanes
Author(s): Foley, Robert J.; Pendergraft, Odis C., Jr.
Abstract: A static (wind-off) test was conducted in the Static Test Facility of the 16-ft transonic tunnel to determine the performance and turning effectiveness of post-exit yaw vanes installed on two-dimensional convergent-divergent ...
NASA Center: Langley Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N21059; Document ID: 19910011746; Report Number: L-16784, NAS 1.60:3085, NASA-TP-3085
Experimental determination of aerodynamic damping in a three-stage transonic axial-flow compressor
Author(s): Newman, Frederick A.
Abstract: Rotor blade aerodynamic damping is experimentally determined in a three-stage transonic axial flow compressor having design aerodynamic performance goals of 4.5:1 pressure ratio and 65.5 lbm/sec weight flow. The combined ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 88N27200; Document ID: 19880017816; Report Number: E-4267, NAS 1.15:100953, NASA-TM-100953
Parallel algorithms for placement and routing in VLSI design
Author(s): Brouwer, Randall Jay
Abstract: The computational requirements for high quality synthesis, analysis, and verification of very large scale integration (VLSI) designs have rapidly increased with the fast growing complexity of these designs. Research in the ...
NASA Center: NASA (non Center Specific)
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N15770; Document ID: 19910006457; Report Number: NAS 1.26:187787, NASA-CR-187787
Search problems in mission planning and navigation of autonomous aircraft
Author(s): Krozel, James A.
Abstract: An architecture for the control of an autonomous aircraft is presented. The architecture is a hierarchical system representing an anthropomorphic breakdown of the control problem into planner, navigator, and pilot systems. ...
NASA Center: NASA (non Center Specific)
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 88N19448; Document ID: 19880010064; Report Number: NAS 1.26:182666, NASA-CR-182666
Feasibility study for a microwave-powered ozone sniffer aircraft
Author(s): Botros, David F.; Cody, Charlotte K.; Forden, Noah P.; Helsing, Martin A.; Jutras, Thomas H.; Kim, Dohoon; Labarre, Christopher; Odin, Ethan M.; Sandler, Scott B.
Abstract: The preliminary design of a high-altitude, remotely-piloted, atmospheric-sampling aircraft powered by microwave energy beamed from ground-based antenna was completed. The vehicle has a gross weight of 6720 pounds and is ...
NASA Center: NASA (non Center Specific)
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 90N23397; Document ID: 19900014081; Report Number: NAS 1.26:186660, NASA-CR-186660
An analytical study of the effects of transverse shear deformation and anisotropy on buckling loads of laminated cylinders
Author(s): Jegley, Dawn C.
Abstract: Buckling loads of thick-walled orthotropic and anisotropic simply supported circular cylinders are predicted using a higher-order transverse-shear deformation theory. A comparison of buckling loads predicted by the ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2005-08-25
Accession Number: 88N13387; Document ID: 19880004005; Report Number: NAS 1.15:100508, NASA-TM-100508
A Progressive Damage Methodology for Residual Strength Predictions of Center-Crack Tension Composite Panels
Author(s): Coats, Timothy William
Abstract: An investigation of translaminate fracture and a progressive damage methodology was conducted to evaluate and develop a residual strength prediction capability for laminated composites with through penetration notches. This ...
NASA Center: Langley Research Center
Publication Year: 1996
Added to NTRS: 2005-08-25
Accession Number: 96N33024; Document ID: 19960047314; Report Number: NAS 1.26:201590, NASA-CR-201590
An experimental study of natural and forced modes in an axisymmetric jet
Author(s): Raman, Ganesh; Rice, Edward J.; Reshotko, Eli
Abstract: The experiment consisted of two parts. The first part was an effort to study naturally occurring instability modes in the axisymmetric shear layer of a high Reynolds number turbulent jet. Untripped (transitional) and tripped ...
NASA Center: Glenn Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N32074; Document ID: 19910022760; Report Number: E-6091, NAS 1.15:105225, NASA-TM-105225
Application of jet-shear-layer mixing and effervescent atomization to the development of a low-NO(x) combustor
Author(s): Colantonio, Renato Olaf
Abstract: An investigation was conducted to develop appropriate technologies for a low-NO(x), liquid-fueled combustor. The combustor incorporates an effervescent atomizer used to inject fuel into a premixing duct. Only a fraction of ...
NASA Center: Glenn Research Center
Publication Year: 1993
Added to NTRS: 2005-08-25
Accession Number: 94N11234; Document ID: 19940006762; Report Number: E-7353, NAS 1.15:105888, NASA-TM-105888
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