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There are a total of 1031821 record(s) matching your query.
Sorted by: NASA Center in Ascending order
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Studies of Pilot-Induced Oscillation
Author(s): Powers, B. G.
Abstract: Total In-Flight Simulator permits reliable evaluation of landing characteristics of aircraft with PIO. Report discusses simulation requirements for investigating PIO characteristics and includes evaluation of relative merits ...
NASA Center: Ames Research Center
Publication Year: 1986
Added to NTRS: 2005-09-30
Accession Number: 86B10382; Document ID: 19860000382; Report Number: ARC-11601
Large-scale sparse singular value computations
Author(s): Berry, Michael W.
Abstract: Four numerical methods for computing the singular value decomposition (SVD) of large sparse matrices on a multiprocessor architecture are presented. Lanczos and subspace iteration-based methods for determining several of the ...
NASA Center: Ames Research Center
Publication Year: 1992
Added to NTRS: 2004-11-03
Accession Number: 92A35536; Document ID: 19920052912
Non-Equilibrium Turbulence Modeling for High Lift Aerodynamics
Author(s): Durbin, P. A.
Abstract: This phase is discussed in ('Non linear kappa - epsilon - upsilon(sup 2) modeling with application to high lift', Application of the kappa - epsilon -upsilon(sup 2) model to multi-component airfoils'). Further results are ...
NASA Center: Ames Research Center
Publication Year: 1998
Added to NTRS: 2004-11-03
Document ID: 19990115797
Prediction of Aerodynamic Coefficients using Neural Networks for Sparse Data
Author(s): Rajkumar, T.; Bardina, Jorge
Abstract: Basic aerodynamic coefficients are modeled as functions of angles of attack and sideslip with vehicle lateral symmetry and compressibility effects. Most of the aerodynamic parameters can be well-fitted using polynomial ...
NASA Center: Ames Research Center
Publication Year: 2002
Added to NTRS: 2008-06-02
Document ID: 20020051082
Flame-Retardant Diaminobenzenes Containing Phosphorus
Author(s): Kourtides, Demetrius A.; Midroyannidis, John A.
Abstract: Diamines polymerized with dianhydrides or diacyl halides to produce fire-resistant polymers. Properties of polymers useful as matrices in laminated composite-material aircraft structural components that resist fire and ...
NASA Center: Ames Research Center
Publication Year: 1993
Added to NTRS: 2005-09-30
Accession Number: 93B10085; Document ID: 19930000085; Report Number: ARC-11425
An orthogonal oriented quadrature hexagonal image pyramid
Author(s): Watson, Andrew B.; Ahumada, Albert J., Jr.
Abstract: An image pyramid has been developed with basis functions that are orthogonal, self-similar, and localized in space, spatial frequency, orientation, and phase. The pyramid operates on a hexagonal sample lattice. The set of ...
NASA Center: Ames Research Center
Publication Year: 1987
Added to NTRS: 2005-08-25
Accession Number: 88N14630; Document ID: 19880005248; Report Number: A-88049, NAS 1.15:100054, NASA-TM-100054
Analytical modeling of helium II in forced flow conditions
Author(s): Ng, Y. S.; Lee, J. H.; Brooks, W.
Abstract: A numerical model was developed to examine the flow behavior of He II under forced flow conditions. The model basically solves the governing equations in the two-fluid model of He II, and can be used to assess the pump ...
NASA Center: Ames Research Center
Publication Year: 1987
Added to NTRS: 2004-11-03
Accession Number: 87A44827; Document ID: 19870057553; Report Number: AIAA PAPER 87-1495
Gas core nuclear rocket with fuel separation by MHD driven rotation
Author(s): Love, W. L.; Park, C.
Abstract: Operating characteristics and performance predictions for gas-core nuclear rocket with fuel separation by MHD-driven rotation
NASA Center: Ames Research Center
Publication Year: 1971
Added to NTRS: 2004-11-03
Accession Number: 71N33641; Document ID: 19710024165
Linearized lifting-surface theory for swept-back wings with slender plan forms
Author(s): Lomax, Harvard; Heaslet, Max A
Abstract: No Abstract Available
NASA Center: Ames Research Center
Publication Year: 1949
Added to NTRS: 2006-11-06
Accession Number: 93R11999; Document ID: 19930082709; Report Number: NACA-TN-1992
Aerothermal test results from the first flight of the Pegasus air-launched space booster
Author(s): Noffz, Gregory K.; Curry, Robert E.; Haering, Edward A., Jr.; Kolodziej, Paul
Abstract: A survey of temperature measurements at speeds through Mach 8.0 on the first flight of the Pegasus air-launched booster system is discussed. In addition, heating rates were derived from the temperature data obtained on the ...
NASA Center: Ames Research Center, Dryden Flight Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 92N11301; Document ID: 19920002083; Report Number: H-1672, NAS 1.15:4330, NASA-TM-4330
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