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There are a total of 1031821 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Helicopter simulation technology: An Ames Research Center perspective
Author(s): Bray, R. S.
Abstract: The total experience for evidence regarding the levels of motion and visual cueing fidelity required for handling-qualities research in ground-based simulators is reviewed. Positive contributions of cockpit motion were ...
NASA Center: Ames Research Center
Publication Year: 1982
Added to NTRS: 2009-01-14
Accession Number: 82N23227; Document ID: 19820015353
Stress analysis of circular semimonocoque cylinders with cutouts
Author(s): Mccomb, Harvey G , Jr
Abstract: A method is presented for analyzing the stresses about cutouts in circular semimonocoque cylinders with flexible rings. The method involves the use of so-called perturbation stress distributions which are superposed on the ...
NASA Center: Langley Research Center
Publication Year: 1955
Added to NTRS: 2009-01-14
Accession Number: 93R21542; Document ID: 19930092252; Report Number: NACA-TR-1251
Exact solutions of laminar-boundary-layer equations with constant property values for porous wall with variable temperature
Author(s): Donoughe, Patrick L; Livingood, John N B
Abstract: Exact solution of the laminar-boundary-layer equations for wedge-type flow with constant property values are presented for transpiration-cooled surfaces with variable wall temperatures. The difference between wall and stream ...
NASA Center: Langley Research Center
Publication Year: 1955
Added to NTRS: 2009-01-14
Accession Number: 93R21528; Document ID: 19930092238; Report Number: NACA-TR-1229
Flow and drag formulas for simple quadrics
Author(s): Zahm, A F
Abstract: This report gives the pressure distribution and resistance found by theory and experiment for simple quadrics fixed in an infinite uniform stream of practically incompressible fluid. The experimental values pertain to air ...
NASA Center: NASA (non Center Specific)
Publication Year: 1927
Added to NTRS: 2009-01-14
Accession Number: 93R20610; Document ID: 19930091320; Report Number: NACA-TR-253
What is the significance of neural networks for AI
Author(s): Szu, Harold
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific)
Publication Year: 1988
Added to NTRS: 2009-01-14
Accession Number: 91N71358; Document ID: 19910073803
Application of a channel design method to high-solidity cascades and tests of an impulse cascade with 90 degrees of turning
Author(s): Stanitz, John D; Sheldrake, Leonard J
Abstract: A technique is developed for the application of a channel design method to the design of high-solidity cascades with prescribed velocity distributions as a function of arc length along the blade-element profile. The ...
NASA Center: Glenn Research Center
Publication Year: 1953
Added to NTRS: 2009-01-14
Accession Number: 93R21442; Document ID: 19930092152; Report Number: NACA-TR-1116
Theoretical and experimental investigation of the subsonic-flow fields beneath swept and unswept wings with tables or vortex-induced velocities
Author(s): Alford, William J , Jr
Abstract: The flow-field characteristics beneath swept and unswept wings as determined by potential-flow theory are compared with the experimentally determined flow fields beneath swept and unswept wing-fuselage combinations. The ...
NASA Center: Langley Research Center
Publication Year: 1957
Added to NTRS: 2009-01-14
Accession Number: 93R21607; Document ID: 19930092317; Report Number: NACA-TR-1327
Some effects of frequency on the contribution of a vertical tail to the free aerodynamic damping of a model oscillating in yaw
Author(s): Bird, John D; Fisher, Lewis R; Hubbard, Sadie M
Abstract: The damping in yaw and the directional stability of a model freely oscillating in yaw were measured tail-off and tail-on and compared with the values obtained by theoretical consideration of the unsteady lift associated with ...
NASA Center: Langley Research Center
Publication Year: 1953
Added to NTRS: 2009-01-14
Accession Number: 93R20388; Document ID: 19930091098; Report Number: NACA-TR-1130
Equations, tables, and charts for compressible flow
Abstract: This report, which is a revision and extension of NACA-TN-1428, presents a compilation of equations, tables, and charts useful in the analysis of high-speed flow of a compressible fluid. The equations provide relations for ...
NASA Center: Ames Research Center
Publication Year: 1953
Added to NTRS: 2009-01-14
Accession Number: 93R20349; Document ID: 19930091059; Report Number: NACA-TR-1135
Transverse vibrations of hollow thin-walled cylindrical beams
Author(s): Budiansky, Bernard; Kruszewski, Edwin T
Abstract: The variational principle, differential equations, and boundary conditions considered appropriate to the analysis of transverse vibrations of hollow thin-walled cylindrical beams are shown. General solutions for the modes ...
NASA Center: Langley Research Center
Publication Year: 1953
Added to NTRS: 2009-01-14
Accession Number: 93R20259; Document ID: 19930090969; Report Number: NACA-TR-1129
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