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There are a total of 15 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Epitaxial Ferroelectric Ba(0.5)Sr(0.5)TiO3 Thin Films for Room-Temperature High-Frequency Tunable Element Applications
Author(s): Chen, C. L.; Feng, H. H.; Zhang, Z.; Brazdeikis, A.; Miranda, F. A.; VanKeuls, F. W.; Romanofsky, R. R.; Huang, Z. J.; Liou, Y.; Chu, W. K.; Chu, C. W.
Abstract: Perovskite Ba(0.5)SR(0.5)TiO3 thin films have been synthesized on (001) LaAl03 substrates by pulsed laser ablation. Extensive X-ray diffraction, rocking curve, and pole-figure studies suggest that the films are c-axis ...
NASA Center: Glenn Research Center
Publication Year: 1999
Added to NTRS: 2008-06-02
Document ID: 19990116702
Efficient mapping algorithms for scheduling robot inverse dynamics computation on a multiprocessor system
Author(s): Lee, C. S. G.; Chen, C. L.
Abstract: Two efficient mapping algorithms for scheduling the robot inverse dynamics computation consisting of m computational modules with precedence relationship to be executed on a multiprocessor system consisting of p identical ...
NASA Center: NASA (non Center Specific)
Publication Year: 1989
Added to NTRS: 2008-05-31
Accession Number: 90N29071; Document ID: 19900019755
Electromagnetic phenomena
Author(s): Chang, D. C.; Chang, V. W.; Chen, C. L.; Cheong, W.-M.; Duff, B. M.; Holly, S.; Iizuka, K.; Kao, C. C.; King, R. W. P.; Lamensdorf, D.
Abstract: Electromagnetic phenomena in various type antennas and arrays - antennas and waves in dielectric conducting and plasma media
NASA Center: NASA (non Center Specific)
Publication Year: 1967
Added to NTRS: 2006-11-06
Accession Number: 67N32221; Document ID: 19670022892
Computation Of Flow About A Helicopter Rotor
Author(s): Chen, C. L.; Mccroskey, W. J.
Abstract: Improved method developed to simulate numerically flow about helicopter rotor with multiple blades. Computes vortical wake beneath rotor without using simplified ad hoc mathematical models of effects in wake. Patched grids ...
NASA Center: Ames Research Center
Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10624; Document ID: 19890000624; Report Number: ARC-12227
Euler solution of multiblade rotor flow
Author(s): Chen, C. L.; Mccroskey, W. J.; Ying, S. X.
Abstract: A numerical method for solving the Euler equations for multiblade rotors has been developed and some preliminary results reported. The numerical scheme is a combination of several recent methods and algorithm improvements, ...
NASA Center: Ames Research Center
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 88N14322; Document ID: 19880004940; Report Number: A-87307, NAS 1.15:100014, NASA-TM-100014, USAAVSCOM-TR-87-A-15
Numerical solutions of forward-flight rotor flow using an upwind method
Author(s): Chen, C. L.; Mccroskey, W. J.; Obayashi, S.
Abstract: A finite-volume upwind algorithm for solving the 3-D Euler equations with a moving grid has been developed for computing helicopter forward-flight rotor flows. The computed pressure distributions and shock positions of ...
NASA Center: Ames Research Center
Publication Year: 1989
Added to NTRS: 2004-11-03
Accession Number: 89A42074; Document ID: 19890054703; Report Number: AIAA PAPER 89-1846
Numerical study of porous airfoils in transonic flow
Author(s): Chen, C. L.; Chow, C. Y.; Holst, T. L.; Vandalsem, W. R.
Abstract: A numerical study was made to examine the effect of a porous surface on the aerodynamic performance of a transonic airfoil. The pressure jump across the normal shock wave on the upper surface of the airfoil was reduced by ...
NASA Center: Ames Research Center
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85N27828; Document ID: 19850019516; Report Number: NAS 1.15:86713, NASA-TM-86713, REPT-85209
Resonant-tunnelling diode oscillator using a slot-coupled quasioptical open resonator
Author(s): Stephan, K. D.; Brown, E. R.; Parker, C. D.; Goodhue, W. D.; Chen, C. L., et al.
Abstract: A resonant-tunneling diode has oscillated at X-band frequencies in a microwave circuit consisting of a slot antenna coupled to a semiconfocal open resonator. Coupling between the open resonator and the slot oscillator ...
NASA Center: NASA (non Center Specific)
Publication Year: 1991
Added to NTRS: 2004-11-03
Accession Number: 91A35960; Document ID: 19910051337
The Space-Time CE/SE Method for Solving Maxwell's Equations in Time-Domain
Author(s): Wang, X. Y.; Chen, C. L.; Liu, Yen
Abstract: An innovative finite-volume-type numerical method named as the space-time conservation element and solution element (CE/SE) method is applied to solve time-dependent Maxwell's equations in this paper. Test problems of ...
NASA Center: Ames Research Center
Publication Year: 2002
Added to NTRS: 2004-11-03
Document ID: 20020068008
Numerical solutions of forward-flight rotor flow using an upwind method
Author(s): Chen, C. L.; Mccroskey, W. J.; Obayashi, S.
Abstract: No Abstract Available
NASA Center: Ames Research Center
Publication Year: 1991
Added to NTRS: 2004-11-03
Accession Number: 91A45292; Document ID: 19910060669
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