State transition matrix for inertial navigation systems
Error equation for inertial navigation systems formulated and solved in state space notation
Britting, K. R.↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The fully indecomposable matrix and its associated bipartite graph - An investigation of combinatorial and structural properties
Combinatorial properties of classes of nonnegative matrices
Roberts, E. J.↗
Energy levels and transition matrix elements of paramagnetic crystals for maser applications
Univac computer programs for energy levels and transition probabilities for ruby and emeralds
Berwin, R. W.↗
Theory of time-varying spectral analysis and complex Wishart matrix processes
Distributional results pertaining to complex Wishart processes and time varying spectral estimators on null hypothesis of stationary Gaussian time series
Dubman, M. R.↗
Minimum sensitivity design of linear multivariable feedback control systems by matrix spectral factorization
Scalar measure of system sensitivity to plant parameter variations applied to design of linear lumped stationary multivariable feedback control systems
Bongiorno, J. J., Jr.↗
Nonlinear dynamic analysis of shells of revolution by matrix displacement method
Nonlinear dynamic analysis of shells of revolution under symmetric and asymmetric loads, obtaining solutions for shallow cap buckling
Haisler, W. E.↗
Capillary matrix and fuel cell development study, part 2 Final report
Weight reduction and configuration of fuel cell
Michel, R.↗
Capillary matrix and fuel cell development study, appendix Final report
Small module test benches for monitoring performance evaluation parameters
Michel, R.↗
Direct methods for the solution of systems of linear equations with sparse coefficient matrix and related topics Final report, 1 Dec. 1967 - 31 Aug. 1970
Deriving algorithms for computations involving sparse matrices
Tewarson, R. P.↗
ALLMAT - A TSS/360 FORTRAN 4 subroutine for eigenvalues and eigenvectors of a general complex matrix
Subroutine ALLMAT for eigenvalues and eigenvectors of general complex nature
Fair, G.↗
Calculation of tables of inverses and determinants of finite segments of the Hilbert matrix
Calculating tables of inverses and determinants of finite segments of Hilbert matrices using variable precision rational arithmetic
Cuthill, E.↗
The effect of design and operating factors on life and performance of matrix fuel cells Final report
Design, temperature, carbon dioxide, and current density effects on alkaline hydrogen oxygen fuel cell performance
Bell, W. F.↗
The minimal bound on the estimation error covariance matrix in the presence of correlated driving noise
Increase approximation of estimation errors covariance between discrete measurements due to random forcing function uncertainty
Deckert, J. C.↗
Nonlinear dynamic analysis of shells of revolution by matrix displacement method
Nonlinear dynamic analysis of shells of revolution under symmetric and asymmetric loads, obtaining solutions for shallow cap buckling
Haisler, W. E.↗
Pendulum impact resistance of tungsten-fiber metal-matrix composites
Impact strength of Cu, Cu-Ni alloy and superalloy matrices reinforced with W fibers, studying temperature, heat treatment and fiber content and toughness effects
Petrasek, D. W.↗
Jones's matrix representation of optical instruments. I - Beam splitters
Jones reflection and transmission matrices representation for beam splitters, investigating reversibility and action on incident light amplitude and/or phase
Fymat, A. L.↗
Interferometer using RF switching matrix
Radio frequency switching technique for single receiver and data processing channel to be used for phase movement measurement is discussed. Components of interferometer radio frequency unit, X-band receiver, and interferometer data processing unit are illustrated. Elimination of major measurement error source is described.
Vanvleet, R. N.↗
Development of a High Temperature Heater using an Yttria Stabilized Zirconia Cored Brick Matrix
The Ames pilot heater is a ceramic regenerative heater that provides high temperature air for aerodynamic and combustion experiments. The development of this heater to provide a heat storage bed with temperature capability of about 4600 R is described. A bed was designed and installed having cored brick elements of yttria-stabilized zirconia. The bed dimensions were 14 inches in diameter by 10 feet high. The thermal stress limitations of the bed were studied and maximum air flow rates based upon these limits were established. A combustion reheat system was designed and installed to provide the necessary control over the bed temperature distribution. The revised heater system was successfully operated at a maximum bed temperature of 4600 R. The successful operation demonstrated that yttria-stabilized zirconia cored brick can satisfy the high temperature-long duration requirement for storage heater applications.
Smith, K. W.↗