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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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Morse eigenfunctions for variational calculation of diatomic molecules vibrational-rotational energy level analysis, showing better convergence than harmonic oscillator basis
Multiphase two dimensional mixing and combustion of flow fields suspended in gaseous medium for propulsion systems problems, obtaining governing equations
TOPS /thermoelectric outer planet spacecraft/ project integrating R and D for specific space missions
Weak noise and threshold effects on estimation error for nonlinear PM systems
Large angle gyro sensing system for body mount on unmanned Mars surface vehicle
Expectation values and kinetic energy for vibrational-rotational levels of ground states of H2, HD, and D2
Nonlinear differential equations describing stability of fast nuclear reactor with incore thermionic converters and reactivity feedback
Elastic behavior of bone as two phase composite material, using ultrasonically measured hydroxyapatite moduli
Thermogravimetric analysis of goethite-rich sample of Mars type limonite, considering sorption process relation to Mars environment and polar caps
Increase approximation of estimation errors covariance between discrete measurements due to random forcing function uncertainty
Multiphase two dimensional mixing and combustion of flow fields suspended in gaseous medium for propulsion systems problems, obtaining governing equations
A technique is described and utilized in the study of the solutions to various general problems in optimal control theory, which are converted in to Lagrange problems in the calculus of variations. This is accomplished by mapping certain properties in Euclidean space onto closed control and state regions. Nonlinear control problems with a unit m cube as control region and unit n cube as state region are considered.
Study of the failure of glass windows, which is probably the most severe problem confronting the SST program outside of the psychological and sociological aspects. The structural configuration most likely to suffer a window failure due to sonic boom excitation is one representable by a single large room, a single large window, and an open door. It is suggested that if the open door were replaced with another window the resultant stresses in both windows would be substantially reduced.
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Controllability of time-invariant discrete-time bilinear systems is discussed. Bilinear systems are classified into two categories: homogeneous and inhomogeneous. Sufficient conditions which ensure the global controllability of discrete-time bilinear systems are obtained by localized analysis in control variables.
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The subject of this paper is the controllability of time-invariant discrete-time bilinear systems. Bilinear systems are classified into two categories; homogeneous and inhomogeneous. Sufficient conditions which ensure the global controllability of discrete-time bilinear systems are obtained by localized analysis in control variables.
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