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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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Eigenfunction expansion technique to analyze three dimensional crack and wedge problems, emphasizing stress field near straight edged crack
Supersonic viscous flow around sharp corner at various expansion angles, giving pressure distributions and velocity profiles role
Addition of a secondary pneumatic modulation input improves the standard devices used on thermostatic expansion valves. The valves normally meter incoming refrigerant flow through an orifice valve controlled by a valve-actuating diaphragm.
New series of high expansion coefficient glasses can be sealed by fusion onto hot surfaces of metals and alloys. Glasses have relatively low working temperatures, good chemical durability, and can be used in electrical insulators and feedthroughs to fluid or vacuum systems.
Matched asymptotic expansions for jet issuing into cross flow
Sources of electron energy in weakly ionized expansions of nitrogen
Cosmic ray particle diffusion investigation using approximation evaluated for validity by eigenfunction expansion technique
Analysis of rarefied gas flow in axisymmetric jet exhausting into vacuum including Prandtl-Meyer expansion
Dynamic analysis of cylindrical shell structure by series expansion technique
Effects of thermal loading on composites with constituents of differing thermal expansion
Structural efficiency of composite tube columns with zero axial coefficient of thermal expansion, discussing three dimensional and planar fiber arrays
Transient energy transfer during expansion of plane layer of radiating gas bounded by strong shock, assuming LTE and perfect inviscid nonconducting gas
Heliocentric low thrust spacecraft trajectory analysis using two-variable asymptotic expansion method
Asymptotic expansions and energy methods applied to three dimensional aircraft maneuvers involving energy climbs and turns
Composite materials macroscopic thermoelastic properties relationships to constituents properties, discussing effective thermal expansion coefficients and specific heats
Algorithm for transfer matrix Heaviside expansion, using Krylov and Vandermonde transformations for multiple eigenvalue case
Linear distributed dynamic system simulation using infinite product expansions for transcendental terms in transfer functions
Expansion motions in inner Galaxy, discussing lower velocity absorption features, mass estimation method and model