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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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Satellite measurements of suprathermal electrons at conjugate sunrise, indicating photoelectron escape from production level and movement along geomagnetic lines into conjugate ionosphere
Venus carbon dioxide spectral band analysis methods, discussing spectral lines and rotational temperatures obtained
Electronic system /MIRACLE 2/ places frequency and gas flow rate of the respiratory process within a common frame of reference to render them comparable and compatible with ''real clock time.'' Numerous measurements are accomplished accurately on a strict one-minute half-minute, breath-by-breath, or other period basis.
Micrometeoroid mass, velocity, and composition from impact flash signature by spectroscopic analysis
Analysis of secondary flow effects in propeller and rotor boundary layers
Method of characteristics for calculating oblique shock wave interaction with turbulent boundary layer
Formation, growth and permeability of pressurant gases and propellant vapors through laminated bladder structures
Computer program for determining performance and system requirements of electrically propelled spacecraft missions
Determining compatible internal states of inverse automation by analysis of original automation
Design and modification of pyrolysis, gas chromatograph, double focusing mass spectrometer and addition of heated ion source for Martian life detection
Linear acceleration effects on semicircular canals in elasmobranch fishes
Permeation of high density gases and propellant vapors through laminated Teflon expulsion bladders
Three dimensional latching dynamics and loads induced during Apollo spacecraft docking, using linear stiffness or flexibility matrices for structural elasticity
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Program computes combustion delays, gas residence time, characteristic velocity, and other steady-state parameters required for solution of the characteristic equation. Equation is solved for critical values of injector pressure drops and chugging frequency.
Instrument system uses laser and optical heterodyne receiver to measure Doppler phase shifts produced on a laser beam by the deflection of the vibrating surface of a structure under test or in operation.
Device extracts average frequency of human speech and produces second, third, and fourth moments of instantaneous frequency about this average. It operates on electrical time representation of input signal, performs statistical analysis on zero-crossing of almost any signal, and does not require specialized personnel to operate it.
Analysis method utilizes graph-theoretic approach for evaluating computation cost and makes logical distinction between linear graph of a computation and linear graph of a program. It applies equally well to other processes which depend on quatitative edge nomenclature and precedence relationships between edges.