A real-time digital spectrum analyzer
Algorithm for digital spectral analysis in real time
SEARCH · Engineering Papers
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Algorithm for digital spectral analysis in real time
Integral inversion of Mariner 4 occultation data for Mars atmosphere analysis
Low pass filter, bandpass filter, and design of input system for speech recognition computer
Design criteria and mathematical model for vapor diffusion water reclamation unit
Surface integration analysis of radiation pattern of parallel plate waveguide
Computer program determining gain distribution of uncertainty region from antenna pattern data
Computerized method of analysis predicts bearing loads, shaft deflections, and critical speeds for shafts coupled by rolling contact bearings to the machine housing. The bearing nonlinearities, casing as well as rotor dynamics, and rotor-imbalance forcing functions are all included in the system dynamics analysis.
Study establishes design criteria for constructing high temperature thermocouple to measure nuclear fuel pin temperature. The study included a literature search to determine the compatibility of material useful for thermocouples, a hot zone error analysis, and a prototype design for hot junction and connector pin connections.
Dewpoint temperature inversion, with regard to other simultaneous meteorological conditions, was examined to establish the influence of meteorological variables on the variation of dewpoint temperature with height. This report covers instrumentation and available data, all the climatological features of dewpoint inversions, and specific special cases.
Computer program solves transient or steady-state heat flow problems through the concept of lumped parameters expressed as the electrical analog of the heat transfer problem using finite differences techniques.
Feedback-controlled pulse-amplitude integrator and amplifier is used as an analog-to-digital converter that converts event-liberated charges, emanating from a nuclear-particle detector, directly to numbers rather than to analog-dependent voltages.
Computer program uses numerical methods to provide accurate heat transfer solutions to a wide variety of heat flow problems. This highly versatile program will solve steady state and transient problems in almost any situation that can be presented by a resistance-capacitance network.
FORTRAN computer program for solution of thermal analog models by Univac 1108 computer
Joyce-Loebl microdensitometer-isodensitracer for infrared film density analysis
Study of mammalian blood to determine glucose levels and the effects of polycythemia and hyperoxia
Aerodynamic stability of helicopter rotor in forward flight
Satellite measurements of suprathermal electrons at conjugate sunrise, indicating photoelectron escape from production level and movement along geomagnetic lines into conjugate ionosphere