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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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Phase locked-loop circuit is used for playback motors in digital tape recorders where the reproducer output remains in exact synchronism with an external reference clock over extended periods. It removes the motor dynamics from the control loop so that the loop is stable without damping.
Fatigue life tests of polyester film tape recorder belts
Electrocardiography of male subjects during vibration - magnetic tape recorded data averaged by digital computer program
Five computer programs for analyzing magnetic tape recordings of digital data from microphotometer
Root mean square time delay error with respect to playback time and autocorrelation function of tape recorded sine wave for studying jitter spectra
Variable time lapse videoscintiscope in medical applications, discussing implementation of TV camera, signal tape recording and audio activation
Technical problem solving model based on tape recorded protocols of engineers engaged in R and D project
Telemetry package uses three separate FM/AM transmitters, one for each axis of measurement. Three AM receivers and a tape recorder are used for receiving, demodulating, and recording the acceleration signal.
Jupiter decametric radio bursts observed by tape recording fringe interferometer
Technique generates special effects for broadcast television to study effects of light feedback on television systems. Signals are produced for tape recording, broadcasting, or displaying on black-and-white or color monitors. The patterns have from three to eight sides and expand, contract, or rotate at various speeds.
High data rate storage system B tape transport fits to existing hysteresis motor thus reducing flutter, lowering assembly cost, simplifying assembly process and increasing reliability. Motor may be used on any tape recorder or similar device having two speed ratio of up to 32 to 1.
Applying nonadaptive transversal filters to playback of digital tape recorder signals and complementary-symmetry MOSFET memory for outer planet spacecraft
Investigating spacecraft magnetic recording tapes and magnetic heads, sterilizable battery separators, and structural performance of solid propellant motor
Digital telemetry system apparatus to reduce tape recorder wow and flutter noise during playback
Data acquisition and processing system with buffer storage and timing device for magnetic tape recording of PCM data and timing information
Closed loop servosystem for variable speed tape recorders on board spacecraft
Magnetic head/tape interface problems of satellite data storage tape recording systems, and minimizing stick-slip phenomena
Shadow band observations during 7 March 1970 solar eclipse, determining spectral energy distribution from magnetic tape recordings of collimated photocells output