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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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Automatic frequency control circuit is designed for use with voltage-controlled variable-frequency oscillators. The output frequency of the circuit is determined by a crystal oscillator.
Hoist uses six equally spaced support points with the load equalized between pairs to prevent over-stressing of any one point of support. The pickup point is automatically shifted through a motor driven feedback system to level the load throughout the lifting period.
System provides rapid command sync acquisition between widely separated transmitter-receivers. It is based on a rapid, automatic range-adjustment approach rather than the time-consuming cycle slipping or stepping techniques of conventional phase-locked loops.
In-line, pilot-operated, differential area, poppet type valve provides both automatic relief of a tank at a precise over-pressure and remote control of tank venting. Relief and vent operations are separate functions incorporated in an integral valve package.
Automatic correction for dead time losses in nuclear counting experiments is implemented by a simple live timer arrangement in which each counting interval is extended for compensation for the dead time during that interval. this method eliminates repetitious manual calculations, source of error, and dependence upon paralysis shifts.
Automatic checkout and control of launch vehicles during prelaunch phase, and utilization of techniques in electric power industry
Specifications, sensitivity, intentional nonlinearities, and unavailable states concerned with state variable feedback in automatic control systems
Automatic analysis for determining invariant patterns of spoken words in machine coded speech
Automatic polarimeter for application to lunar and planetary missions
Automatic stations descent in planetary atmospheres as means of measurement data control
Statistical method for automatic computer editing of biological data
Evaluation of digital computer for V/STOL aircraft automatic approach and landing system
Automatic approach and landing system for V/STOL aircraft
Cybernetic feedback connections for automatic model of respiratory control
Procurement and construction of automatic picture transmission ground station equipment for ESSA and Nimbus transmission
Improved automatic landing systems for aircraft by applying control theory and inertial navigation data
Automatic data processing system for pulse code modulation and pulse position modulation telemetry of sounding rockets