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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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Stability boundary approximations for relay- control systems via steepest-ascent construction of Liapunov functions
Sawtooth-modulated TWT circuit acting as frequency converter and amplifier in microwave relay system
Hand carried, solid state, 18-channel detector system constantly monitors contact conditions in relays. The system is relatively insensitive to external noise and is powered by standard 110 volt ac.
Failure analyses of relay contacts, and recommendations for improved reliability
Reliability of platinum-iridium relay contacts as function of load current
Compensated pulse-data relay servomechanism for use with feedback control system and digital data processing
Direct and relay link communication from Martian surface station
Optimum design of piecewise-linear switching functions for linear, constant, lumped systems with single ideal relay controller
Feasibility of direct relay of Apollo spacecraft data via communication satellite
Feasibility of direct relay of Apollo spacecraft data via communications satellite
Piecewise linear switching functions design for suboptimal regulation of linear plants with relay controller in regard to transient response performance criterion
By coating half of one element in the relay optical system of a spectroradiometer with a very high emissivity paint, the effect of the reflected radiation from the back of the filter wheel is eliminated optically. This causes the detector to view a constant level of radiation, regardless of how the reflectivity of the back of the filter wheel changes.
System, containing cycle timer, measures the energy dissipated at the contacts of a relay operating in an electric circuit. The system measures as well as records the energy for a large number of repetitive operations.
Lunar module tracking experiment using synchronous relay network
Retrodirective antennas and multipath transmission problems associated with use on proposed orbiting data relay network
Semidefinite Liapunov function applied to relay control of linear system with parameter uncertainties
Relay actuator to produce long pulses for slow repetition timing
Direct communication relay between orbiting spacecraft and ground stations based on network of synchronous altitude satellites