The feasibility of a direct relay of Apollo spacecraft data via a communication satellite
Feasibility of direct relay of Apollo spacecraft data via communications satellite
APOLLO SPACECRAFT↗
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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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Design of piecewise-linear switching functions for relay control systems.
Piecewise linear switching functions design for suboptimal regulation of linear plants with relay controller in regard to transient response performance criterion
TRANSIENT RESPONSE↗
Improved relay optical element for spectroradiometer using cryogenically cooled detector
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.
Kraemer, A. R.↗
System measures arc energy dissipated in relay contact cycling
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.
Source record↗
Lunar module relay experiment tracking accuracy study Final report
Lunar module tracking experiment using synchronous relay network
Source record↗
Retrodirective antennas and the multipath problems associated with their use on the proposed orbiting data relay network
Retrodirective antennas and multipath transmission problems associated with use on proposed orbiting data relay network
Seal, P. M.↗
Relay control of multi-output systems with parameter uncertainties
Semidefinite Liapunov function applied to relay control of linear system with parameter uncertainties
Lindorff, D. P.↗
Relay actuator produces one-hour pulses.
Relay actuator to produce long pulses for slow repetition timing
Pippen, D. L.↗
Feasibility of a data relay satellite system.
Direct communication relay between orbiting spacecraft and ground stations based on network of synchronous altitude satellites
Whelan, C. R.↗
Communications system for the proposed orbiting data relay network.
Orbiting Data Relay Network communications system provides continuous wideband communication between ground and earth orbiting spacecraft via synchronous satellite repeaters
Durrani, S. H.↗
Synchronous communication relay satellites for manned space flight in earth orbit.
Communication and tracking relay system for manned spacecraft in orbit using synchronous altitude satellites
Hamilton, M.↗
An analysis of the telecommunication performance of a data-relay satellite system.
Data relay satellite system to provide communication capability between earth orbiting space vehicles and Mission Control Center
Arndt, G. D.↗
Radio relay system performance in an interference environment
Radio frequency interference and performance of terrestrial and satellite radio relay systems
Reinhart, E. E.↗
Communications and tracking relay experiment study program Final report
Communications and tracking relay experiment
Mosher, B.↗
Solar effects on VHF communications between a synchronous satellite relay and earth ground stations
Solar flare and sunspot effects on VHF communications between synchronous satellite relay and ground stations
Greaves, J. R.↗
Study of a low altitude satellite utilizing a data relay satellite system, phase 1 Final report
Analysis and trade studies of low altitude satellite using data relay satellite system
Eggert, D. J.↗
Analysis of the perturbations in the angular orbital elements for the satellite Relay 2
Perturbation analysis for angular orbital elements of Relay 2 satellite
Laczo, V. T.↗
A multiple-access satellite relay system for low data rate users
Multiple access satellite relay system for low data rate users
Gilchriest, C. E.↗