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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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Space program research projects on systems analysis and engineering, telecommunications, guidance and control, propulsion, and data systems
First generation survivable lander for 1973 Venus launch opportunity, discussing capsule and telecommunications design
Telecommunication system for lunar, planetary and deep space flight mission control and data acquisition
Research and advanced development projects on systems analysis, spacecraft guidance and control, electronic packaging, propulsion, and telecommunications
Research project reports on advanced systems analysis and engineering, telecommunication, solid propellants, guidance and control, and data systems
Spacecraft propulsion, biological environment, guidance and control, electronic components, power supplies, propellants, instrumentation, telecommunication, and mission planning
Mutual RF interference between satellite and terrestrial telecommunications microwave relay system at shared frequencies
RF spectrum analysis technique for DSIF telecommunications compatibility testing
Coding, synchronization, combinatorial, multiple access, propagation, and permutation studies for telecommunications systems
Research and development work in space sciences, telecommunications, guidance and control, engineering mechanics, astrionics, propulsion, and mission analysis
Science, navigation and trajectory, mechanical subsystems, and telecommunications design trade studies for Jupiter atmospheric entry mission planning
Deep Space Network telecommunication and ground support equipment for planetary and interplanetary flight projects
Scintillation, polarization, and multipath effects on VHF propagation between synchronous satellites and aircraft - telecommunication systems
Summary report including studies on computer programs, management systems, materials, orbits and trajectories, photography, power sources, propulsion, and telecommunication for space missions
The design, development and testing of the infrared interferometer spectrometer is reported with emphasis on the unique features of the Mariner instrument as compared to previous IRIS instruments flown on the Nimbus meteorological research satellites. The interferometer functions in the spectral range from 50 microns to 6.3 microns. A noise equivalent radiance of 0.5 X 10 to the -7th power W/sq cm/ster/cm has been achieved. Major improvements that were implemented included the cesium iodide beamsplitter and electronic features to suppress the effect of vibration on the Michelson mirror motion and digital filtering through the summation of increased sampling of the infrared signal. A bit error detection and correction scheme was also implemented in order to recover the science data with a higher level of confidence over the telecommunication link.
The Satellite Telecommunications Analysis and Modeling Program (STAMP) provides the user with a flexible and comprehensive tool for the analysis of ITS system requirements. While obtaining minimum cost design points, the program enables the user to perform studies over a wide range of user requirements and parametric demands. The program utilizes a total system approach wherein the ground uplink and downlink, the spacecraft, and the launch vehicle are simultaneously synthesized. A steepest descent algorithm is employed to determine the minimum total system cost design subject to the fixed user requirements and imposed constraints. In the process of converging to the solution, the pertinent subsystem tradeoffs are resolved. This report documents STAMP through a technical analysis and a description of the principal techniques employed in the program.
A paper describing the basic delta modulation systems studied was published. A second paper, describing the systems response to voice and video was presented at the International Communications Conference in June 1972, and a third paper describing several delta modulation systems used for voice and video is scheduled for presentation at the National Telecommunications Conference in December 1972.
The environment, science investigations, and general mission analysis considerations are given first. These data are followed by discussions of the studies pertaining to the planets Jupiter, Saturn, Uranus, and Neptune. Except for Neptune, each planet discussion is divided into two parts: (1) parametric activities and (2) probe definition for that planet, or the application of a given probe for that planet. The Neptune discussion is limited to parametrics in the area of science and mission analysis. Each of the probe system definitions consists of system and subsystem details including telecommunications, data handling, power pyrotechnics, attitude control, structures, propulsion, thermal control, and probe to spacecraft integration. The first configuration is discussed in detail and the subsequent configuration discussions are limited to the differences. Finally, the hardware availability to support a probe system and commonality of science, missions, and subsystems for use at the various planets are considered.