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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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Generally speaking, many photonic engineers, while working in a systems development mode, still focus on presenting the unique physical details of the optical elements, instead of using functional representation to describe the system. The purpose of this presentation is to introduce symbols that can be used to represent the functional intent of most of the phased array architecture.
The National Aeronautics and Space Administration has traditionally left the task of specifying design and test criteria to each of the several NASA Centers. Faced with the wide variety fo resulting criteria used for resolving similar or identical problems, the NASA Office of Chief Engineer initiated a program to develop consistent NASA-wide standards if the various NASA Centers could agree to a set of common requirements.
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The Galileo spacecraft is currently on its way to Jupiter and its moons. In April 1991, the high gain antenna (HGA) failed to deploy as commanded.
The manned and robotic return to the moon envisioned in America's Space Exploration Initiative requires robust and reliable communications.
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The Keck Interferometer is being developed by JPL and CARA as one of the ground-based components of NASA's Origins Program.
A radio interferometer array in space providing high dynamic range images with unprecedented angular resolution over the broad frequency range from 0.030 - 30 MHz will open new vistas in solar, terrestial, galactic, and extragalactic astrophysics.
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Radiometric models have been used to optimize instrument design or evaluate impacts of changes to the design during integration and test.
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High resolution thermal surveys will be acquired to quantify the thermal balance of several active, changing volcanoes which are difficult to monitor for change. Maps of the heat flow on these volcanoes will help in understanding the internal processes changing their surfaces. Correlation of heat flow with volcano deformation and seismicity will help in the understanding of this active region. Remote sensing of composition and biology of warm, bare areas will allow a better understanding of these extreme ecosystems. The thermal survey s and ancillary compositional and biological mapping will be used to focus searches on Mars for similar environments.Mars is a polar desert, much like Antarctica, and one of the few places on Mars where life could exist is in a thermal anomaly like the bare, warm ground areas on the Antarctic volcanoes. We will study the factors making these areas habitable and hone the remote sensing techniques that may be used to detect these features on Mars. Warm areas on Mars (as on the Antarctic volcanoes) are especially hospitable to humans as well, making their discovery on Mars of primary importance for human occupation.
This viewgraph presentation reviews a possible mechanism and benefits of SpaceWire redundancy.