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Results for “Application Abstraction”
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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Potential Future NASA Satellite Data and Applications for Tropical Cyclones
No abstract available
Riding the Type Wave: Evaluating New AI Techniques for Their Applicability in Earth Science
No abstract available
MODIS Land Surface Temperature: Application in Drought Monitoring
No abstract available
Additive Manufacture Development, Applications, and Lessons Learned
No abstract available
Fundamentals and Applications of Data Assimilation; What, How, and What For?
No abstract available
Vertical Structure Content of Polarimetric Radio Occultations (PRO) and Applications to Weather Modeling
No abstract provided
Opportunities for Enhanced Oceanographic Research and Applications Enabled by CIMR
No abstract provided
Robotic Space Exploration and Possible Applications of Quantum Engineering
No abstract provided
Multi-Resolution Elevation Mapping and Safe Landing Site Detection with Applications to Planetary Rotorcraft
No abstract provided
(abstract) PV Technology for Low Intensity, Low Temperature (LILT) Applications
As a result of the recent NASA emphasis on smaller, lower cost space missions, PV is now being considered for a number of missions operating at solar distances of 3 AU or greater. In the past, many of these missions would utilize an RTG (radioisotope thermoelectric generator). Historically, silicon solar cell behavior at these distances has been compromised by a number of mechanisms including shunting, nonohmic back contacts, and the 'broken knee' curve shape. The former two can usually be neglected for modern silicon cells, but the latter has not been eliminated. This problem has been identified with localized diffusion at the top contact/silicon interface which leads to structural changes at the local junction. This is believed to create a resistive metal-semiconductor-like (MSL) interface in parallel with the junction which results in the characteristic forms of the LILT (low intensity, low temperature) 'broken knee'. This paper discusses a TaSiN contact barrier that will prevent the MSL structure in the junction.
(abstract) An Assessment of Electric Propulsion Research, Development, and Application in the United States
This paper will discuss the development of Electric Propulsion technology in the U.S. from the 1960's to the present. It will summarize the various activities related to arcjets, resistojets, pulsed plasma thrustors, magneto-plasma-dynamic thrustors, ion engines, and more recently the evaluation of Hall effect thrustors of the SPT or Anode Layer type developed in Russia. Also, demonstration test flight and actual mission applications will be summarized. Finally, the future application of electric propulsion to near-term commercial communications satellites and planetary missions will be projected. This history is rich in diversity, and has involved a succession of types of thrustors, propellants, and electric power sources. With the recent use of arcjets on commercial communication satellites and the flight tests of ion engines for this application, it appears that electric propulsion is finally on the verge of wide spread application.
Abstract, Foreword, Summary Report for Workshop Proceedings: Microtechnology and Applications to Space Systems
During FY'92, the NASA Code RS System Analysis RTOP funded a study to evaluate the potential impact of emerging microtechnologies on future space missions. As part of this study, a workshop,.
Reliability Abstracts and Technical Reviews January - December 1970: R70-14805 - R70-15438 - Volume 10, Nos. 1-12
Reliability Abstracts and Technical Reviews is an abstract and critical analysis service covering published and report literature on reliability. The service is designed to provide information on theory and practice of reliability as applied to aerospace and an objective appraisal of the quality, significance, and applicability of the literature abstracted.
Toward a Systematic Approach for Selection of NASA Technology Portfolios
There is an important need for a consistent analytical foundation supporting the selection and monitoring of R&D tasks that support new system concepts that enable future NASA missions. This capability should be applicable at various degrees of abstraction, depending upon whether one is interested in formulation, development, or operations. It should also be applicable to a single project, a program comprised of a group of projects, an enterprise typically including multiple programs, and the overall agency itself. Emphasis here is on technology selection and new initiatives, but the same approach can be generalized to other applications, dealing, for example, with new system architectures, risk reduction, and task allocation among humans and machines. The purpose of this paper is to describe one such approach, which is in its early stages of implementation within NASA programs, and to discuss several illustrative examples.