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Spacecraft Power Beaming And Solar Cell Annealing Using High Energy Lasers
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Book Synopsis Spacecraft Power Beaming and Solar Cell Annealing Using High-energy Lasers by : Richard C. Luce
Download or read book Spacecraft Power Beaming and Solar Cell Annealing Using High-energy Lasers written by Richard C. Luce and published by . This book was released on 2002 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite lifetime is often limited by degradation of the electrical power subsystem--radiation-damaged solar arrays and failed batteries. Being able to beam power from terrestrial sites could alleviate this limitation, extending the lifetime of billions of dollars of satellite assets, as well as providing additional energy for electric propulsion that can be used for stationkeeping and orbital changes. In addition, laboratory research at the Naval Postgraduate School (NPS) has shown the potential to anneal damaged solar cells using lasers. This thesis decribes that research, preliminary work performed lasing a representative solar panel array, and a proposed Maui experiment to demonstrate the relevant concepts by lasing PANSAT, an NPS-built and operated spacecraft. The preliminary work done at Maui involved lasing a PANSAT silicon photovoltaic array using a 975 nm Yb:YAG source at output power levels of 7 W, 14 W and 21 W. These results matched those obtained under near-AM0 conditions atop Mount Haleakala (for the 7 W case) and extrapolated to match predicted output levels. Enough data points were collected at each power level to generate an I-V curve for the panel, identifying the open circuit voltage, short circuit current, and maximum power points. The efficiency of the panel varied from 13.1% (as expected for monochromatic light) at 7 W to 11.3% at 21 W due to uniform heating of the cells. These results represent a "ground truth" baseline from which further research can continue.
Book Synopsis Spacecraft Power Beaming and Solar Cell Annealing Using High-Energy Lasers by :
Download or read book Spacecraft Power Beaming and Solar Cell Annealing Using High-Energy Lasers written by and published by . This book was released on 2002 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite lifetime is often limited by degradation of the electrical power subsystem--radiation-damaged solar arrays and failed batteries, Being able to beam power from terrestrial sites could alleviate this limitation, extending the lifetime of billions of dollars of satellite assets, as well as providing additional energy for electric propulsion that can be used for stationkeeping and orbital changes In addition, laboratory research at the Naval Postgraduate School (NPS) has shown the potential to anneal damaged solar cells using lasers, This thesis describes that research, preliminary work performed lasing a representative solar panel array, and a proposed on-orbit experiment to demonstrate the relevant concepts by lasing PAN SAT, an NPS-built and operated spacecraft, The preliminary work done at Maui involved lasing a PAN SAT silicon photovoltaic array using a 975 nm% Yb:YAG source at output power levels of 7 W, 14 W and 21 W, These results matched those obtained under near-AMO conditions atop Mount Haleakala (for the 7 W case) and extrapolated to match predicted output levels, Enough data points were collected at each power level to generate an I-V curve for the panel, identifying the open circuit voltage, short circuit current, and maximum power points, The efficiency of the panel varied from 13,1% (as expected for monochromatic light) at 7 W to 11,3% at 21 W due to uniform heating of the cells, These results represent a "ground truth" baseline from which further research can continue,
Book Synopsis Spacecraft Power Beaming and Solar Cell Annealing Using High-energy Lasers by : Richard C. Luce
Download or read book Spacecraft Power Beaming and Solar Cell Annealing Using High-energy Lasers written by Richard C. Luce and published by . This book was released on 2002 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite lifetime is often limited by degradation of the electrical power subsystem--radiation-damaged solar arrays and failed batteries. Being able to beam power from terrestrial sites could alleviate this limitation, extending the lifetime of billions of dollars of satellite assets, as well as providing additional energy for electric propulsion that can be used for stationkeeping and orbital changes. In addition, laboratory research at the Naval Postgraduate School (NPS) has shown the potential to anneal damaged solar cells using lasers. This thesis decribes that research, preliminary work performed lasing a representative solar panel array, and a proposed Maui experiment to demonstrate the relevant concepts by lasing PANSAT, an NPS-built and operated spacecraft. The preliminary work done at Maui involved lasing a PANSAT silicon photovoltaic array using a 975 nm Yb:YAG source at output power levels of 7 W, 14 W and 21 W. These results matched those obtained under near-AM0 conditions atop Mount Haleakala (for the 7 W case) and extrapolated to match predicted output levels. Enough data points were collected at each power level to generate an I-V curve for the panel, identifying the open circuit voltage, short circuit current, and maximum power points. The efficiency of the panel varied from 13.1% (as expected for monochromatic light) at 7 W to 11.3% at 21 W due to uniform heating of the cells. These results represent a "ground truth" baseline from which further research can continue.
Book Synopsis Ground-Based High Energy Power Beaming in Support of Spacecraft Power Requirements by :
Download or read book Ground-Based High Energy Power Beaming in Support of Spacecraft Power Requirements written by and published by . This book was released on 2006 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the feasibility of projecting ground-based laser power to energize a spacecraft electrical bus via the solar panels. The energy is projected through a telescope, using modern optical compensation systems, at controlled wavelengths. Research conducted on high-energy lasers has matured to the point today, that the bulk of the power required by spacecraft on orbit can be projected from the surface of the earth. With battery life being the greatest limitation on spacecraft life span, the ability to provide electrical power from the surface to a satellite in eclipse with degraded batteries could mean multi-billion dollar cost savings by extending the lifetime of current and future satellites.
Book Synopsis Beamed Energy Propulsion by : Andrew V. Pakhomov
Download or read book Beamed Energy Propulsion written by Andrew V. Pakhomov and published by American Institute of Physics. This book was released on 2003-05-22 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the First International Symposium on Beamed Energy Propulsion, as the first conference of this kind, demonstrated that beamed energy propulsion is an established worldwide field of research and engineering, and an extremely active field of new technology. Four countries have already launched their lightcrafts, and the day when they will reach space is looming in the near future. A major demonstration of microwave propulsion in space will be conducted this year. Laser-based microthrusters are becoming off-the-shelf technology. Microairplanes and dirigibles are now riding on laser beams. Even planetary defense systems left sci-fi thrillers to become a matter of feasibility discussion. Topics include: Fluid Dynamics in Laser Propulsion; Ablative Laser Propulsion and Microthrusters; Microwave Propulsion; Microwave Sails; Beamed Energy for Interstellar Missions; Hybrid Systems and New Concepts; Miscellaneous Applications; Beam-Propelled Microaircraft; Beam Generation, Propagation, and Reception; Beamed Energy Propulsion; System Analysis; and High-Power BEP User Testing Facilities.
Download or read book Beamed Energy Propulsion written by and published by . This book was released on 2002 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Annealing of Ion Implanted CZ Silicon for Solar Cell Junction Formation by : J. S. Katzeff
Download or read book Laser Annealing of Ion Implanted CZ Silicon for Solar Cell Junction Formation written by J. S. Katzeff and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Power Satellites written by and published by . This book was released on 1981 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722334758 Total Pages :32 pages Book Rating :4.3/5 (347 download)
Book Synopsis Laser Annealing of Amorphous/Poly by : National Aeronautics and Space Administration (NASA)
Download or read book Laser Annealing of Amorphous/Poly written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-05 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The preliminary design proposed for the microelectronics materials processing equipment is presented. An overall mission profile, description of all processing steps, analysis methods and measurement techniques, data acquisition and storage, and a preview of the experimental hardware are included. The goal of the project is to investigate the viability of material processing of semiconductor microelectronics materials in a micro-gravity environment. The two key processes are examined: (1) Rapid Thermal Annealing (RTA) of semiconductor thin films and damaged solar cells, and (2) thin film deposition using a filament evaporator. The RTA process will be used to obtain higher quality crystalline properties from amorphous/poly-silicon films. RTA methods can also be used to repair radiation-damaged solar cells. On earth this technique is commonly used to anneal semiconductor films after ion-implantation. The damage to the crystal lattice is similar to the defects found in solar cells which have been exposed to high-energy particle bombardment. Cole, Eric E. Unspecified Center NAG5-1294...
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch Publisher : ISBN 13 : Total Pages :1080 pages Book Rating :4.E/5 ( download)
Book Synopsis Japanese Science and Technology, 1983-1984 by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Download or read book Japanese Science and Technology, 1983-1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and published by . This book was released on 1985 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology for Large Space Systems by :
Download or read book Technology for Large Space Systems written by and published by . This book was released on 1983 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy: a Continuing Bibliography with Indexes by :
Download or read book Energy: a Continuing Bibliography with Indexes written by and published by . This book was released on 1982 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Second Beamed Space-Power Workshop by : R. J. De Young
Download or read book Second Beamed Space-Power Workshop written by R. J. De Young and published by . This book was released on 1989 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Conference Record of the Thirteenth IEEE Photovoltaic Specialists Conference--1978 by :
Download or read book The Conference Record of the Thirteenth IEEE Photovoltaic Specialists Conference--1978 written by and published by . This book was released on 1978 with total page 1448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy written by and published by . This book was released on 1983 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photovoltaic Generators in Space by : T. D. Guyenne
Download or read book Photovoltaic Generators in Space written by T. D. Guyenne and published by . This book was released on 1978 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
