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Matching Records: 39
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The Fermi paradox: An approach based on percolation theory
Document ID: 19940022867
NTRS Full-Text: Click to View  [PDF Size: 418 KB]
Author: Landis, Geoffrey A.
Abstract: If even a very small fraction of the hundred billion stars in the galaxy are home to technological hide
Publication Year: 1993
Document Type: Conference Paper
Date Acquired: Dec 28, 1995
Optoelectronic and photovoltaic devices with low-reflectance surfaces
Document ID: 20080005943
NTRS Full-Text: Click to View  [PDF Size: 613 KB]
Author: Landis, Geoffrey A. (Inventor); Jenkins, Phillip P. (Inventor)
Abstract: Low angle V-grooves are provided in the target surfaces of optoelectronic or photovoltaic devices hide
Publication Year: 1993
Document Type: Patent
Report/Patent Number: US-PATENT-5,261,970, US-PATENT-APPL-SN-865072
Date Acquired: Jan 24, 2008
Lattice-mismatched In(0.40)Al(0.60)As window layers for indium phosphide solar cells
Document ID: 19940012640
NTRS Full-Text: Click to View  [PDF Size: 525 KB]
Author: Jain, Raj K.; Landis, Geoffrey A.; Wilt, David M.; Flood, Dennis J.
Abstract: The efficiency of indium phosphide (InP) solar cells is limited by its high surface recombination hide
Publication Year: 1993
Document Type: Conference Paper
Report/Patent Number: NASA-TM-106255, E-7879, NAS 1.15:106255
Date Acquired: Dec 28, 1995
Space transfer with ground-based laser/electric propulsion
Document ID: 19930011426
NTRS Full-Text: Click to View  [PDF Size: 9.3 MB]
Author: Landis, Geoffrey A.; Stavnes, Mark; Oleson, Steve; Bozek, John
Abstract: A new method of providing power to space vehicles consists of using ground-based lasers to beam hide
Publication Year: 1993
Document Type: Conference Paper
Report/Patent Number: NASA-TM-106060, E-7663, NAS 1.15:106060, AIAA PAPER 92-3213
Date Acquired: Dec 28, 1995
Approaches to solar cell design for pulsed laser power receivers
Document ID: 19940006925
NTRS Full-Text: Click to View  [PDF Size: 656 KB]
Author: Jain, Raj K.; Landis, Geoffrey A.
Abstract: Using a laser to beam power from Earth to a photovoltaic receiver in space could be a technology hide
Publication Year: 1993
Document Type: Conference Paper
Date Acquired: Dec 28, 1995
Surface passivation of InP solar cells with InAlAs layers
Document ID: 19940006917
NTRS Full-Text: Click to View  [PDF Size: 404 KB]
Author: Jain, Raj K.; Flood, Dennis J.; Landis, Geoffrey A.
Abstract: The efficiency of indium phosphide solar cells is limited by high values of surface recombination. hide
Publication Year: 1993
Document Type: Conference Paper
Date Acquired: Dec 28, 1995
Workshop summary: Receivers for laser power beaming
Document ID: 19940006947
NTRS Full-Text: Click to View  [PDF Size: 268 KB]
Author: Landis, Geoffrey A.
Abstract: At the Space Photovoltaics Research and Technology (SPRAT) conference at NASA Lewis Research Center, hide
Publication Year: 1993
Document Type: Conference Paper
Date Acquired: Dec 28, 1995
Photovoltaic receivers for laser beamed power in space
Document ID: 19930037667
Author: Landis, Geoffrey A.
Abstract: No Abstract Available
Publication Year: 1993
Document Type: Journal Article
Date Acquired: Dec 28, 1995
Comparisons of selected laser beam power missions to conventionally powered missions
Document ID: 19940012049
NTRS Full-Text: Click to View  [PDF Size: 10.5 MB]
Author: Bozek, John M.; Oleson, Steven R.; Landis, Geoffrey A.; Stavnes, Mark W.
Abstract: Earth-based laser sites beaming laser power to space assets have shown benefits over competing power hide
Publication Year: 1993
Document Type: Conference Paper
Report/Patent Number: NASA-TM-106110, E-7760, NAS 1.15:106110
Date Acquired: Dec 28, 1995
Effect of inert propellant injection on Mars ascent vehicle performance
Document ID: 19930002964
NTRS Full-Text: Click to View  [PDF Size: 1.0 MB]
Author: Colvin, James E.; Landis, Geoffrey A.
Abstract: A Mars ascent vehicle is limited in performance by the propellant which can be brought from Earth. hide
Publication Year: 1992
Document Type: Conference Paper
Report/Patent Number: NASA-CR-189238, E-7312, NAS 1.26:189238, AIAA PAPER 92-3447
Date Acquired: Dec 28, 1995
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