Lunar South Pole Illumination: Review, Reassessment, and Power System Implications
This paper reviews past analyses and research related to lunar south pole illumination and presents results of independent illumination analyses using an analytical tool and a radar digital elevation model. The analysis tool enables assessment at most locations near the lunar poles for any time and...
Main Author: | |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
2007
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/20070034951 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:20070034951 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:20070034951 2023-05-15T18:21:53+02:00 Lunar South Pole Illumination: Review, Reassessment, and Power System Implications Fincannon, James Unclassified, Unlimited, Publicly available November 2007 application/pdf http://hdl.handle.net/2060/20070034951 unknown Document ID: 20070034951 http://hdl.handle.net/2060/20070034951 No Copyright CASI Lunar and Planetary Science and Exploration NASA/TM-2007-215025 AIAA Paper-2007-4700 E-16219 Fifth International Energy Conversion Engineering Conference and Exhibit (IECEC); 25-28 Jun. 2007; St. Louis, MO; United States 2007 ftnasantrs 2019-07-21T01:35:31Z This paper reviews past analyses and research related to lunar south pole illumination and presents results of independent illumination analyses using an analytical tool and a radar digital elevation model. The analysis tool enables assessment at most locations near the lunar poles for any time and any year. Average illumination fraction, energy storage duration, solar/horizon terrain elevation profiles and illumination fraction profiles are presented for various highly illuminated sites which have been identified for manned or unmanned operations. The format of the data can be used by power system designers to develop mass optimized solar and energy storage systems. Data are presented for the worse case lunar day (a critical power planning bottleneck) as well as three lunar days during lunar south pole winter. The main site under consideration by present lunar mission planners (on the Crater Shackleton rim) is shown to have, for the worse case lunar day, a 0.71 average illumination fraction and 73 to 117 hours required for energy storage (depending on power system type). Linking other sites and including towers at either site are shown to not completely eliminate the need for energy storage. Other/Unknown Material South pole NASA Technical Reports Server (NTRS) Shackleton South Pole |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Lunar and Planetary Science and Exploration |
spellingShingle |
Lunar and Planetary Science and Exploration Fincannon, James Lunar South Pole Illumination: Review, Reassessment, and Power System Implications |
topic_facet |
Lunar and Planetary Science and Exploration |
description |
This paper reviews past analyses and research related to lunar south pole illumination and presents results of independent illumination analyses using an analytical tool and a radar digital elevation model. The analysis tool enables assessment at most locations near the lunar poles for any time and any year. Average illumination fraction, energy storage duration, solar/horizon terrain elevation profiles and illumination fraction profiles are presented for various highly illuminated sites which have been identified for manned or unmanned operations. The format of the data can be used by power system designers to develop mass optimized solar and energy storage systems. Data are presented for the worse case lunar day (a critical power planning bottleneck) as well as three lunar days during lunar south pole winter. The main site under consideration by present lunar mission planners (on the Crater Shackleton rim) is shown to have, for the worse case lunar day, a 0.71 average illumination fraction and 73 to 117 hours required for energy storage (depending on power system type). Linking other sites and including towers at either site are shown to not completely eliminate the need for energy storage. |
format |
Other/Unknown Material |
author |
Fincannon, James |
author_facet |
Fincannon, James |
author_sort |
Fincannon, James |
title |
Lunar South Pole Illumination: Review, Reassessment, and Power System Implications |
title_short |
Lunar South Pole Illumination: Review, Reassessment, and Power System Implications |
title_full |
Lunar South Pole Illumination: Review, Reassessment, and Power System Implications |
title_fullStr |
Lunar South Pole Illumination: Review, Reassessment, and Power System Implications |
title_full_unstemmed |
Lunar South Pole Illumination: Review, Reassessment, and Power System Implications |
title_sort |
lunar south pole illumination: review, reassessment, and power system implications |
publishDate |
2007 |
url |
http://hdl.handle.net/2060/20070034951 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Shackleton South Pole |
geographic_facet |
Shackleton South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
CASI |
op_relation |
Document ID: 20070034951 http://hdl.handle.net/2060/20070034951 |
op_rights |
No Copyright |
_version_ |
1766201211339407360 |