Abstract
The impending development of NASA's Crew Exploration Vehicle (CEV) will require a new entry guidance algorithm that provides sufficient performance to meet all requirements. This study examined the effects on entry footprints of enhancing the skip trajectory entry guidance used in the Apollo program. The skip trajectory entry guidance was modified to include a numerical predictor-corrector phase during atmospheric skip portion of the entry trajectory. Four degree-of-freedom simulation was used to determine the footprint of the entry vehicle for the baseline Apollo entry guidance and predictor-corrector enhanced guidance with both high and low lofting at several lunar return entry conditions. The results show that the predictor-corrector guidance modification significantly improves the entry footprint of the CEV for the lunar return mission. The performance provided by the enhanced algorithm is likely to meet the entry range requirements for the CEV.
| Original language | English (US) |
|---|---|
| Title of host publication | Collection of Technical Papers - Space 2006 Conference |
| Pages | 2230-2244 |
| Number of pages | 15 |
| State | Published - Dec 1 2006 |
| Externally published | Yes |
| Event | Space 2006 Conference - San Jose, CA, United States Duration: Sep 19 2006 → Sep 21 2006 |
Publication series
| Name | Collection of Technical Papers - Space 2006 Conference |
|---|---|
| Volume | 3 |
Other
| Other | Space 2006 Conference |
|---|---|
| Country | United States |
| City | San Jose, CA |
| Period | 9/19/06 → 9/21/06 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Improving lunar return entry footprints using enhanced skip trajectory guidance. / Putnam, Z. R.; Braun, R. D.; Bairstow, S. H.; Barton, G. H.
Collection of Technical Papers - Space 2006 Conference. 2006. p. 2230-2244 (Collection of Technical Papers - Space 2006 Conference; Vol. 3).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Improving lunar return entry footprints using enhanced skip trajectory guidance
AU - Putnam, Z. R.
AU - Braun, R. D.
AU - Bairstow, S. H.
AU - Barton, G. H.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - The impending development of NASA's Crew Exploration Vehicle (CEV) will require a new entry guidance algorithm that provides sufficient performance to meet all requirements. This study examined the effects on entry footprints of enhancing the skip trajectory entry guidance used in the Apollo program. The skip trajectory entry guidance was modified to include a numerical predictor-corrector phase during atmospheric skip portion of the entry trajectory. Four degree-of-freedom simulation was used to determine the footprint of the entry vehicle for the baseline Apollo entry guidance and predictor-corrector enhanced guidance with both high and low lofting at several lunar return entry conditions. The results show that the predictor-corrector guidance modification significantly improves the entry footprint of the CEV for the lunar return mission. The performance provided by the enhanced algorithm is likely to meet the entry range requirements for the CEV.
AB - The impending development of NASA's Crew Exploration Vehicle (CEV) will require a new entry guidance algorithm that provides sufficient performance to meet all requirements. This study examined the effects on entry footprints of enhancing the skip trajectory entry guidance used in the Apollo program. The skip trajectory entry guidance was modified to include a numerical predictor-corrector phase during atmospheric skip portion of the entry trajectory. Four degree-of-freedom simulation was used to determine the footprint of the entry vehicle for the baseline Apollo entry guidance and predictor-corrector enhanced guidance with both high and low lofting at several lunar return entry conditions. The results show that the predictor-corrector guidance modification significantly improves the entry footprint of the CEV for the lunar return mission. The performance provided by the enhanced algorithm is likely to meet the entry range requirements for the CEV.
UR - http://www.scopus.com/inward/record.url?scp=33846530159&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846530159&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33846530159
SN - 1563478242
SN - 9781563478246
T3 - Collection of Technical Papers - Space 2006 Conference
SP - 2230
EP - 2244
BT - Collection of Technical Papers - Space 2006 Conference
ER -