Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Duane Roth"'
Publikováno v:
Space Operations: Inspiring Humankind's Future ISBN: 9783030115357
Cassini launched in 1997 and completed its prime mission, its Equinox first extended mission, and its Solstice second extended mission. Since its arrival at Saturn in 2004, Cassini completed almost 300 orbits around the planet. Over the span of the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2145d463c2229e16042d460b7986efb
https://doi.org/10.1007/978-3-030-11536-4_22
https://doi.org/10.1007/978-3-030-11536-4_22
Publikováno v:
2018 SpaceOps Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b7d58c7af511366a075cd42961951c7
https://doi.org/10.2514/6.2018-2646
https://doi.org/10.2514/6.2018-2646
Publikováno v:
2015 IEEE Aerospace Conference.
The Cassini spacecraft is in its final years. On September 15, 2017, Cassini will plunge deep into Saturn's atmosphere never to reemerge; thus concluding its second extended mission and 13 years in orbit around the ringed planet. As of October 2014,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ba415758b576a7d21016a2810eada0
https://doi.org/10.1109/aero.2015.7119015
https://doi.org/10.1109/aero.2015.7119015
Autor:
M. C. Meek, F. J. Pelletier, D. W. Parcher, I. M. Roundhill, R. A. Mackenzie, K. E. Criddle, J. R. Stauch, J. B. Jones, Rodica Ionasescu, William M. Owen, Duane Roth, Peter G. Antreasian, J. J. Bordi, Robert A. Jacobson
Publikováno v:
The Astronomical Journal. 132:2520-2526
We present values for the masses of Saturn and its major satellites, the zonal harmonics in the spherical harmonic expansion of Saturn's gravitational potential, and the orientation of the pole of Saturn. We determined these values using an extensive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64896da1429b3ae8ef4d84cffd94c92f
https://doi.org/10.1086/508812
https://doi.org/10.1086/508812
Autor:
Duane Roth
Publikováno v:
Hastings Center Report. 41:29-31
As the nation takes a fresh look at all aspects of medical care, advances in the health sciences--from genetic sequencing to stem cell technology--may give us opportunities to make health care better, faster, and more cost-effective. But first we mus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f6e9690d93ec91a99e1abf65189d993
https://doi.org/10.1002/j.1552-146x.2011.tb00097.x
https://doi.org/10.1002/j.1552-146x.2011.tb00097.x
Autor:
Robert A. Jacobson, Peter G. Antreasian, Duane Roth, Brent Buffington, Jonathon Smith, Sumita Nandi, F. J. Pelletier, Jeremy Jones, Simon Nolet, Kevin Criddle, Shadan Ardalan, Daniel W. Parcher, Paul Thompson, Rodica Ionasescu
Publikováno v:
SpaceOps 2012 Conference.
This paper reports on the orbit determination performance for the Cassini spacecraft from July 2008 to December 2011. During this period, Cassini made 85 revolutions around Saturn and had 52 close satellite encounters. 35 of those were with the massi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c824e1376ad728318db02d9c275fc296
https://doi.org/10.2514/6.2012-1256588
https://doi.org/10.2514/6.2012-1256588
Publikováno v:
Journal of Spacecraft and Rockets. 28:530-535
Results are presented of a simulated orbit determination analysis for three phases of the Mars Observer mission (interplanetary cruise, orbit insertion, and mapping), together with a summary of orbital accuracies throughout the Mars Observer mission.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2d95b2abd8dbff46953e50b131fd770
https://doi.org/10.2514/3.26277
https://doi.org/10.2514/3.26277
Autor:
Jeremy Jones, Troy Goodson, Frederic J. Pelletier, R. Ionasescu, Kevin Criddle, Peter G. Antreasian, Duane Roth, Shadan Ardalan, Andrew T. Vaughan, Daniel W. Parcher, Paul Thompson
Publikováno v:
AIAA/AAS Astrodynamics Specialist Conference and Exhibit.
Telemetry data are used to improve navigation of the Saturn orbiting Cassini spacecraft. Thrust induced delta V's are computed on-board the spacecraft, recorded in telemetry, and downlinked to Earth. This paper discusses how and why the Cassini Navig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56f41bfd21265881e8b25a6996ace022
https://doi.org/10.2514/6.2008-6746
https://doi.org/10.2514/6.2008-6746
Autor:
Rodica Ionasescu, Kevin Criddle, F. J. Pelletier, Peter G. Antreasian, Ruairi J Mackenzie, Jeremy Jones, Robert A. Jacobson, Andrew T. Vaughan, Shadan Ardalan, Daniel W. Parcher, Paul Thompson, Duane Roth
Publikováno v:
SpaceOps 2008 Conference.
The Cassini orbiter is the largest and most complex interplanetary spacecraft ever built. Since attaining orbit around Saturn in the summer of 2004, Cassini, along with its Huygens probe, have been continually improving our understanding Saturn, its
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd8659f70c5239c0e1f1e99397b8673a
https://doi.org/10.2514/6.2008-3412
https://doi.org/10.2514/6.2008-3412