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Appendix D: Other Missions Considered
Pages 355-368

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From page 355...
... included the following (in approximate order of distance from the Sun) : • Mercury Lander • Venus Mobile Explorer • Venus Intrepid Tessera Lander • Lunar Polar Volatiles Explorer • Mars Sky Crane Capabilities • Mars Geophysical Network • Mars Polar Climate Mission • Ganymede Orbiter • Enceladus Rapid Mission Architecture • Titan Lake Probe • Chiron Orbiter • Neptune-Triton-KBO Mission.
From page 356...
... The resulting "point design" could then, as an option, be subjected to a full mission study. MERCURY LANDER The Mercury Lander mission concept study was performed by the Space Department of the Johns Hopkins University Applied Physics Laboratory in partnership with NASA's Marshall Space Flight Center and Glenn Research Center.
From page 357...
... Currently each approach has benefits and risks that could not be fully characterized at this level of study. VENUS MOBILE EXPLORER The Venus Mobile Explorer mission concept study was performed by NASA's Goddard Space Flight Center.
From page 358...
... Technology development, accommodation, and complex integration also contribute to the high cost of the probe. VENUS INTREPID TESSERA LANDER The Venus Intrepid Tessera Lander mission concept study was performed by NASA's Goddard Space Flight Center and NASA's Ames Research Center.
From page 359...
... Conclusions A lunar polar volatiles mission represents an important opportunity to study the nature, composition, and dynamics of volatiles trapped in the frigid interiors of lunar polar impact craters. It also provides an opportunity to investigate polar volatiles, especially water ice, as a potential resource for the future human exploration of the Moon and destinations beyond.
From page 360...
... MARS SKY CRANE CAPABILITIES The Mars Sky Crane Capabilities study was performed by NASA's Jet Propulsion Laboratory. Overview The purpose of this special study was not focused on a mission but on exploring the full range of science capabilities that could be delivered to the surface of Mars by a Mars Science Laboratory (MSL)
From page 361...
... MARS GEOPHYSICAL NETWORK The Mars Geophysical Network mission concept study was performed by NASA's Jet Propulsion Laboratory. Overview The purpose of this full mission study was to investigate a geophysical network mission for Mars.
From page 362...
... MARS POLAR CLIMATE MISSION The Mars Polar Climate Mission concept study was performed by NASA's Jet Propulsion Laboratory. Overview An RMA study was conducted to explore which science objectives related to the study of the martian climate through the record preserved in the polar-layered deposits (PLDs)
From page 363...
... For all moderate mission risks, mitigation strategies have been incorporated into the final mission architecture. The mission was not given further consideration because of the likelihood that the ESA Jupiter Ganymede Orbiter would achieve most of the same science goals.
From page 364...
... Mission Design The RMA study examined 15 mission architectures, including one Enceladus flyby, nine Enceladus orbiters, four Enceladus sample returns, and the Titan-Enceladus Connection. The different types of orbiters proposed varied in their secondary payload, instruments, and mission duration.
From page 365...
... . TITAN LAKE PROBE The Titan Lake Probe mission concept study was performed by NASA's Jet Propulsion Laboratory.
From page 366...
... The cryogenic environment of Titan and lack of heritage in lake probe design would necessitate strategic investment in technology development, including cryogenic sample acquisition and handling. CHIRON ORBITER The Chiron Orbiter mission concept study was performed by NASA's Goddard Space Flight Center.
From page 367...
... This study demonstrated the need for continued investments in long-term communication infrastructure and propulsion technologies before such missions could be attempted. NEPTUNE-TRITON-KBO MISSION The Neptune-Triton-KBO mission concept study was performed by NASA's Jet Propulsion Laboratory, and a follow-on full mission study of a Neptune Orbiter with Probe was conducted by the Johns Hopkins University Applied Physics Laboratory.
From page 368...
... More complex missions and orbiters provided a vast gain in science objectives that would be unavailable to flyby missions, but at increased cost; the highest-performance option yielded a modest increase in estimated science value for its higher cost. More detailed design work of a "sweet spot" mission design identified technical risks that make a Uranus mission more favorable for the coming decade.


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