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Dynamic Mars: Activity, Transport and Change Strategic Goals for the 2013 Mars Science Orbiter. Overview June 7, 2007 Report of the Mars Science Orbiter Science Analysis Group MSO SAG-2 Wendy Calvin, Chair. Mars Science Orbiter (MSO 2013) MEPAG Science Analysis Group Activity.
June 7, 2007
Report of the Mars Science Orbiter
Science Analysis Group
Wendy Calvin, Chair
Emphasized characterization of loss of water to space through the upper Mars atmosphere.
Complemented by measurements of key biogeochemical gases (e.g., methane,ethane, etc.)
in the lower Mars atmosphere, possibly identifying local areas for future landed exploration.
Cost of mission, with straw-man payload, included in 2006 POP guidelines (carried over to 2007).
Two Mars Scout teams, both focusing on the upper atmosphere processes and escape to space,
were selected for a head-to-head competition for the 2011 launch opportunity.
A new Science Analysis Group was formed to re-evaluate options for the 2013 launch opportunity.
The New Study for MSO
Science Analysis Group (SAG-2) Chaired by W. M. Calvin
Review concepts for MSO 2013 including, but not limited to:
- Trace Gas Investigation (including work from SAG-1)
- Imaging (1-meter/pixel class or better to support future missions)
- Orbital Geophysics
- Combination with a landed (drop-off) package
Goal: Identify MRO-Class Missions with outstanding science and with scientific feed-forward
to future near-term missions
Current Study: SAG-2
Group held weekly telecons, augmented by subgroup telecon meetings.
Subgroups organized along discipline lines to develop key science questions,
traceable to MEP goals and objectives:
- Atmospheres, Polar, Geology/Geophysics, Landed Geophysics
Several science themes considered with agreement on 3 final mission scenarios, each of which addresses an overall theme of Dynamic Mars: Activity, Transport, and Change:
Plan A: Atmospheric Signatures and Near-Surface Change
Plan P: Polar and Climate Processes
Plan G: Geological and Geophysical Exploration
A Core-Mission-Concept providing a good balance of in-depth focus and cross-disciplinary reach was defined for each scenario.
Cost/mass option space was explored by considering options which either augmented or reduced the scope of the core concept.
One core concept and two augmented options included a landed drop-off package with the following science:
Geophysics (seismology, tracking for geodynamics, heat flow), Meteorology
Discussed with MEPAG Chairs and MEP Lead Scientist for Mars
Posted on MEPAG website: http://mepag.jpl.nasa.gov/reports/index.html
10-year lifetime for telecom, “MRO-Class” Mission
1 June 2007
Gully in Hale crater, MRO-HiRISE (U Az)
North polar stratigraphy, MRO-HiRISE (U Az)
Recent Impact, MRO HiRISE (U AZ)
MSO Science Goals
Feed-ForwardMars Science Orbiter (MSO) 2013 Science Rationale
Atmospheric Signatures of Subsurface Activity
Biotic or Geochemical?
Changes in Geomorphology
Surface Change Today
Crustal activity and Dynamics
Change in Geomorphology
What lies beneath the dust mantle?
Ancient Climate Change
Surface Change Today
DYNAMIC MARS: Activity, Transport and Change
Modern Climate Change
Polar AFL or Station
Mid-Range Rovers, MSR
Ice Cap Volume
Dynamics of Volatile Exchange
Polar Energy Balance
Credits: NASA/JPL and MRO CTX & MARCI (MSSS), MRO HiRISE (UA), MGS MOC (MSSS), M. Allen (JPL)
SDT 6/15/07 - 9/15/07
AO Release 2/08
MCR 5/08Mars Science Orbiter (MSO) 2013 Example Mission Concept Description
Landing site imaging
10 years telecom capability
Critical event coverage
Science data relay
Launch November 2013
MOI Capture Orbit 300 X 34,000 km
Aerobrake ~9 months
Science Emphasis ~3 yrs, ~ 300 km
Relay Emphasis ~7 yrs, ~400 km
Target Launch Vehicle Atlas V 411
Launch Mass Capability 3510 kg
Nadir instrument deck
Payload Mass 160 kg w/contingency
14 Gbits per 8-hr pass, X and Ka
500 Gbits data storage
10-year Ka/X/UHF telecom
Simple monopropellant propulsion
1500 W EOL power
Example Payload Considered
* Imager (1 m/pixel)
Landing site imaging, science investigations
* Trace Gas Instrument
Atmospheric constituents, sources, sinks
* Winds Instrument
3D vector field wind mapping
* Thermal IR Spectrometer
Mineralogy, atmospheric gases, polar ice
* Wide Angle Camera
Global atmospheric monitoring & surface imaging
* Included in Concept Payload
(Reduced Plans fit Cost Guideline)
Synthetic Aperture Radar
Shallow subsurface imaging
Geology and polar monitoring
Multibeam High-res. Laser Altimeter
Polar volatile balance and global topography
Seismology, geodynamics, meteorology,
and heat flow
PAYLOAD ELEMENT OPTIONS
For More Details, see the full Report:MEPAG MSO-SAG-2 (2007). Report from the 2013 Mars Science Orbiter (MSO) Second Science Analysis Group, 72 pp., posted June 2007 by the Mars Exploration Program Analysis Group (MEPAG) at http://mepag.jpl.nasa.gov/reports/index.html.
This overview has been approved for public release by JPL Document Review Services (CL#07-1783 )