Mars Surveyor 2001

Mars Surveyor 2001
	Mars Odyssey Unnamed lander; Marie Curie;
Manufacturer	JPL; Lockheed Martin;
	Mars Exploration Program ← Mars Surveyor '98 2001 Mars Odyssey →

The Mars Surveyor 2001 project was a multi-part Mars exploration mission intended as a follow-up to Mars Surveyor '98. After the two probes of the 1998 project, Mars Climate Orbiter and Mars Polar Lander, were both lost, NASA's "better, faster, cheaper" exploration philosophy was re-evaluated, with a particular eye on the two 2001 project probes. As a result, the mission, along with the launch of its lander and rover, were canceled in May 2000, but the decision was made to continue development with its orbiter counterpart. The orbiter launched as 2001 Mars Odyssey in April 2001, in a mission independent of the Mars Surveyor project, and reached Mars in October 2001. After being placed in a cleanroom in 2001 and stored since, the nearly-completed lander component was eventually reused to fly the Phoenix mission,^[1] which launched in August 2007 and landed successfully on Mars in May 2008.

Spacecraft

Orbiter

Lander

The 2001 Surveyor lander spacecraft was built under contract to NASA by the

Martian dust on the power systems.^[3] MIP's overall external envelope is approximately 40 x 24 x 25 cm (15.7 x 9.4 x 9.8 inches), and its mass is 8.5 kg (18.7 lb).^[2] Most of the top surface was covered by various types of solar cells. MIP included five experiments :^[2]

Mars Atmospheric Acquisition and Compression (MAAC): to selectively absorb and compress carbon dioxide from the Martian atmosphere; It might absorb ~ 4g CO₂ over 1 to 3 nights, then release it on being heated.

Oxygen Generator Subsystem (OGS): to produce propellant-grade, pure oxygen; a

zirconia

solid-oxide oxygen generator produces oxygen by electrolyzing CO₂ at elevated temperatures (750 °C).

Mars Array Technology Experiment (MATE): to measure the spectrum at the Mars surface and to test several advanced photovoltaic solar cells;
Dust Accumulation and Repulsion Test (DART): to investigate the properties of dust and to test techniques (e.g. electrostatic repulsion) to mitigate the settling of dust on to solar arrays;
Mars Thermal Environment & Radiator Characterization (MTERC): to measure the night sky temperature and to demonstrate the performance of high and low emissivity radiators

After the failure of the Mars Surveyor 98 mission, the launch of the Mars Surveyor 2001 lander was cancelled in May 2000, and the near-completed spacecraft was placed in an environmentally controlled

Mars Scout Program, and the spacecraft was used as the lander on the Phoenix

mission; it is currently on Mars in the north polar region. In addition to using the 2001 Surveyor Lander, three of the experiments flown on the Phoenix mission are instruments that were originally built for the Mars Surveyor 2001 Lander:

the Microscopy, Electrochemistry, and Conductivity Analyzer (MECA);
the never-used Mars Descent Imager (MARDI) camera;
the Robotic Arm, which was modified for the Phoenix mission.

Rover

Prior to mission cancellation, cost overruns and technical problems caused the Lander design to be rescoped, and the planned large Athena

MER-B Opportunity, landed at Mars Surveyor 2001 Lander's target site, Meridiani Planum

.)

References

^ NASA, NASA Spacecraft Heads for Polar Region on Mars, RELEASE : 45-07
^ ^a ^b ^c D. Kaplan et al., THE MARS IN-SITU-PROPELLANT-PRODUCTION PRECURSOR (MIP) FLIGHT DEMONSTRATION, paper presented at Mars 2001: Integrated Science in Preparation for Sample Return and Human Exploration, Lunar and Planetary Institute, Oct. 2-4 1999, Houston, TX.
^ G. A. Landis, P. Jenkins, D. Scheiman, and C. Baraona, "MATE and DART: An Instrument Package for Characterizing Solar Energy and Atmospheric Dust on Mars", presented at Concepts and Approaches for Mars Exploration, July 18–20, 2000 Houston, Texas.
^ "Phoenix Mars Lander- Spacecraft". Phoenix Mars Lander. Retrieved June 9, 2006.