Description: The Mars Oxygen ISRU Experiment (MOXIE) is a payload on the Mars 2020 mission. MOXIE will be the first demonstration of oxygen production from the Mars atmosphere. This capability for in-situ propellant production is enabling for future human missions to Mars. The scroll pump development to be funded under this proposal is a critical technology needed for MOXIE. The MOXIE scroll pump/compressor will enable demonstrate feasibility of the desired CO2 production rate on the MOXIE experiment. This is a technology demonstration instrument that will pave the way for future use of separated and concentrated Oxygen for manned missions or any other use.Compared with the conventional approach of employing a cryogenic pump, the MOXIE scroll pump/compressor achieves a higher CO2 production rate while consuming fewer mission resources. The present state of the art in scroll compressors is not optimized for duty in Mars atmospheric and environmental conditions. Technology must be developed to survive launch and to optimally use mass, power, and volume resources to achieve the desired mass flow rate of CO2 to feed the SOXIE Oxygen separator device.Additionally, use of a scroll pump to compress CO2 results in a simpler overall MOXIE system design. This is directly related to higher reliability.The scroll compressor technology is much simpler than the alternative cryogenic system The approach will be to design, fabricate, build, test and optimize a prototype compressor which will be as close as possible to NASA�s flight configuration, but using commercial components without a flight pedigree in a rapid proof of feasibility effort. Throughout Phase A, there will be a signification amount of testing conducted on a wide range of prototypes with varying radial clearances, tips seal materials, back up seal densities, involute coatings and surface finishes. In order to efficiently compare these tests, a figure of merit must be defined. Air Squared recommends the metric of mass flow rate delivered per unit power input.If the desired performance metric of mass flow rate per unit power is demonstrated in Phase A, JPL may elect to provide Phase B funding to progress towards a flight-qualified scroll compressor that meets all the anticipated requirements of the Mars 2020 MOXIE experiment. This requires the use of flight-qualifiable components such as motors, bearings, lubricants, and materials. Acquisition lead times are typically much longer and prices are costlier. More engineering effort must be applied to the selection of materials and tuning of designs to survive and function over the wide range of temperatures. Designs must evolve with the intent of surviving launch vibrations in operable condition.