ALSSAT Development Status

Yeh, H. Y.; Brown, Christine Ann; Anderson, Molly; Ewert, Michael K.; Jeng, Frank F.

doi:10.4271/2009-01-2533

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…We use this requirement to calculate the prepackaged food requirements of the two transit legs of each mission scenario, as well as the extra 50 or 500 days of food for surface operations in Scenarios 1 and 2 respectively. Given published infrastructure costs 13 associated with a Mars Surface Habitat Vehicle 20 , we calculate ESM through consideration of the food subsystem including food, packaging, refrigeration 13,20 , and processing. Compare this case to a long-duration mission scenario in which food is grown during surface operations, in which literature suggests that a sizable initial hardware set would be required 13 .…”

Section: Segmentmentioning

confidence: 99%

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Extension of Equivalent System Mass for Human Exploration Missions on Mars

Berliner¹,

Makrygiorgos²,

Hill³

2021

Preprint

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NASA mission systems proposals are often compared using an equivalent system mass (ESM) framework wherein all elements of technology to deliver an effect- its components, operations and logistics of delivery- are converted to effective masses since this has a known cost scale in space operations. To date, ESM methods and the tools for system comparison have not considered complexities wherein systems that serve a mission span multiple transit and operations stages, such as would be required to support a crewed mission to Mars, and thus do not account for the different mass equivalency factors operational during each period and the inter-dependencies of the costs across the mission. Further, ESM does not account well for the differential reliabilities of the underlying technologies. Less reliability should incur an equivalent mass cost for technologies that might otherwise provide a mass advantage. We introduce an extensions to ESM to address these limitations and show that it provides a direct method for analyzing, optimizing and comparing different mission systems. We demonstrate our extended ESM (xESM) calculation with crop production technologies -- an aspect of the developing offworld biomanufacturing suite -- since it represents a case with strong coupling among stages of the mission and a relatively high-risk profile.

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Section: Segmentmentioning

confidence: 99%

“…Currently, ESM remains the standard metric for evaluating ALS technology development 9,11,12 and systems [13][14][15][16] . It has been adopted for use in trade studies [17][18][19] , as the the metric for life support sizing [20][21][22] , and has been incorporated into several tools [23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

Extension of Equivalent System Mass for Human Exploration Missions on Mars

Berliner¹,

Makrygiorgos²,

Hill³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Food, medicine, and gas exchange to sustain humans imposes important ECLSS feasibility constraints (Yeh et al, 2005;Yeh et al, 2009;Weber and Schnaitmann, 2016). These arise from a crewmember (CM) physiological profile, with an upper-bound metabolic rate of ∼ 11-13 MJ/CM-sol that can be satisfied through prepackaged meals and potable water intake of 2.5 kg/CM-sol (Liskowsky and Seitz, 2010;Anderson et al, 2018).…”

Section: Feasibility Needs and Mission Architecturementioning

confidence: 99%

Towards a Biomanufactory on Mars

Berliner

Hilzinger

Abel

et al. 2021

Front. Astron. Space Sci.

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A crewed mission to and from Mars may include an exciting array of enabling biotechnologies that leverage inherent mass, power, and volume advantages over traditional abiotic approaches. In this perspective, we articulate the scientific and engineering goals and constraints, along with example systems, that guide the design of a surface biomanufactory. Extending past arguments for exploiting stand-alone elements of biology, we argue for an integrated biomanufacturing plant replete with modules for microbial in situ resource utilization, production, and recycling of food, pharmaceuticals, and biomaterials required for sustaining future intrepid astronauts. We also discuss aspirational technology trends in each of these target areas in the context of human and robotic exploration missions.

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“…The requirements for sustaining a human population in terms of food, medicine, and gas exchange can impose important feasibility constraints [25][26][27] on the closed-loop life support system. The chief feasibility constraints are driven by the physiological profile of a crewmember (CM), with an upper-bound metabolic rate of ∼11-13 MJ/CM-sol that can be satisfied through prepackaged meals and potable water intake of 2.5 kg/CM-sol 28,29 .…”

Section: Feasibility Needs and Mission Architecturementioning

confidence: 99%

Towards a Biomanufactory on Mars

Berliner¹,

Hilzinger²,

Abel³

et al. 2020

Preprint

View full text Add to dashboard Cite

A crewed mission to and from Mars may include an exciting array of enabling biotechnologies that leverage inherent mass, power, and volume advantages over traditional abiotic approaches. In this perspective, we articulate the scientific and engineering goals and constraints, along with example systems, that guide the design of a surface biomanufactory. Extending past arguments for exploiting stand-alone elements of biology, we argue for an integrated biomanufacturing plant replete with modules for microbial \textit{in situ} resource utilization, production, and recycling of food, pharmaceuticals, and biomaterials required for sustaining future intrepid astronauts. We also discuss aspirational technology trends in each of these target areas in the context of human and robotic exploration missions in the coming century.

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ALSSAT Development Status

Cited by 6 publications

References 10 publications

Extension of Equivalent System Mass for Human Exploration Missions on Mars

Extension of Equivalent System Mass for Human Exploration Missions on Mars

Towards a Biomanufactory on Mars

Towards a Biomanufactory on Mars

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