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Jan 5, 2023
Power Measurements to Excavate Lunar Soil Simulant GRC-3B Using Arc Backhoe Trajectories
Authors: Margaret P. Proctor and Fransua ThomasAuthor Affiliations
Publication: Earth and Space 2022
ABSTRACT
Understanding, mitigating, and minimizing power and mass requirements are crucial to developing the next generation excavation technologies for lunar and planetary in situ resource utilization (ISRU). Towards this end, electrical power to the advanced planetary excavator (APEX) was measured while excavating granular lunar soil simulant GRC-3B. Using a 21.6-cm wide bucket having a 30° leading edge, arc-shaped backhoe trajectories were dug to depths of 5, 10, and 20 cm with rake angles of 10, 20, and 30 degrees. Maximum net power, net energy, net energy per mass excavated, rate of mass excavated, horizontal distance from soil entry to exit (at bucket tip), and the trajectory to bucket volume percentage are presented to inform the scientific community as trajectories and designs are planned for future missions. Using APEX’s capability to evaluate power and energy consumption of excavation tools and processes gives guidance to developing power requirements and efficient methods for lunar excavation.
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REFERENCES
He, C., Zeng, X., and Wilkinson, A. (2013). “Geotechnical Properties of GRC-3 Lunar Simulant.” J. Aerospace Eng. 2013.26:528–534, ASCE.
Proctor, M., Johnson, K., Thomas, F., and Hau, Y. (2021). “Force Measurements to Excavate Lightly Compacted Granular Lunar Soil Simulant GRC-3B.” ASCE Earth and Space Conference.
Zeng, X. (2018). “Geotechnical Properties of GRC-3B.” NASA PC11524609.
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Published online: Jan 5, 2023
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Margaret P. Proctor
NASA Glenn Research Center, Cleveland, OH
Fransua Thomas
NASA Glenn Research Center, Cleveland, OH
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.