Firstbrook, D. , Worrall, K. , Timoney, R., Harkness, P. , Suñol, F. and Gao, Y. (2016) Ultrasonically Assisted Penetration Through Granular Materials. 13th International Planetary Probe Workshop, Laurel, MD, USA, 13-17 Jun 2016.
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Text (Poster Presentation)
156534.pdf - Presentation 1MB |
Abstract
Gaining access to the subsurface of planetary bodies is troublesome for a number of reasons, but particularly due to the low gravity encountered resulting in a lower available weight of spacecraft. A lower weight-on-bit (WOB) often results in sub-optimal drilling, and without complex anchoring or thrusting systems a planetary lander can only impart as much force as it weighs. This work investigates the use of ultrasonic vibration in assisting penetration through granular material. Compared to non-ultrasonic penetration, required forces have been observed to reduce by over a factor of 12. Similarly, total consumed power can be reduced by 28%, depending on the substrate and ultrasonic amplitude used. Tests were also carried out in high-gravity situations, displaying a trend that suggests these benefits would strengthen in lower gravity regimes.
Item Type: | Conference or Workshop Item |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Worrall, Dr Kevin and Firstbrook, David George and Timoney, Dr Ryan and Harkness, Professor Patrick |
Authors: | Firstbrook, D., Worrall, K., Timoney, R., Harkness, P., Suñol, F., and Gao, Y. |
College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
Copyright Holders: | Copyright © 2016 The Authors |
Publisher Policy: | Reproduced with the permission of the Authors |
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