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Auto-Gopher : a wireline deep sampler driven by piezoelectric percussive actuator and EM rotary motor

Show simple item record Badescu, Mircea Ressa, Aaron Jae Lee, Hyeong Bar-Cohen, Yoseph Sherrit, Stewart Zacny, Kris Paulsen, Gale L. Beegle, Luther Bao, Xiaoqi 2014-01-08T18:12:07Z 2014-01-08T18:12:07Z 2013-03-11
dc.identifier.citation SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013 en_US
dc.identifier.clearanceno 13-0825
dc.description.abstract The ability to penetrate subsurfaces and perform sample acquisition at depth of meters may be critical for future NASA in-situ exploration missions to bodies in the solar system, including Mars and Europa. A corer/sampler was developed with the goal of enabling acquisition of samples from depths of several meters where if used on Mars would be beyond the oxidized and sterilized zone. For this purpose, we developed a rotary-hammering coring drill, called Auto-Gopher, which employs a piezoelectric actuated percussive mechanism for breaking formations and an electric motor that rotates the bit to remove the powdered cuttings. This sampler is a wireline mechanism that can be fed into and retrieved from the drilled hole using a winch and a cable. It includes an inchworm anchoring mechanism allowing the drill advancement and weight on bit control without twisting the reeling and power cables. The penetration rate is being optimized by simultaneously activating the percussive and rotary motions of the Auto-Gopher. The percussive mechanism is based on the Ultrasonic/Sonic Drill/Corer (USDC) mechanism that is driven by piezoelectric stack and that was demonstrated to require low axial preload. The design and fabrication of this device were presented in previous publications. This paper presents the results of laboratory and field tests and lessons learned from this development. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2013 en_US
dc.subject drilling en_US
dc.subject sampling en_US
dc.subject piezoactuation en_US
dc.subject auto-gophering en_US
dc.subject planetary sampling en_US
dc.title Auto-Gopher : a wireline deep sampler driven by piezoelectric percussive actuator and EM rotary motor en_US
dc.type Preprint en_US

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