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Proceedings Paper

Auto-Gopher: a wireline deep sampler driven by piezoelectric percussive actuator and EM rotary motor
Author(s): Mircea Badescu; Aaron Ressa; Hyeong Jae Lee; Yoseph Bar-Cohen; Stewart Sherrit; Kris Zacny; Gale L. Paulsen; Luther Beegle; Xiaoqi Bao
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Paper 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.

Paper Details

Date Published: 19 April 2013
PDF: 8 pages
Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86922S (19 April 2013); doi: 10.1117/12.2010319
Show Author Affiliations
Mircea Badescu, Jet Propulsion Lab. (United States)
Aaron Ressa, Jet Propulsion Lab. (United States)
Hyeong Jae Lee, Jet Propulsion Lab. (United States)
Yoseph Bar-Cohen, Jet Propulsion Lab. (United States)
Stewart Sherrit, Jet Propulsion Lab. (United States)
Kris Zacny, Honeybee Robotics Spacecraft Mechanisms Corp. (United States)
Gale L. Paulsen, Honeybee Robotics Spacecraft Mechanisms Corp. (United States)
Luther Beegle, Jet Propulsion Lab. (United States)
Xiaoqi Bao, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 8692:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
Jerome Peter Lynch; Chung-Bang Yun; Kon-Well Wang, Editor(s)

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