1 to 10 of 63 Results
Apr 19, 2021
Bao, Xiaoqi; Bar-Cohen, Yoseph; Badescu, Mircea; Lee, Hyeong Jae; Lih, Shyh-Shiuh; Sherrit, Stewart, 2021, "Acoustic Communication in Ice Crust for Ocean Accessing Probes", https://hdl.handle.net/2014/54751, ASCE 2021 Earth and Space Conference 2021, Reston, Virginia, April 19-23, 2021, JPL Open Repository
No abstract provided |
Mar 22, 2021
Bar-Cohen, Yoseph; Bao, Xiaoqi; Lee, Hyeong Jae; Hockman, Benjamin; Badescu, Mircea; Sherrit, Stewart; Lih, Shyh-Shiuh, 2021, "Acoustic Communication in Deep Ice at Ocean Worlds", https://hdl.handle.net/2014/54427, SPIE Smart Structures + Nondestructive Evaluation 2021, Long Beach, California, March 22-26, 2021, JPL Open Repository
One of NASA priorities is the in-situ exploration of ocean worlds in the solar system where potentially there might be life under the ice shell. This requires reaching the ocean below extremely cold through significant deep ice. Jupiter’s moon, Europa, is such a challenging body,... |
Mar 22, 2021
Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Badescu, Mircea; Bar-Cohen, Yoseph; Malaska, Mike, 2021, "Acoustic Sensor Network for Planetary Exploration", https://hdl.handle.net/2014/54435, SPIE Smart Structures + Nondestructive Evaluation 2021, Long Beach, California, March 22-26, 2021, JPL Open Repository
This paper investigates the concept of an acoustic sensor network that can monitor a variety of geophysical processes occurring on other planetary bodies. In many cases sound is naturally omnidirectional and travels at known speeds which depend on the composition and density of t... |
Mar 22, 2021
Bar-Cohen, Yoseph; Badescu, Mircea; Lee, Hyeong Jae; Sherrit, Stewart; Bao, Xiaoqi; Shirajian, Nareg, 2021, "Sample Return Containerization and Planetary Protection Using Brazing for Breaking the Chain of Contact to Mars", https://hdl.handle.net/2014/54429, SPIE Smart Structures + Nondestructive Evaluation 2021, Long Beach, California, March 22-26, 2021, JPL Open Repository
Planetary protection of Mars samples returned to Earth in a future NASA mission is a critical part of preventing uncontrolled biological materials being released from the samples. The planetary protection process requires addressing the potential risks and would involve “breaking... |
Apr 27, 2020
Lee, Hyeong Jae; Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Heness, Maikel, 2020, "Elastic wave analyzer for icy sub-surfaces (EWAIS) in water-bearing worlds", https://hdl.handle.net/2014/52324, Smart Structures Symposium, Anaheim, California, April 27-30, 2020, JPL Open Repository
In this paper, we discuss the current status of the development of an elastic wave analyzer for icy sub-surface (EWAIS). We begin with an introductory overview of the necessity to develop an active elastic wave transmitter that will enable reaching distances of kilometer thru ice... |
Apr 26, 2020
Sherrit, Stewart; Lee, Hyeong Jae; Bao, Xiaoqi; Badescu, Mircea; Bar-Cohen, Yoseph, 2020, "Composite Piezoelectric Resonator 1D Modeling with Loss", https://hdl.handle.net/2014/52334, SPIE Smart Structures and Nondestructive Evaluation 2020 Symposia, Anaheim, California, April 26-30, 2020, JPL Open Repository
Abstract – Maximizing the benefit of applying piezoelectric materials in composite structures, which are a mix of piezoelectric and elastic elements, requires analytical modeling. In this paper we describe two main classes of resonators and how to model using network equivalent i... |
Apr 13, 2020
Lee, Hyeong Jae; Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Heness, Maikel, 2020, "Elastic wave analyzer for icy sub-surfaces (EWAIS) of ocean worlds", https://hdl.handle.net/2014/52808, Virtual Conference SPIE Smart Structures and Nondestructive Evaluation 2020 Symposia, Anaheim, California, April 13 - May 1, 2020, JPL Open Repository
No abstract provided |
Jul 15, 2019
Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Jackson, Shannon; Metz, Brandon; Zacny, Kris; Mellerowicz, Bolek; Kim, Daniel; Paulsen, Gale L., 2019, "Auto-Gopher-2 (AG2) - an autonomous wireline piezo-percussive drill for deep excavation", https://hdl.handle.net/2014/51274, Lunar ISRU Workshop 2019, Columbia, Maryland, July 15-17, 2019, JPL Open Repository
No abstract provided |
Mar 3, 2019
Bar-Cohen, Yoseph; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Bombela, Erik; Sandhu, Sukhwinder, 2019, "Sample containerization and planetary protection using brazing for breaking the chain of contact to Mars", https://hdl.handle.net/2014/50668, SPIE Smart Structures, Denver, Colorado, March 3-7, 2019, JPL Open Repository
The process consists of two-steps, where one is intended to be prepared on Earth and the second would be executed on orbit around Mars. The latest results of this study will be described and discussed. |
Mar 3, 2019
Badescu, Mircea; Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Lee, Hyeong Jae; Jackson, Shannon; Metz, Brandon; Valles, Zachary C.; Zacny, Kris; Mellerowicz, Bolek; Kim, Daniel; Paulsen, Gale L., 2019, "Auto-Gopher II - an autonomous wireline rotary-hammer ultrasonic drill - test results", https://hdl.handle.net/2014/50667, SPIE Smart Structures, Denver, Colorado, March 3-7, 2019, JPL Open Repository
In this paper, we present the latest developments including the integration of the whole drill, laboratory testing and field test results. |
