1 to 10 of 13 Results
Apr 24, 2024
Hyeong Jae Lee, 2024, "Through-Ice Acoustic Communication for Ocean Worlds Exploration", https://doi.org/10.48577/jpl.NI8LQ5, Sensors, JPL Open Repository
Subsurface exploration of ice-covered planets and moons presents communications challenges, because of the need to communicate through several kilometers of ice. The objective of the task is to develop the capability to wirelessly communicate through ice and thus enable the appli... |
Mar 25, 2024
Yoseph Bar-Cohen, 2024, "Acoustics and RF communication thru deep ice for application to ocean worlds exploration", https://doi.org/10.48577/jpl.MXSIR5, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
One of NASA’s priorities is the in-situ exploration of ocean worlds in the solar system where there may potentially exist life under the ice shell. This requires reaching the ocean below through great depths of ice at extremely low temperatures. Jupiter’s moon Europa is such a ch... |
Mar 25, 2024
Yoseph Bar-Cohen, 2024, "Piezoelectric motor for cryogenic applications", https://doi.org/10.48577/jpl.QTG9E6, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
No abstract available. |
Mar 25, 2024
Yoseph Bar-Cohen, 2024, "Piezoelectric motor for cryogenic applications", https://doi.org/10.48577/jpl.D4KMUF, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
Expanding the capabilities that are used in the NASA’s exploration of planetary bodies in our solar system would require mechanisms and actuators that can operate at cryogenic temperatures (-240 °C to -60 °C) in dusty environments. These applications include the exploration of lu... |
Mar 25, 2024
Hyeong Jae Lee, 2024, "Development of Elastic Wave Analyzer for Icy Sub-surfaces (EWAIS) in water-bearing worlds", https://doi.org/10.48577/jpl.DQQM2Q, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
Active acoustic probing is important for supporting the investigation of icy subsurfaces and under-surface liquid water in potentially water-bearing habitable worlds. Many planetary orbital spacecraft and lander mission concepts have already been equipped with or are in the proce... |
Mar 25, 2024
Hyeong Jae Lee, 2024, "Elastic wave analyzer for icy sub-surfaces (EWAIS) of ocean worlds", https://doi.org/10.48577/jpl.1Q3MYH, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
No abstract available. |
Mar 25, 2024
Stewart Sherrit, 2024, "Characterization of surface parallel mirror actuation using preloaded commercial lead zirconate titanate (PZT) stacks", https://doi.org/10.48577/jpl.TWUFCE, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
The next generation of space telescopes will require large, segmented apertures for observations in the near ultraviolet through mid- and far-infrared regions to enable new science ranging from exoplanet characterization to precision astronomical observations that refine astrophy... |
Mar 25, 2024
Stewart Sherrit, 2024, "A network model for piezoelectric flexure actuators", https://doi.org/10.48577/jpl.GWO9YG, SPIE Smart Structures and Nondestructive Evaluation 2024, JPL Open Repository
We investigate flexure piezoelectric stacks to produce large force and fine position control. The network model for the free ideal stack with many layers was first worked out by Martin [Martin 1963, 1964a, 1964b]. He noted that the stack impedance model in the limit of large laye... |
Feb 19, 2024
Yoseph Bar-Cohen, 2024, "Piezoelectric motor for cryogenic applications", https://doi.org/10.48577/jpl.CKVPCC, Worldwide Advanced Manufacturing Symposium 2024,, JPL Open Repository
No abstract available. |
Feb 19, 2024
Yoseph Bar-Cohen, 2024, "Piezoelectric motor for cryogenic applications", https://doi.org/10.48577/jpl.58C6YA, Worldwide Advanced Manufacturing Symposium 2024,, JPL Open Repository
No abstract available. |
