1,951 to 1,960 of 1,960 Results
Jan 3, 2022
de Pablos, Juan L.; Bandyopadhyay, Saptarshi; Quadrelli, Marco B.; Bayard, David S.; Case Bradford, Samuel; Gehlot, Vinod; Balas, Mark, 2022, "Detection and Mitigation of Transient Instabilities in Deployable Booms", https://hdl.handle.net/2014/56104, AIAA SciTech 2022, San Diego, California, January 3-7, 2022, JPL Open Repository
Deployable space structures offer versatile uses in many space applications, as they can create very large space structures from a single space launch. However, they usually present important dynamical challenges during the critical deployment phase. In this paper, we focus on th... |
Jan 3, 2022
Sullivan, Christopher J.; Bosanac, Natasha; Anderson, Rodney L.; Mashiku, Alinda K., 2022, "Exploring the Low-Thrust Transfer Design Space in an Ephemeris Model via Multi-Objective Reinforcement Learning", https://hdl.handle.net/2014/56096, AIAA SciTech 2022, San Diego, California, January 3-7, 2022, JPL Open Repository
Multi-Reward Proximal Policy Optimization (MRPPO) is a multi-objective reinforcement learning algorithm used to train multiple policies to uncover solutions within a multi-objective solution space. MRPPO is used in this paper to train policies to construct low-thrust transfers fo... |
Jan 3, 2022
Wong, Kit Pui F.; Chinn, James Z.; Kim, Wousik; Xie, Julie, 2022, "Space Induced Discharge Model to Be Used on Interface Circuit Vulnerability Assessment", https://hdl.handle.net/2014/56094, AIAA SciTech 2022, San Diego, California, January 3-7, 2022, JPL Open Repository
Charging can occur in space due to plasma and high energy particles. Charging is especially severe in certain earth orbits such as geostationary orbit, medium earth orbit and highly inclined orbit. A spacecraft that travels to other planets such as Jupiter also encounters high le... |
Jan 3, 2022
Restrepo, Carolina I.; Petro, Noah E.; Barker, Michael K.; Mazarico, Erwan; Liounis, Andrew; Gnam, Christopher; Scheidt, Stephen; Richardson, Jacob; Ansar, Adnan I.; Cheng, Yang; Morgan, Zachary; Iwashita, Yumi; Beyer, Ross A., 2022, "Building Lunar Maps for Terrain Relative Navigation and Hazard Detection Applications", https://hdl.handle.net/2014/56103, AIAA SciTech 2022, San Diego, California, January 3-7, 2022, JPL Open Repository
Terrain Relative Navigation (TRN) systems that localize a spacecraft with respect to a map of the surface by comparing descent imagery to that reference map can only be as accurate as the reference map itself. Accurate map products that are based on orbital reconnaissance data mu... |
Jan 3, 2022
Kriechbaum, Kristo L; Cullimore, Emily; Logan, Cambria; Joonhigh, Sihah; Roberts, Eric; Anderson, Allen; Oakes, Eric; Hetzel, Mark; Wong, Anthony, 2022, "Europa Lander: Outside the Vault", https://hdl.handle.net/2014/56370, AIAA SciTech 2022 (Virtual / In-Person Hybrid), San Diego, California, January 3-7, 2022, JPL Open Repository
No abstract provided |
Jan 3, 2022
Saptarshi Bandyopadhyay, 2022, "Kilometer-Scale Parabolic Reflector for a Radio Telescope in a Lunar Crater", https://doi.org/10.48577/jpl.ZZARGA, AIAA SciTech 2022 (Virtual / In-Person Hybrid), JPL Open Repository
We present a structural architecture, as well as packaging and deployment strategies for a parabolic reflector for a conceptual radio telescope on the Moon. We study point designs with the reflector diameter between 350 meters and 1 kilometer. The structural architecture is based... |
Jan 3, 2022
Johnson, Andrew E; Aaron, Seth; Ansari, Hugh; Bergh, Charles; Bourdu, Helene; Butler, Jim; Chang, Johnny; Cheng, Yang; Cheng, Richard; Clark, Ken; Clouse, Daniel; Donnelly, Robert; Gostelow, Kim; Jay, William; Jordan, Michael; Mohan, Swati; Montgomery, James F.; Morrison, Jack; Schroeder, Steven; Boris,; Shenker,; George,; Sun,; Umsted, Carson; Trawny, Nikolas; Vaughan, Geoffrey; Ravine, Michael; Schaffner, Jacob; Shamah, Joe M.; Zheng, Jason, 2022, "Mars 2020 Lander Vision System Flight Performance", https://hdl.handle.net/2014/56368, AIAA SciTech 2022 (Virtual / In-Person Hybrid), San Diego, California, January 3-7, 2022, JPL Open Repository
No abstract provided |
Jan 3, 2022
Gehlot, Vinod P.; Balas, Mark J.; Bandyopadhyay, Saptarshi; Quadrelli, Marco B.; Bayard, David S.; Bradford, Samuel Case; Pablos, Juan L. de, 2022, "Multi-Agent Control Approach to the Stability of Linear Deployable Systems", https://hdl.handle.net/2014/56118, AIAA SciTech 2022, San Diego, California, January 3-7, 2022, JPL Open Repository
Collisions and undesired dynamic responses may occur during the expansion phase of deployable elements on a spacecraft. This problem is more pronounced in large and complex deployable elements where characterization of transient dynamics using testing and simulation can be challe... |
Jan 3, 2022
Dutta, Soumyo; Karlgaard, Christopher D.; Kass, David; Mischna, Michael; Villar, Gregorio, 2022, "Post-flight Analysis of Atmospheric Properties from Mars 2020 Entry, Descent, and Landing", https://hdl.handle.net/2014/56097, AIAA SciTech 2022, San Diego, California, January 3-7, 2022, JPL Open Repository
The Mars 2020 spacecraft landed the Perseverance rover and Ingenuity helicopter successfully in Jezero crater on Feb. 18, 2021. The entry, descent, and landing (EDL) sequence of the spacecraft largely leveraged the previous 2012 Mars Science Laboratory (MSL) mission. The atmosphe... |
Jan 3, 2022
Aiazzi, Carolina; Gaut, Aaron; Jain, Abhinandan; Elmquist, Asher; Young, Aaron, 2022, "IRIS: High-fidelity Perception Sensor Modeling for Closed-Loop Planetary Simulations", https://hdl.handle.net/2014/56393, AIAA SciTech 2022 (Virtual / In-Person Hybrid), San Diego, California, January 3-7, 2022, JPL Open Repository
No abstract provided |
