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1 to 10 of 39 Results
Drilling mechanisms using piezoelectric actuators
Jun 18, 2019
Bar‐Cohen, Yoseph; Sherrit, Stewart; Badescu, Mircea; Lee, Hyeong Jae; Bao, Xiaoqi; Chang, Zensheu, 2019, "Drilling mechanisms using piezoelectric actuators", https://hdl.handle.net/2014/50758, Engineering Mechanics Institute Conference 2019 (EMI 2019), Pasadena, California, June 18-21, 2019, JPL Open Repository
No abstract provided
Structural, Thermal, and Optical Performance (STOP) Modeling and Analysis for the Surface Water and Ocean Topography Mission
Jul 8, 2018
Tse, Louis; Chang, Zensheu; Slimko, Eric; Somawardhana, Ruwan, 2018, "Structural, Thermal, and Optical Performance (STOP) Modeling and Analysis for the Surface Water and Ocean Topography Mission", https://hdl.handle.net/2014/50211, ICES 2018: 48th International Conference on Environmental Systems, Albuquerque, New Mexico, July 8-12, 2018, JPL Open Repository
No abstract provided
IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph
Jul 6, 2017
Saini, Navtej; Anderson, Kevin; Chang, Zensheu; Gutt, Gary; Nemati, Bijan, 2017, "IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph", https://hdl.handle.net/2014/48395, SPIE Optics + Photonics 2017, San Diego, California, August 6-10, 2017, JPL Open Repository
No abstract provided
Structural Thermal Optical Performance (STOP) analysis in SWOT and WFIRST
Mar 22, 2017
Chang, Zensheu, 2017, "Structural Thermal Optical Performance (STOP) analysis in SWOT and WFIRST", https://hdl.handle.net/2014/47872, Div 35 Lunch Time Seminar, Pasadena, California, March 22, 2017, JPL Open Repository
No abstract provided
IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph
Mar 3, 2017
Saini, Navtej; Anderson, Kevin; Chang, Zensheu; Gutt, Gary; Nemati, Bijan, 2017, "IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph", https://hdl.handle.net/2014/47870, ASME Verification and Validation 2017, Las Vegas, Nevada, May 3-5, 2017, JPL Open Repository
No abstract provided
The JPL's Electroactive Technologies Group and its NDEAA lab
Oct 10, 2016
Bar-Cohen, Yoseph; Badescu, Mircea; Bao, Xiaoqi; Chang, Zensheu; Lee, Hyeong Jae; Lih, Shyh-Shiuh; Sherrit, Stewart, 2016, "The JPL's Electroactive Technologies Group and its NDEAA lab", https://hdl.handle.net/2014/47160, Electroactive Technologies Group Meeting, Pasadena, California, Ocrtober 10, 2016, JPL Open Repository
No abstract provided
Requirements and design reference mission for the WFIRST-AFTA coronagraph instrument
Aug 9, 2015
Demers, Richard T.; Dekens, Frank; Calvet, Rob; Chang, Zensheu; Effinger, Robert; Ek, Eric; Hovland, Larry; Jones, Laura; Loc, Anthony; Nemati, Bijan; Noecker, Charley; Neville, Timothy; Pham, Hung; Rud, Mike; Tang, Hong; Villalvazo, Juan, 2015, "Requirements and design reference mission for the WFIRST-AFTA coronagraph instrument", https://hdl.handle.net/2014/45757, SPIE Optics + Photonics, San Diego, California, August 9-13, 2015, JPL Open Repository
This paper describes the instrument design and the flow down from science requirements to high level engineering requirements.
Percussive augmenter of rotary drills (PARoD)
Mar 11, 2013
Badescu, Mircea; Hasenoehrl, Jennifer; Bar-Cohen, Yoseph; Sherrit, Stewart; Bao, Xiaoqi; Chang, Zensheu; Ostlund, Patrick; Aldrich, Jack, 2013, "Percussive augmenter of rotary drills (PARoD)", https://hdl.handle.net/2014/44138, SPIE Smart Structures and NDE Symposium, San Diego, California, March 10-14, 2013, JPL Open Repository
Increasingly, NASA exploration mission objectives include sample acquisition tasks for in-situ analysis or for potential sample return to Earth. To address the requirements for samplers that could be operated at the conditions of the various bodies in the solar system, a piezoele...
Impact of acoustic standing waves on structural responses : Reverberant Acoustic Testing (RAT) vs. Direct Field Acoustic Testing (DFAT)
Oct 16, 2012
Kolaini, Ali R.; Doty, Benjamin; Chang, Zensheu, 2012, "Impact of acoustic standing waves on structural responses : Reverberant Acoustic Testing (RAT) vs. Direct Field Acoustic Testing (DFAT)", https://hdl.handle.net/2014/43012, Aerospace Testing Seminar, El Segundo, California, October 15-16, 2012., JPL Open Repository
Loudspeakers have been used for acoustic qualification of spacecraft, reflectors, solar panels, and other acoustically responsive structures for more than a decade. Limited measurements from some of the recent speaker tests used to qualify flight hardware have indicated significa...
Piezoelectric actuated drills developed at JPL and the Percussive Augmenter of Rotary Drills (PARoD)
Jun 28, 2012
Bar-Cohen, Yoseph; Sherrit, Stewart; Badescu, Mircea; Bao, Xiaoqi; Chang, Zensheu, 2012, "Piezoelectric actuated drills developed at JPL and the Percussive Augmenter of Rotary Drills (PARoD)", https://hdl.handle.net/2014/42442, Presentation to Schlumberger and Placidus, Pasadena, California, June 28, 2012, JPL Open Repository
No abstract provided
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