6,741 to 6,750 of 6,770 Results
Apr 16, 2001
Salama, Moktar; White, C.; Leland, R., 2001, "Ground demonstration of a spinning solar sail deployment concept", https://hdl.handle.net/2014/39432, 42nd SDM AIAA Conference, Seattle, Washington, April 16, 2001., JPL Open Repository
The dynamics of spin-deployment of a subscale solar sail concept (2.5-micron thick mylar film, 80-cm diameter) is investigated herein experimentally in the laboratory environment. To gain insight into the practicality of the deployment scheme, a tether configuration emulating the... |
Apr 16, 2001
Bar-Cohen, Yoseph, 2001, "Electroactive polymers as artificial muscles - reality and challenges", https://hdl.handle.net/2014/39305, Structure, Structural, Dynamics and Materials Conference, Seattle, Washington, April 16-19, 2001., JPL Open Repository
For many years, electroactive polymers (EAP) received reIatively little attention due to the small number of available materials and their limited actuation capability. The recent emergence of EAP materials with large displacement response changed the potential capability and par... |
Apr 10, 2001
Chien, Steve; Doubleday, Joshua; Mclaren, David; Tran, Daniel; Khunboa, Chatchai; Leelapatra, Watis; Pergamon, Vichain; Tanpipat, Veerachai; Chitradon, Royal; Boonya-aroonnet, Surajate; Thanapakpawin, Porranee; Meethome, Amara; Raghavendra, Cauligi (Raghu); Mandl, Daniel, 2001, "Using multiple space assests with In-situ measurements to track flooding in Thailand.", https://hdl.handle.net/2014/41861, International Sysmposium on the Remote Sensing of the Environment, Sydney, Australia, April 10, 2011., JPL Open Repository
Increasing numbers of space assets can enable coordinated measurements of flooding phenomena to enhance tracking of extreme events. We describe the use of space and ground measurements to target further measurements as part of a flood monitoring system in Thailand. We utilize rap... |
Mar 26, 2001
Forrest, David J.; Statman, Joseph I., 2001, "Challenges and lessons learned in the application of autonomy to space operations", https://hdl.handle.net/2014/39452, AAAI Spring Symposium, Stanford, California, March 26-28, 2001., JPL Open Repository
NASA’s Space Operations Management Office (SOMO) is working toward a goal of providing an integrated infrastructure of mission and data services for space missions undertaken by NASA enterprises. A significant portion of this effort is focused on reducing the cost of these servic... |
Mar 12, 2001
Beegle, Luther W.; Kanik, Isik, 2001, "A high pressure hollow cathode ionization source for in-situ detection of organic molecules on Mars.", https://hdl.handle.net/2014/39259, LPSC XXXII, Houston, Texas, March 12-16, 2001, JPL Open Repository
We have designed, constructed and characterized a new high-pressure (1-5 Torr) hollow cathode discharge source (HCDSj that can be utilized as an ionizer in a wide variety of mass analyzers. It is able to function under ambient Martian atmospheric conditions without modification. |
Mar 5, 2001
Bar-Cohen, Yoseph; Mavroidis, Constantinos; Bouzit, Mourad; Dolgin, Benjamin; Harm, Deborah L.; Kopchok, George E.; White, Rodney, 2001, "Virtual reality robotic telesurgery simulations using MEMICA haptic system", https://hdl.handle.net/2014/39307, 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001., JPL Open Repository
The authors conceived a haptic mechanism called MEMICA (Remote Mechanical Mirroring using Controlled stiffness and Actuators) that can enable the design of high dexterity, rapid response, and large workspace haptic system. The development of a novel MEMICA gloves and virtual real... |
Mar 5, 2001
Bar-Cohen, Yoseph; Chang, Zensheu, 2001, "Piezoelectrically actuated miniature peristaltic pump.", https://hdl.handle.net/2014/39262, 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001., JPL Open Repository
There is a range of NASA experiments, instruments and applications where miniature pumps are needed. To address such needs, a piezoelectrically actuated miniature pump is being developed. This pump employs a novel volume displacing mechanism using flexural traveling waves that ac... |
Mar 5, 2001
Hanson, D.; Pioggia, G.; Bar-Cohen, Yoseph; de Rossi, D., 2001, "Androids: application of EAP as artificial muscles to entertainment industry", https://hdl.handle.net/2014/39304, 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001., JPL Open Repository
The classic movie Metropolis (1926), which is nowadays considered a cinema milestone, has shown the possibility to build robots called androids that are science and fiction run together to realize a dream: the human-like robot. In that movie, Dr. Rotwang transforms a simple and c... |
Mar 5, 2001
Bar-Cohen, Yoseph; Sherrit, Stewart; Dolgin, Benjamin P.; Bao, Xiaqi; Chang, Zensheu; Pal, Dharmendra S.; Du, Shu; Peterson, Thomas, 2001, "Ultrasonic/sonic drilling/coring (USDC) for planetary applications", https://hdl.handle.net/2014/39263, 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001., JPL Open Repository
One of the major limitations of sampling on Mars and other low gravity environments is the need for high axial force when using conventional drilling. To address this limitation an ultrasonic/sonic drilling/coring (USDC) mechanism has been developed that employs an ultrasonic hor... |
Mar 5, 2001
Bar-Cohen, Yoseph; Bao, Xiaoqi; Dolgin, Benjamin; Marzwell, Neville, 2001, "Residue detection for real-time removal of paint from metallic surfaces", https://hdl.handle.net/2014/39308, 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001., JPL Open Repository
Paint stripping from large steel ships and other metallic surfaces is a major issue in the maintenance and refurbishing of structures, and environmental concerns are greatly limiting the possible options. As a result, waterjet with water recycling has become the leading form of p... |
