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2012 Conference Papers

[1] Strange, N., Landau, D., Hofer, R., Snyder, J. S., Randolph, T., Campagnola, S. et al., "Solar Electric Propulsion Gravity-Assist Tours for Jupiter Missions," AIAA Paper 2012-4518, August 2012.

[2] Brophy, J.R., Friedman, L., and Culick, F., “Asteroid Retrieval Feasibility,” IEEE Conference Proceedings, 2012.

[3] Brophy, J.R., et al., “Returning an Entire Near-Earth Asteroid in Support of Human Exploration Beyond Low-Earth Orbit,” GLEX-2012.11.1.7x12334, May 2012.

[4] Brophy, J., Culick, F., Dimotakis, P., and Friedman, L., “Project 5S: A Safe Stepping Stone into the Solar System,” IAC-12,A5,4,11,x13356, October 2012.

48th AIAA Joint Propulsion Conference
July 30 - August 1, 2012
Atlanta, GA

[1] Anderson, J. R., Ziemer, J. K., and Bulit, A., "Cesium Exposure Test of the Colloid Micro-Newton Thruster for the Lisa Pathfinder Mission," AIAA-2012-4293, July 2012.

[2] Brophy, J. and Oleson, S., "Spacecraft Conceptual Design for Returning Entire near-Earth Asteroids," AIAA-2012-4067, July 2012.

[3] Florenz, R., Liu, T. M., Gallimore, A. D., Kamhawi, H., Brown, D. L., Hofer, R. R. et al., "Electric Propulsion of a Different Class: The Challenges of Testing for Megawatt Missions," AIAA-2012-3942, July 2012.

[4] Garner, C. E., Rayman, M. D., Brophy, J. R., and Mikes, S. C., "In-Flight Operation of the Dawn Ion Propulsion System through the Preparations for Escape from Vesta," AIAA-2012-4182, July 2012.

[5] Goebel, D. M. and Chu, E., "High Current Lanthanum Hexaboride Hollow Cathode for High Power Hall Thrusters," AIAA-2012-4079, July 2012.

[6] Hofer, R. R., Goebel, D. M., Mikellides, I. G., and Katz, I., "Design of a Laboratory Hall Thruster with Magnetically Shielded Channel Walls, Phase II: Experiments," AIAA-2012-3788, July 2012.

[7] Mikellides, I. G., Katz, I., Hofer, R. R., and Goebel, D. M., "Design of a Laboratory Hall Thruster with Magnetically Shielded Channel Walls, Phase III: Comparison of Theory with Experiment," AIAA-2012-3789, July 2012.

[8] Snyder, J. S., Brophy, J., Hofer, R. R., Goebel, D. M., and Katz, I., "Experimental Investigation of a Direct-Drive Hall Thruster and Solar Array System at Power Levels up to 10 kW," AIAA-2012-4068, July 2012.

[9] Katz, I, "SEP-HV Solar Arrays and Spacecraft Interactions," Invited Presentation, 48th Joint Propulsion Conference, July 2012.

32nd International Electric Propulsion Conference
September 11-15, 2011
Wiesbaden, Germany

[1] Garner, C. E., Rayman, M. D., Brophy, J. R., Mikes, S. C., "The Dawn of Vesta Science", IEPC-2011-326, Presented at the 32nd International Electric Propulsion Conference, Wiesbaden, Germany, Sept. 11–15, 2011.

[2] Goebel, D.M., and Chu, E., “High Current Lanthanum Hexaboride Hollow Cathodes for High Power Hall Thrusters”, IEPC-2011-053, Presented at the 32nd International Electric Propulsion Conference, Wiesbaden, Germany, Sept. 11–15, 2011.

[3] Mikellides, I. G., Katz, I., Kamhawi, H., and Vannoord, J., “Numerical Simulations of a 20-kW Class Hall Thruster Using the Magnetic-Field-Aligned-Mesh Code Hall2De,” IEPC-2011-244, Presented at the 32nd International Electric Propulsion Conference, Wiesbaden, Germany, Sep. 11–15, 2011.

[4] Oh, D. and Landau, D. “A Simple Analytic Model for Interplanetary Low Thrust Trajectories,” IEPC-2011-010, Presented at the 32nd International Electric Propulsion Conference, Wiesbaden, Germany, Sept. 11–15, 2011.

[5] Polk, J.E., Kamhawi, H., Polzin, K., Brophy, J.R., Ziemer, J., Smith, T.D., and LaPointe, M. "An Overview of NASA's Electric Propulsion Programs, 2010-11," IEPC-2011-330, Presented at the 32nd International Electric Propulsion Conference, Wiesbaden, Germany, Sept. 11–15, 2011.

47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit
July 31 - Aug. 3, 2011
San Diego, CA

[1] Anderson, J. R. and Ziemer, J. K., "Colloid Thruster Contamination Modeling for the Lisa Pathfinder Mission," AIAA Paper 2011-5522, July 2011.

[2] Brophy, J. R., Gershman, R., Landau, D., Polk, J., Porter, C., Yeomans, D. et al., "Asteroid Return Mission Feasibility Study," AIAA Paper 2011-5565, July 2011.

[3] Brophy, J., Gershman, R., Strange, N., Landau, D. F., Merrill, R., and Kerslake, T., "300-kW Solar Electric Propulsion System Configuration for Human Exploration of near-Earth Asteroids," AIAA Paper 2011-5514, 2011.

[4] Garner, C. E., Rayman, M. D., Brophy, J. R., and Mikes, S. C., "In-Flight Operation of the Dawn Ion Propulsion System through Orbit Capture at Vesta," AIAA Paper 2011-5661, 2011.

[5] Hofer, R. R. and Randolph, T. M., "Mass and Cost Model for Selecting Thruster Size in Electric Propulsion Systems," AIAA Paper 2011-5518, July 2011.

[6] Katz, I., Mikellides, I. G., and Hofer, R. R., "Channel Wall Plasma Thermal Loads in Hall Thrusters with Magnetic Shielding," AIAA Paper 2011-6082, July 2011.

[7] Mikellides, I. G., Katz, I., and Hofer, R. R., "Design of a Laboratory Hall Thruster with Magnetically Shielded Channel Walls, Phase One: Numerical Simulations," AIAA Paper 2011-5809, July 2011.

[8] Randolph, T. M., Mcelrath, T. P., Collins, S. M., and Oh, D. Y., "Three-Axis Electric Propulsion Attitude Control System with a Dual-Axis Gimbaled Thruster," AIAA Paper 2011-5586, 2011.

[9] Shastry, R., Gallimore, A. D., and Hofer, R. R., "Experimental Characterization of the Near-Wall Plasma in a 6-kW Hall Thruster and Comparison to Simulation," AIAA Paper 2011-5589, July 2011.

[10] Strange, N., Merrill, R., Landau, D., Drake, B., Brophy, J., and Hofer, R., "Human Missions to Phobos and Deimos Using Combined Chemical and Solar Electric Propulsion," AIAA Paper 2011-5663, July 2011.

[11] Sultan, A., Koch, B., Mathers, A., and Hofer, R. R., "Development of a Modular Hall Thruster Power Converter," AIAA Paper 2011-5997, July 2011.

[12] Snyder, J. S., Randolph, T. M., Landau, D. F., Bury, K. M., Malone, S. P., and Hickman, T. A., "Power and Propulsion System Design for near-Earth Object Robotic Exploration," AIAA Paper 2011-5662, July 2011.

46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit

Coming soon.

45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit

Coming soon.

44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit
July 21-23, 2008
Hartford, CT

[1]           Benson, S. W., Patterson, M. J., and Snyder, J. S., "NEXT Ion Propulsion System Progress Towards Technology Readiness," AIAA Paper 2008-5285, July 2008.

[2]           Brophy, J. R., Garner, C. E., and Mikes, S., "Dawn Ion Propulsion System – Initial Checkout after Launch," AIAA Paper 2008-4917, July 2008.

[3]           Brophy, J. R., Polk, J. E., Randolph, T. M., and Dankanich, J. W., "Lifetime Qualification of Electric Thrusters for Deep-Space Missions," AIAA Paper 2008-5184, July 2008.

[4]           Capece, A. M., Polk, J. E., and Shepherd, J. E., "Current and Temperature Thresholds for Short-Term Oxygen Poisoning of Hollow Cathodes," AIAA Paper 2008-4813, July 2008.

[5]           Frisbee, R. H., "Optimization of Antimatter Rocket Performance," AIAA Paper 2008-4796, July 2008.

[6]           Garner, C. E., Brophy, J. R., Mikes, S. C., and Rayman, M. D., "In-Flight Operation of the Dawn Ion Propulsion System- the First Nine Months," AIAA Paper 2008-4916, July 2008.

[7]           Goebel, D. M., Polk, J. E., Wirz, R. E., Snyder, J. S., Mikellides, I. G. et al., "Qualification of Commercial XIPS Ion Thrusters for NASA Deep Space Missions," AIAA Paper 2008-4914, July 2008.

[8]           Grubisic, A. N., Polk, J. E., and Przybylowski, J. N., "Ion Energies in an Open-Diode Hollow Cathode Discharge," AIAA Paper 2008-5095, July 2008.

[9]           Hofer, R. R., Katz, I., Mikellides, I. G., Goebel, D. M., Jameson, K. K. et al., "Efficacy of Electron Mobility Models in Hybrid-PIC Hall Thruster Simulations," AIAA Paper 2008-4924, July 2008.

[10]         Lengyel, A. J. and Wirz, R. E., "Miniature Valve for Xenon Thrusters," AIAA Paper 2008-5085, July 2008.

[11]         Mikellides, I. G., Katz, I., Goebel, D. M., and Polk, J. E., "Assessments of Hollow Cathode Wear in the Xenon Ion Propulsion System (XIPS) by Numerical Analyses and Wear Tests," AIAA Paper 2008-5208, July 2008.

[12]         Oh, D. Y., Landau, D., Randolph, T. M., Timmerman, P., Chase, J. et al., "Analysis of System Margins on Deep Space Missions Utilizing Solar Electric Propulsion," AIAA Paper 2008-5286, July 2008.

[13]         Polk, J. E., Goebel, D. M., and Tighe, W., "Ongoing Wear Test of a XIPS 25-Cm Thruster Discharge Cathode," AIAA Paper 2008-4913, July 2008.

[14]         Polk, J. E., Mikellides, I. G., Katz, I., and Capece, A. M., "Tungsten and Barium Transport in the Internal Plasma of Hollow Cathodes," AIAA Paper 2008-5295, July 2008.

[15]         Przybylowski, J. N., Polk, J. E., and Shepherd, J. E., "Spatially Mapping the Ion Energy Distributions in Hollow Cathode Discharges," AIAA 2008-5206, July 2008.

[16]         Reid, B. M., Shastry, R., Gallimore, A. D., and Hofer, R. R., "Angularly-Resolved ExB Probe Spectra in the Plume of a 6-kW Hall Thruster," AIAA Paper 2008-5287, July 2008.

[17]         Shastry, R., Gallimore, A. D., and Hofer, R. R., "Interpretation of Wall-Mounted Probe Characteristics in Hall Thrusters," AIAA Paper 2008-4723, July 2008.

[18]         Shastry, R., Hofer, R. R., Reid, B. M., and Gallimore, A. D., "Method for Analyzing ExB Probe Spectra from Hall Thruster Plumes," AIAA Paper 2008-4647, July 2008.

[19]         Wirz, R. E., Anderson, J. R., Katz, I., and Goebel, D. M., "Time-Dependent Erosion of Ion Optics," AIAA Paper 2008-4529, July 2008.

[20]         Wirz, R. E., Katz, I., Goebel, D. M., and Anderson, J. R., "Electron Backstreaming Determination for Ion Thrusters," AIAA Paper 2008-4732, July 2008.

[21]         Ziemer, J. K., Randolph, T. M., Franklin, G. W., Hruby, V., Spence, D. et al., "Delivery of Colloid Micro-Newton Thrusters for the Space Technology 7 Mission," AIAA Paper 2008-4826, July 2008.

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