"Preliminary Dynamic Feasibility and Analysis of a Spherical, Wind-Driven (Tumbleweed) Martian Rover", AIAA Paper 2005-250, 43rd AIAA Aerospace Sciences Meeting, Reno, NV, January 2005. Flick, J. and Toniolo, M. "Descent Assisted Split Habitat (DASH) Lunar Lander Concept", IEEEAC paper #1384, 2008 IEEE Aerospace Conference, 1-8 March 2008, Big Sky, MT. Mazanek, D., Goodliff, K., and Cornelius, D. "Generalized Vehicle Performance Closure Model For Two-Stage-To-Orbit Launch Vehicles", AIAA 2004-1221, 42nd AIAA Aerospace Sciences Meeting 5 – 8 January 2004, Reno, NV. Qu, M., Gage, P., Sohn, J., Bradford, J., Starr, B. "Dynamics and Control of Attitude, Power, and Momentum for a Spacecraft Using Flywheels and Control Moment Gyroscopes", NASA/TP-2003-212178, April 2003. Roithmayr, C.M., Karlgaard, C.D., Kumar, R.R., Seywald, H., and Bose, D.M. "Integrated Power and Attitude Control for a Spacecraft with Flywheels and Control Moment Gyroscopes", Paper AAS 03-124, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Roithmayr, C., Karlgaard, C., Kumar, R.R. and Bose, D. "Parametric and Classical Resonance in Passive Satellite Aero-Stabilization", Journal of Spacecraft and Rockets, Vol. 33, No. 2, pp. 228-234, March-April, 1996. Kumar, R.R., Mazanek, D.D., and Heck, M.L. "Attitude Control and Momentum Management of Spacecraft based on a Sensitivity Observation", Paper no. 96-176, Sixth Annual AAS/AIAA Space Flight Mechanics Conference, Austin, Texas, February, 1996. Kumar, R.R., and Seywald, H "Gravity Anchoring for Passive Spacecraft Damping", Journal of Spacecraft and Rockets, Vol. 32, No. 5, pp. 925-926, September-October, 1995. Kumar, R.R. "Simulation and Shuttle Hitchhiker Validation of Passive Satellite Aero-Stabilization", Journal of Spacecraft and Rockets, Vol. 32, No. 5, pp. 806-811, September-October, 1995. Kumar, R.R., Mazanek, D.D., and Heck, M.L. "Space Station Freedom Contingency Reboost and Resupply Strategies", NASA TM no. 104169, October 1991. Troutman, P.A., Cruz, J.N., Heck, M.L., Mazanek, D.D., and Kumar, R.R. "Restructured Freedom Configuration Characteristics", NASA TM no. 104057, April 1991. Mazanek, D.D., Heck, M.L., Kumar, R.R., and Troutman, P.A. "Integrated Aerodynamic/Structural/Dynamic Analyses of Aircraft with Large Shape Changes, " J. A. Samareh, L. G. Horta, D. J. Piatak, A. R. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI.

"Constraint Force Equation Methodology for Modeling Mutli-Body Stage Separation Dynamics", AIAA Paper 2008-7039, AIAA Paper 2008-219, 46th AIAA Aerospace Sciences Meeting, Reno, NV, January 2008, Toniolo, M., Tartabini, P., Pamadi, B., and Hotchko, N. "Verification of a Constraint Force Equation Methodology for Modeling Stage Separation Dynamics", AIAA Paper 2008-7039, AIAA Modeling and Simulation Technologies Conference, Honolulu, HI, August 2008, Tartabini, P. V., Roithmayr, C. M., Toniolo, M. D., Karlgaard, C. D., and Pamadi, B. "Simulation and Analyses of Multi-Body Separation in Launch Vehicle Staging Environment", AIAA 2006-8033, Pamadi, Bandu N., Nathaniel J. Hotchko, Jamshid Samareh, Peter F. Covell, and Paul V. Tartabini "Simulation and Analysis of Stage Separation of Two-Stage Reusable Launch Vehicles", AIAA 2005-3247, Journal of Spacecraft and Rockets, Vol. 44, No. 1, January February 2007, page 66-80. Pamadi, Bandu N., Thomas A. Neirynck, Nathaniel J. Hotchko, Paul V. Tartabini, William I. Scallion, Kelly J. Murphy, and Peter F. Covell. "Simulation and Analyses of Staging Maneuvers of Next Generation Reusable Launch Vehicles", AIAA 2004-5185, Pamadi, Bandu N, Thomas A. Neirynck, Peter F. Covell, Nathaniel Hotchko, and David Bose. "The Launch Vehicle Language Data Model Applied to Analysis Tool Connectivity", AIAA 2004-1221, 42nd AIAA Aerospace Sciences Meeting 5 – 8 January 2004, Reno, NV. Vander Kam, J., Gage, P., Sohn, J.

"The Launch Vehicle Language Data Model Applied to Analysis Tool Connectivity", AIAA 2004-1221, 42nd AIAA Aerospace Sciences Meeting 5 – 8 January 2004, Reno, NV. Vander Kam, J., Gage, P., Sohn, J

"Desensitizing The Minimum-Fuel Powered Descent For Mars Pinpoint Landing", AAS 09-120, AAS Space Flight Mechanics Conference, Savannah, GA, February 8-12, 2009. Haijun Shen, Hans Seywald, Richard W. Powell "Desensitizing The Pin-Point Landing Trajectory On Mars", AIAA-2008-6943, AAS/AIAA Astrodynamics Specialist Conference, Honolulu, HI, August 18-21, 2008. Haijun Shen, Hans Seywald, Richard W. Powell "Desensitized Optimal Trajectories With Control Constraints", AAS 03-147, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Seywald, H. "Some Recent Developments in Computational Optimal Control", IMA Volumes in Mathematics and its Applications, Vol. 93, pp. 203-234, 1997. Seywald, H., and Kumar, R.R. "Fuel-Optimal Orbital Transfers for Variable Specific Impulse Powered Spacecraft", AAS 03-122, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Seywald, H., Roithmayr, C.M., Mazanek, D.D. and Troutman, P.A. "Planar High-Thrust and Low-thrust Orbital Transfers From Earth to Europa", Paper AAS 03-146, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Seywald, H., Roithmayr, C.M., Mazanek, D.D., Stillwagenand, F.H. and Troutman, P.A. "Concatenated Approach to Trajectory Optimization (CATO)", Journal of Guidance Control and Dynamics, Vol. 20, No. 3, pp. 617-620, May/June 1997. Seywald, H., and Kumar, R.R. "Method for Automatic Costate Calculation", Journal of Guidance, Control and Dynamics, Vol. 19, No. 6, pp. 1252-1261, November-December 1996. Seywald, H., and Kumar, R.R. "Dense-Sparse Discretization for Optimization and Real-time Guidance", Journal of Guidance, Control and Dynamics, Vol. 19, No. 2, pp. 501-503, March-April 1996. Kumar, R.R., and Seywald, H "Should Controls be Eliminated While Solving Optimal Control Problems Via Direct Methods?", Journal of Guidance, Control and Dynamics, Vol. 19, No. 2, pp. 418-423, March-April, 1996. Kumar, R.R., and Seywald, H. "Desensitized Optimal Trajectories", Advances in the Astronautical Sciences, Volume 93, Pages 103-116. AAS 96-107, AAS/AIAA Space Flight Mechanics Conference, Austin, TX, February 11-15, 1996. Hans Seywald, Renjith R. Kumar.

"Adaptive Huber-Based Filtering Using Projection Statistics: Application to Spacecraft Attitude Estimation", AIAA Paper 2008-7389, AIAA Guidance, Navigation, and Control Conference, Honolulu, HI, August 2008. Karlgaard, C. D. and Schaub, H. "Huber-Based Divided Difference Filtering", Journal of Guidance, Control, and Dynamics, Vol. 30, No. 3, 2007, pp. 885-891. Karlgaard, C. D. and Schaub, H. "Comparison of Several Nonlinear Filters for a Benchmark Tracking Problem", AIAA Paper 2006-6243, AIAA Guidance, Navigation, and Control Conference, Keystone, CO, August 2006. Karlgaard, C. D. and Schaub, H. "Robust Rendezvous Navigation in Elliptical Orbit", Journal of Guidance, Control, and Dynamics, Vol. 29, No. 2, 2006, Vol. 29, No. 2, 2006, pp. 495-499. Karlgaard, C. D. "The X-43A Hyper-X Mach 7 Flight 2 Guidance, Navigation, and Control Overview and Flight Test Results", AIAA Paper 2005-3275, AIAA/CIRA 13th International Space Planes and Hypersonic Systems and Technologies Conference, Capua, Italy, May 2005. Bahm, C., Baumann, E., Martin, J., Bose, D., Beck, R., and Strovers, B. "X-43A Mach 10 Mission Guidance and Control Updates, Rationale, and Flight Test Results", JANNAF 40th Combustion Subcommittee, 28th Airbreathing Propulsion Subcommittee, 22nd Propulsion Systems Hazards Subcommittee, and 4th Modeling and Simulation Subcommittee Joint Meeting, Charleston, SC, June 2005. Baumann, E., Bahm, C., Beck, R.E., and Strovers, B. "Minimum-Fuel Periodic Orbits In The Vicinity Of a Fixed Point On The Sun-Earth Line: The Planar Case", AAS 04-247, 14th AAS/AIAA Space Flight Mechanics Conference, Maui, HI, February 8-12, 2004. Haijun Shen, Renjith R. Kumar, Hans Seywald "Minimum-Fuel Periodic Orbits In The Vicinity Of a Fixed Point On The Sun-Earth Line: The Nonplanar Case", AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Providence, RI, August 2004. Haijun Shen, Renjith R. Kumar, Hans Seywald "Flight Control Laws for NASA’s Hyper-X Research Vehicle", AIAA Paper 1999-4124, AIAA Guidance, Navigation, and Control Conference, Portland, OR, August 1999. Davidson, J., Lallman, F., McMinn, J.D., Martin, J., Pahle, J., Stephenson, M., Selmon, J., and Bose, D. "Method for Automatic Costate Calculation", Journal of Guidance, Control and Dynamics, Vol. 19, No. 6, pp. 1252-1261, November-December 1996. Seywald, H., and Kumar, R.R. "Dense-Sparse Discretization for Optimization and Real-time Guidance", Journal of Guidance, Control and Dynamics, Vol. 19, No. 2, pp. 501-503, March-April 1996. Kumar, R.R., and Seywald, H "Should Controls be Eliminated While Solving Optimal Control Problems Via Direct Methods?", Journal of Guidance, Control and Dynamics, Vol. 19, No. 2, pp. 418-423, March-April, 1996. Kumar, R.R., and Seywald, H. "Genetic Algorithm Approach for Solving Optimal Control Problems with Linearly Appearing Controls", Journal of Guidance, Control and Dynamics, Vol. 18, No. 1, pp. 177-182, January-February 1995. Seywald, H., Kumar, R.R., and Deshpande.

"Desensitizing The Minimum-Fuel Powered Descent For Mars Pinpoint Landing", AAS 09-120, AAS Space Flight Mechanics Conference, Savannah, GA, February 8-12, 2009. Haijun Shen, Hans Seywald, Richard W. Powell "Desensitizing The Pin-Point Landing Trajectory On Mars", AIAA-2008-6943, AAS/AIAA Astrodynamics Specialist Conference, Honolulu, HI, August 18-21, 2008. Haijun Shen, Hans Seywald, Richard W. Powell "Constraint Force Equation Methodology for Modeling Mutli-Body Stage Separation Dynamics", AIAA Paper 2008-219, 46th AIAA Aerospace Sciences Meeting, Reno, NV, January 2008, Toniolo, M., Tartabini, P., Pamadi, B., and Hotchko, N. "Verification of a Constraint Force Equation Methodology for Modeling Stage Separation Dynamics", AIAA Paper 2008-7039, AIAA Modeling and Simulation Technologies Conference, Honolulu, HI, August 2008, Tartabini, P. V., Roithmayr, C. M., Toniolo, M. D., Karlgaard, C. D., and Pamadi, B. "NASA’s Planned Return to the Moon: Global Accesss and Anytime Return Requirement Implications on the Lunar Orbit Insertion Burns", AIAA Paper 2008-7508, AIAA/AAS Astrodynamics Specialists Conference, Honolulu, HI, August 2008, Garn, M., Qu, M., Chrone, J., Su, P., and Karlgaard, C. "Hyper-X Post-Flight Trajectory Reconstruction", Journal of Spacecraft and Rockets, Vol. 43, No. 1, 2006, pp. 105-115. Karlgaard, C., Tartabini, P.V., Blanchard, R.C., Kirsch, M., Toniolo, M.D. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI. "Mach 10 Stage Separation Analysis for the X43-A", AIAA Paper 2006-1038, 44th AIAA Aerospace Sciences Meeting, Reno, NV, January 2006. Tartabini, P.V., Bose, D.M., Thornblom, M.N., Lien, J.P., and Martin, J.G. "Stochastic Orbital Lifetime Analysis", 20th Annual AIAA/USU Conference on Small Satellites, Conference Proceedings and Presentations, Paper SSC06-VII-6, Goodliff, K., Cornelius, D., and Sasamoto, W., August 14-17, 2006, Logan, UT "Automated Sensitivity Analysis of the Hyper-X (X-43A) Separation Simulation", AIAA Paper 2004-4930, AIAA Modeling and Simlation Conference, Providence, RI, August 2004. Lien, J.P., Bose, D.M., and Martin, J.G. "Minimum-Fuel Periodic Orbits In The Vicinity Of a Fixed Point On The Sun-Earth Line: The Planar Case", AAS 04-247, 14th AAS/AIAA Space Flight Mechanics Conference, Maui, HI, February 8-12, 2004. Haijun Shen, Renjith R. Kumar, Hans Seywald "Minimum-Fuel Periodic Orbits In The Vicinity Of a Fixed Point On The Sun-Earth Line: The Nonplanar Case", AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Providence, RI, August 2004. Haijun Shen, Renjith R. Kumar, Hans Seywald "Fuel-Optimal Orbital Transfers for Variable Specific Impulse Powered Spacecraft", AAS 03-122, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Seywald, H., Roithmayr, C.M., Mazanek, D.D. and Troutman, P.A. "Planar High-Thrust and Low-thrust Orbital Transfers From Earth to Europa", Paper AAS 03-146, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Seywald, H., Roithmayr, C.M., Mazanek, D.D., Stillwagenand, F.H. and Troutman, P.A. "Hyper-X Stage Separation Trajectory Validation Studies", AIAA Paper 2003-5819, AIAA Modeling and Simulation Technologies Conference, Austin, TX, August 2003. Tartabini, P.V., Bose, D.M., McMinn, J.D., Martin, J.G., and Strovers, B.K. "Hyper-X Stage Separation – Simulation Development and Results", AIAA Paper 2001-1802, AIAA/NAL-NASDA-ISAS 10th International Space Planes and Hypersonic Systems and Technologies Conference, Kyoto, Japan, April 2001. Reubush, D.E., Martin, J.G., Robinson, J.S., Bose, D.M., and Strovers, B.K. "Concatenated Approach to Trajectory Optimization (CATO)", Journal of Guidance Control and Dynamics, Vol. 20, No. 3, pp. 617-620, May/June 1997. Seywald, H., and Kumar, R.R. "Desensitized Optimal Trajectories", Advances in the Astronautical Sciences, Volume 93, Pages 103-116. AAS 96-107, AAS/AIAA Space Flight Mechanics Conference, Austin, TX, February 11-15, 1996. Hans Seywald, Renjith R. Kumar.

"Integrated Power and Attitude Control with Spacecraft Flywheels and Control Moment Gyroscopes", Journal of Guidance, Control, and Dynamics, Vol. 27, No. 5, 2004, pp. 859-873. Roithmayr, C.M., Karlgaard, C.D., Kumar, R.R., and Bose, D.M. "Robust Reorientation and Power Controller Using Flywheels and Control Moment Gyroscopes", Journal of Guidance, Control, and Dynamics, Vol. 29, No. 1 2006, pp. 217-221. Karlgaard, C. D. "Dynamics and Control of Attitude, Power, and Momentum for a Spacecraft Using Flywheels and Control Moment Gyroscopes", NASA/TP-2003-212178, April 2003. Roithmayr, C.M., Karlgaard, C.D., Kumar, R.R., Seywald, H., and Bose, D.M. "Adaptive Huber-Based Filtering Using Projection Statistics: Application to Spacecraft Attitude Estimation", AIAA Paper 2008-7389, AIAA Guidance, Navigation, and Control Conference, Honolulu, HI, August 2008. Karlgaard, C. D. and Schaub, H. "Dynamics and Control of Attitude, Power, and Momentum for a Spacecraft Using Flywheels and Control Moment Gyroscopes", NASA/TP-2003-212178, April 2003. Roithmayr, C.M., Karlgaard, C.D., Kumar, R.R., Seywald, H., and Bose, D.M. "Integrated Power and Attitude Control for a Spacecraft with Flywheels and Control Moment Gyroscopes", Paper AAS 03-124, 13th AAS/AIAA Space Flight Mechanics Meeting, Puerto Rico, February 9-13, 2003. Roithmayr, C., Karlgaard, C., Kumar, R.R. and Bose, D. "Parametric and Classical Resonance in Passive Satellite Aero-Stabilization", Journal of Spacecraft and Rockets, Vol. 33, No. 2, pp. 228-234, March-April, 1996. Kumar, R.R., Mazanek, D.D., and Heck, M.L. "Attitude Control and Momentum Management of Spacecraft based on a Sensitivity Observation", Paper no. 96-176, Sixth Annual AAS/AIAA Space Flight Mechanics Conference, Austin, Texas, February, 1996. Kumar, R.R., and Seywald, H "Gravity Anchoring for Passive Spacecraft Damping", Journal of Spacecraft and Rockets, Vol. 32, No. 5, pp. 925-926, September-October, 1995. Kumar, R.R. "Simulation and Shuttle Hitchhiker Validation of Passive Satellite Aero-Stabilization", Journal of Spacecraft and Rockets, Vol. 32, No. 5, pp. 806-811, September-October, 1995. Kumar, R.R., Mazanek, D.D., and Heck, M.L. "Artificial Neural-Networks in Space Station Optimal Attitude Control", Journal Acta Astronautica, Vol. 35, No. 2/3. pp. 107-118, January/February, 1995. Kumar, R.R., Seywald, H., Deshpande, S.M., and Rahman, Z.

"Peer-to-Peer Refueling for Circular Satellite Constellations", AIAA Journal of Guidance, Control, and Dynamics, Vo. 28, No. 6, pp.1220-1230, 2005. Haijun Shen and Panagiotis Tsiotras "Genetic Algorithms and Equality Constrained Optimization Problems", Paper no. 95-3225, Proceedings of the AIAA GN&C Conference, Baltimore, Maryland, August, 7-10, 1995. Seywald, H., and Kumar, R.R. "Genetic Algorithm Approach for Solving Optimal Control Problems with Linearly Appearing Controls", Journal of Guidance, Control and Dynamics, Vol. 18, No. 1, pp. 177-182, January-February 1995. Seywald, H., Kumar, R.R., and Deshpande. "Air Data System Optimization Using a Genetic Algorithm", Paper no. 92-4466, Proceedings of the AIAA GN&C Conference, Hilton Head, South Carolina, August, 10-12, 1992. Deshpande, S.M., Kumar, R.R., Seywald, H., and Seimers, P.M. "An Optimal Docking Simulator", Paper presented at the ISS Service Vehicles Conference, Houston, April 26-28, 1999. Kumar, R., Seywald, H., and Mazanek, D.

"Genetic Algorithms and Equality Constrained Optimization Problems", Paper no. 95-3225, Proceedings of the AIAA GN&C Conference, Baltimore, Maryland, August, 7-10, 1995. Seywald, H., and Kumar, R.R. "Air Data System Optimization Using a Genetic Algorithm", Paper no. 92-4466, Proceedings of the AIAA GN&C Conference, Hilton Head, South Carolina, August, 10-12, 1992. Deshpande, S.M., Kumar, R.R., Seywald, H., and Seimers, P.M. "Genetic Algorithm Approach for Solving Optimal Control Problems with Linearly Appearing Controls", Journal of Guidance, Control and Dynamics, Vol. 18, No. 1, pp. 177-182, January-February 1995. Seywald, H., Kumar, R.R., and Deshpande.

"Optimal Rendezvous and Docking Simulator for Elliptical Orbits", AAS Paper 07-210, AAS/AIAA Space Flight Mechanics Meeting, Sedona, AZ, January 2007. Shen, H. and Karlgaard, C.D. "Robust Rendezvous Navigation in Elliptical Orbit", Journal of Guidance, Control, and Dynamics, Vol. 29, No. 2, 2006, Vol. 29, No. 2, 2006, pp. 495-499. Karlgaard, C. D. "An Optimal Docking Simulator", Paper presented at the ISS Service Vehicles Conference, Houston, April 26-28, 1999. Kumar, R., Seywald, H., and Mazanek, D.

"Constraint Force Equation Methodology for Modeling Mutli-Body Stage Separation Dynamics", AIAA Paper 2008-7039, AIAA Paper 2008-219, 46th AIAA Aerospace Sciences Meeting, Reno, NV, January 2008, Toniolo, M., Tartabini, P., Pamadi, B., and Hotchko, N. "Verification of a Constraint Force Equation Methodology for Modeling Stage Separation Dynamics", AIAA Paper 2008-7039, AIAA Modeling and Simulation Technologies Conference, Honolulu, HI, August 2008, Tartabini, P. V., Roithmayr, C. M., Toniolo, M. D., Karlgaard, C. D., and Pamadi, B. "Optimal Rendezvous and Docking Simulator for Elliptical Orbits", AAS Paper 07-210, AAS/AIAA Space Flight Mechanics Meeting, Sedona, AZ, January 2007. Shen, H. and Karlgaard, C.D. "Simulation and Analyses of Multi-Body Separation in Launch Vehicle Staging Environment", AIAA 2006-8033, Pamadi, Bandu N., Nathaniel J. Hotchko, Jamshid Samareh, Peter F. Covell, and Paul V. Tartabini "Hyper-X Post-Flight Trajectory Reconstruction", Journal of Spacecraft and Rockets, Vol. 43, No. 1, 2006, pp. 105-115. Karlgaard, C., Tartabini, P.V., Blanchard, R.C., Kirsch, M., Toniolo, M.D. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI. "Simulation and Analysis of Stage Separation of Two-Stage Reusable Launch Vehicles", AIAA 2005-3247, Journal of Spacecraft and Rockets, Vol. 44, No. 1, January February 2007, page 66-80. Pamadi, Bandu N., Thomas A. Neirynck, Nathaniel J. Hotchko, Paul V. Tartabini, William I. Scallion, Kelly J. Murphy, and Peter F. Covell. "Automated Sensitivity Analysis of the Hyper-X (X-43A) Separation Simulation", AIAA Paper 2004-4930, AIAA Modeling and Simlation Conference, Providence, RI, August 2004. Lien, J.P., Bose, D.M., and Martin, J.G. "Simulation and Analyses of Staging Maneuvers of Next Generation Reusable Launch Vehicles", AIAA 2004-5185, Pamadi, Bandu N, Thomas A. Neirynck, Peter F. Covell, Nathaniel Hotchko, and David Bose. "Hyper-X Stage Separation Trajectory Validation Studies", AIAA Paper 2003-5819, AIAA Modeling and Simulation Technologies Conference, Austin, TX, August 2003. Tartabini, P.V., Bose, D.M., McMinn, J.D., Martin, J.G., and Strovers, B.K. "Space Operations Analysis Using the Synergistic Engineering Environment", AIAA presentation in conjunction with the World Space Congress, October, 2002, Angster, S. and Brewer, L. "Hyper-X Stage Separation – Simulation Development and Results", AIAA Paper 2001-1802, AIAA/NAL-NASDA-ISAS 10th International Space Planes and Hypersonic Systems and Technologies Conference, Kyoto, Japan, April 2001. Reubush, D.E., Martin, J.G., Robinson, J.S., Bose, D.M., and Strovers, B.K. "International Space Station Immersive Accommodation Environment", 38th AIAA Aerospace Sciences Meeting & Exhibit, Reno, NV, 2000. Angster, S., Garn, M., Mazanek, D., Johns, B., and Troutman, P. "An Optimal Docking Simulator", Paper presented at the ISS Service Vehicles Conference, Houston, April 26-28, 1999. Kumar, R., Seywald, H., and Mazanek, D.

"Architecture for Virtual Prototyping of Complex Mechanical Assemblies", Proceedings of 1998 ASME Design Engineering Technical Conferences, Atlanta, September 1998. Jayaram, S., Angster, S., Gowda, S., and Jayaram, U. "Space Operations Analysis Using the Synergistic Engineering Environment", AIAA presentation in conjunction with the World Space Congress, October, 2002, Angster, S. and Brewer, L. "International Space Station Immersive Accommodation Environment", 38th AIAA Aerospace Sciences Meeting & Exhibit, Reno, NV, 2000. Angster, S., Garn, M., Mazanek, D., Johns, B., and Troutman, P. "Interoperability of Assembly Analysis Applications through the use of the Open Assembly Design Environment", Proceedings of 1998 ASME Design Engineering Technical Conferences, Atlanta, September 1998. Angster, S., Lyons, K., Hart, P., and Jayaram, S. "Virtual Environments for Design and Manufacturing", Book Chapter in Concurrent Engineering – An Agenda for Success, Research Studies Press, November 1997. Jayaram, S., Angster, S., and Lyons, K. "Architecture for Flexible Virtual Manufacturing Environments", International Journal of Virtual Reality, October 1997. Angster, S., and Jayaram, S. "Case Studies on the Use of Virtual Reality for an Integrated Design and Manufacturing System", Proceedings of the 1997 ASME Design Engineering Technical Conferences,Sacramento, CA, September 1997. Angster, S., Jayaram, S., and Hutton, D. "Simulation and Analyses of Staging Maneuvers of Next Generation Reusable Launch Vehicles", AIAA 2004-5185, Pamadi, Bandu N, Thomas A. Neirynck, Peter F. Covell, Nathaniel Hotchko, and David Bose. "Space Operations Analysis Using the Synergistic Engineering Environment", AIAA presentation in conjunction with the World Space Congress, October, 2002, Angster, S. and Brewer, L. "International Space Station Immersive Accommodation Environment", 38th AIAA Aerospace Sciences Meeting & Exhibit, Reno, NV, 2000. Angster, S., Garn, M., Mazanek, D., Johns, B., and Troutman, P. "Stochastic Orbital Lifetime Analysis", 20th Annual AIAA/USU Conference on Small Satellites, Conference Proceedings and Presentations, Paper SSC06-VII-6, Goodliff, K., Cornelius, D., and Sasamoto, W., August 14-17, 2006, Logan, UT

"NASA’s Planned Return to the Moon: Global Accesss and Anytime Return Requirement Implications on the Lunar Orbit Insertion Burns", AIAA Paper 2008-7508, AIAA/AAS Astrodynamics Specialists Conference, Honolulu, HI, August 2008, Garn, M., Qu, M., Chrone, J., Su, P., and Karlgaard, C. "Peer-to-Peer Refueling for Circular Satellite Constellations", AIAA Journal of Guidance, Control, and Dynamics, Vo. 28, No. 6, pp.1220-1230, 2005. Haijun Shen and Panagiotis Tsiotras "Space Operations Analysis Using the Synergistic Engineering Environment", AIAA presentation in conjunction with the World Space Congress, October, 2002, Angster, S. and Brewer, L. "Orbiter Utilization as an ACRV", NASA TM no. 102700, June 1990. Cruz, J.N., Heck, M.L., Kumar, R.R., Mazanek, D.D.

"International Space Station Immersive Accommodation Environment", 38th AIAA Aerospace Sciences Meeting & Exhibit, Reno, NV, 2000. Angster, S., Garn, M., Mazanek, D., Johns, B., and Troutman, P. "Space Station Freedom Contingency Reboost and Resupply Strategies", NASA TM no. 104169, October 1991. Troutman, P.A., Cruz, J.N., Heck, M.L., Mazanek, D.D., and Kumar, R.R. "Restructured Freedom Configuration Characteristics", NASA TM no. 104057, April 1991. Mazanek, D.D., Heck, M.L., Kumar, R.R., and Troutman, P.A. "Stochastic Orbital Lifetime Analysis", 20th Annual AIAA/USU Conference on Small Satellites, Conference Proceedings and Presentations, Paper SSC06-VII-6, Goodliff, K., Cornelius, D., and Sasamoto, W., August 14-17, 2006, Logan, UT

"Re- Entry Aeroheating Analysis of Tile- Repair Augers for the Shuttle Orbiter,", A. Mazaheri, Analytical Mechanics Associates (AMA) Inc., Hampton, VA; W. Wood, NASA Langley Research Center, Hampton, VA, at 37th AIAA Fluid Dynamics Conference, AIAA-2007-4148, Miami, FL "Understanding Hypersonic, Unstructured- Grid Issues through Structured Grids,", A. Mazaheri, Analytical Mechanics Associates Inc., Hampton, VA; B. Kleb, NASA Langley Research Center, Hampton, VA, at 37th AIAA Fluid Dynamics Conference, AIAA-2007-4148, Miami, FL. "Erratum on Low-Density Aerodynamics for the Inflatable Reentry Vehicle Experiment,", J.N. Moss, C.E. Glass, B.R. Hollis, NASA Langley Research Center, and J.W. Van Norman, Analytical Mechanics Associates, Inc., Hampton, VA, Journal of Spacecraft and Rockets, Vol. 44, No. 2, March-April 2007. "Integrated Aerodynamic/Structural/Dynamic Analyses of Aircraft with Large Shape Changes,", J. A. Samareh, L. G. Horta, D. J. Piatak, A. R. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI.

"Re- Entry Aeroheating Analysis of Tile- Repair Augers for the Shuttle Orbiter,", A. Mazaheri, Analytical Mechanics Associates (AMA) Inc., Hampton, VA; W. Wood, NASA Langley Research Center, Hampton, VA, at 37th AIAA Fluid Dynamics Conference, AIAA-2007-4148, Miami, FL "Understanding Hypersonic, Unstructured- Grid Issues through Structured Grids,", A. Mazaheri, Analytical Mechanics Associates Inc., Hampton, VA; B. Kleb, NASA Langley Research Center, Hampton, VA, at 37th AIAA Fluid Dynamics Conference, AIAA-2007-4148, Miami, FL.

"Desensitizing The Minimum-Fuel Powered Descent For Mars Pinpoint Landing", AAS 09-120, AAS Space Flight Mechanics Conference, Savannah, GA, February 8-12, 2009. Haijun Shen, Hans Seywald, Richard W. Powell "Desensitizing The Pin-Point Landing Trajectory On Mars", AIAA-2008-6943, AAS/AIAA Astrodynamics Specialist Conference, Honolulu, HI, August 18-21, 2008. Haijun Shen, Hans Seywald, Richard W. Powell "Re- Entry Aeroheating Analysis of Tile- Repair Augers for the Shuttle Orbiter,", A. Mazaheri, Analytical Mechanics Associates (AMA) Inc., Hampton, VA; W. Wood, NASA Langley Research Center, Hampton, VA, at 37th AIAA Fluid Dynamics Conference, AIAA-2007-4148, Miami, FL.

"Computational Aeroheating Analysis of Wing Leading Edge Plug Models with Comparison to Wind Tunnel Experiments,", A. Mazaheri, Analytical Mechanics Associates Inc., Hampton, VA; NASA Johnson Space Center, Aeroscience and Flight Mechanics Division, Houston, Texas, EG-SS-07-18, 2007. "Flight Boundary Layer Tool for Volume and Surface Probe (FBLT-VASP),", A. Mazaheri, Analytical Mechanics Associates Inc., Hampton, VA; NASA Johnson Space Center, Aeroscience and Flight Mechanics Division, Houston, Texas, EG-SS-07-12, 2007. "Requirement Verification for Viscous-CFD Space Shuttle Orbiter Boundary Layer Data and Probe Software,", William A. Wood, .., Ali R. Mazaheri, and ..., NASA Johnson Space Center, Houston, Texas, EG-SS-07-11, 2007. "Viscous-CFD Space Shuttle Orbiter Boundary Layer Data and Probe Software,", William A. Wood, .., Ali R. Mazaheri, and ..., NASA Johnson Space Center, Aeroscience and Flight Mechanics Division, Houston, Texas, EG-SS-07-10, 2007. "Computational Aerothermodynamic Analysis of the Space Shuttle Orbiter Tile Overlay Repair with Different Geometries,", A. Mazaheri, Analytical Mechanics Associates Inc., Hampton, VA; NASA Johnson Space Center, Aeroscience and Flight Mechanics Division, Houston, Texas, EG-SS-07-1, 2007. "CFD Analysis of Tile-Repair Augers for the Shuttle Orbiter Re-Entry Aeroheating,", Ali R. Mazaheri, NASA-CR2007-214858, Langley Research Center, 2007. "Re-Entry Aeroheating Analysis of Tile-Repair Augers for the Shuttle Orbiter,", Ali R. Mazaheri, and Bill Wood, AIAA-2007-4148. "Exploring Hypersonic, Unstructured Grid Issues through Structured Grids,", Ali R. Mazaheri, and Bil Kleb, AIAA-2007-4462. "Understanding Hypersonic, Unstructured- Grid Issues through Structured Grids,", A. Mazaheri, Analytical Mechanics Associates Inc., Hampton, VA; B. Kleb, NASA Langley Research Center, Hampton, VA, at 37th AIAA Fluid Dynamics Conference, AIAA-2007-4148, Miami, FL. "Hyper-X Post-Flight Trajectory Reconstruction", Journal of Spacecraft and Rockets, Vol. 43, No. 1, 2006, pp. 105-115. Karlgaard, C., Tartabini, P.V., Blanchard, R.C., Kirsch, M., Toniolo, M.D. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI. "Mach 10 Stage Separation Analysis for the X43-A", AIAA Paper 2006-1038, 44th AIAA Aerospace Sciences Meeting, Reno, NV, January 2006. Tartabini, P.V., Bose, D.M., Thornblom, M.N., Lien, J.P., and Martin, J.G. "The X-43A Hyper-X Mach 7 Flight 2 Guidance, Navigation, and Control Overview and Flight Test Results", AIAA Paper 2005-3275, AIAA/CIRA 13th International Space Planes and Hypersonic Systems and Technologies Conference, Capua, Italy, May 2005. Bahm, C., Baumann, E., Martin, J., Bose, D., Beck, R., and Strovers, B. "X-43A Mach 10 Mission Guidance and Control Updates, Rationale, and Flight Test Results", JANNAF 40th Combustion Subcommittee, 28th Airbreathing Propulsion Subcommittee, 22nd Propulsion Systems Hazards Subcommittee, and 4th Modeling and Simulation Subcommittee Joint Meeting, Charleston, SC, June 2005. Baumann, E., Bahm, C., Beck, R.E., and Strovers, B. "Automated Sensitivity Analysis of the Hyper-X (X-43A) Separation Simulation", AIAA Paper 2004-4930, AIAA Modeling and Simlation Conference, Providence, RI, August 2004. Lien, J.P., Bose, D.M., and Martin, J.G. "Hyper-X Stage Separation Trajectory Validation Studies", AIAA Paper 2003-5819, AIAA Modeling and Simulation Technologies Conference, Austin, TX, August 2003. Tartabini, P.V., Bose, D.M., McMinn, J.D., Martin, J.G., and Strovers, B.K. "Hyper-X Stage Separation – Simulation Development and Results", AIAA Paper 2001-1802, AIAA/NAL-NASDA-ISAS 10th International Space Planes and Hypersonic Systems and Technologies Conference, Kyoto, Japan, April 2001. Reubush, D.E., Martin, J.G., Robinson, J.S., Bose, D.M., and Strovers, B.K. "Flight Control Laws for NASA’s Hyper-X Research Vehicle", AIAA Paper 1999-4124, AIAA Guidance, Navigation, and Control Conference, Portland, OR, August 1999. Davidson, J., Lallman, F., McMinn, J.D., Martin, J., Pahle, J., Stephenson, M., Selmon, J., and Bose, D.

"Simulation and Analysis of Stage Separation of Two-Stage Reusable Launch Vehicles", AIAA 2005-3247, Journal of Spacecraft and Rockets, Vol. 44, No. 1, January February 2007, page 66-80. Pamadi, Bandu N., Thomas A. Neirynck, Nathaniel J. Hotchko, Paul V. Tartabini, William I. Scallion, Kelly J. Murphy, and Peter F. Covell. "Erratum on Low-Density Aerodynamics for the Inflatable Reentry Vehicle Experiment,", J.N. Moss, C.E. Glass, B.R. Hollis, NASA Langley Research Center, and J.W. Van Norman, Analytical Mechanics Associates, Inc., Hampton, VA, Journal of Spacecraft and Rockets, Vol. 44, No. 2, March-April 2007. "Integrated Aerodynamic/Structural/Dynamic Analyses of Aircraft with Large Shape Changes,", J. A. Samareh, L. G. Horta, D. J. Piatak, A. R. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI. "Simulation and Analyses of Multi-Body Separation in Launch Vehicle Staging Environment", AIAA 2006-8033, Pamadi, Bandu N., Nathaniel J. Hotchko, Jamshid Samareh, Peter F. Covell, and Paul V. Tartabini

"Integrated Aerodynamic/Structural/Dynamic Analyses of Aircraft with Large Shape Changes", J. A. Samareh, L. G. Horta, D. J. Piatak, A. R. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI.

"Integrated Aerodynamic/Structural/Dynamic Analyses of Aircraft with Large Shape Changes", J. A. Samareh, L. G. Horta, D. J. Piatak, A. R. McGowan, NASA Langley Research Center, P. Chwalowski, Analytical Mechanics Associates, Inc., Hampton, VA, at 3rd AIAA MDO Conference, AIAA-2007-2346, Honolulu, HI.

"Transport Deposition in a Demonstration-Scale Filter Vessel with and without Ash Bridging", Ali R. Mazaheri, Ahmadi,G. and Gamwo,I., Adv. Powder Tech. Journal, 2007 "Aerosol Transport and Deposition Analysis in a Demonstration-Scale Hot-Gas Filter Vessel with Alternate Designs", Ali R. Mazaheri, and Goodarz Ahmadi, 17(6), Adv. Powder Tech. Journal, pp. 623-639, 2006 "Hot-Gas Flow and Particle Transport and Deposition in a Candle Filter Vessel", Ali R. Mazaheri, Goodarz Ahmadi and Issac K. Gamwo, Adv. Powder Tech. Journal, 14(1), 2003

"Uniformity of Fluid Flow Velocity within Hollow Fiber Membranes of Blood Oxygenation Devices", Ali R. Mazaheri, Ahmadi,G. and Gamwo,I.,Artificial Organs, 30(1), 10-15, 2006