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Space Vehicle Design

• "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.

Launch Vehicles

• "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.

Software Integration

• "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

Optimal Control

• "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.

GN&C

• "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.

Trajectory Analysis

• "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.
• "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
• "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.

Attitude Control

• "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.

Optimization

• "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.

Soft Computing

• "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.

Rendezvous and Docking

• "An Optimal Docking Simulator", Paper presented at the ISS Service Vehicles Conference, Houston, April 26-28, 1999. Kumar, R., Seywald, H., and Mazanek, D.

Simulation

• "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.
• "An Optimal Docking Simulator", Paper presented at the ISS Service Vehicles Conference, Houston, April 26-28, 1999. Kumar, R., Seywald, H., and Mazanek, D.
• "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.

Advanced Visualization

• "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.
• "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.
• "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.

Software Development

• "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

Space Mission Design

• "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.

Space Station

• "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

Fluid Dynamics

• "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.

FEA

• "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.

Entry/Descent

• "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.

Hypersonics

• "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.

Aerodynamics

• "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.
• "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.

Structures

• "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.

MDO

• "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.

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