Conference Publications

Conference Papers and Presentations


1. Longuski, J.M., “Solution of Euler’s Equations of Motion and Eulerian Angles for Near Symmetric Rigid Bodies Subject to Constant Moments,” AIAA Paper No. 80-1642, AIAA/AAS Astrodynamics Conference, Danvers, Massachusetts, August 11-13, 1980.

2. Longuski, J.M., “Comments on the Leimanis Solution of Self-Excited Rigid Body,” Paper No. 81-104, AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, Nevada, August 3-5, 1981.

3. Longuski, J.M., “Galileo Maneuver Analysis,” Paper No. 81-137, AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, Nevada, August 3-5, 1981.

4. Longuski, J.M., “Simulation of the Galileo Spacecraft Axial Delta-V Algorithm,” Proceedings of the 10th IMAC (International Association for Mathematics and Computers in Simulation) World Congress on System Simulation and Scientific Computation, Volume 3, page 235, Montreal, Canada, August 8-13, 1982.

5. Longuski, J.M. and Koenig, W., “A Survey of Nongravitational Forces and Space Environmental Torques with Applications to the Galileo Spacecraft,” AIAA Paper No. 82-1457, AIAA/AAS Astrodynamics Conference, San Diego, California, August 9-11, 1982.

6. Longuski, J.M. and Kia, T., “A Parametric Study of the Behavior of the Angular Momentum Vector During Spin Rate Changes of Rigid Body Spacecraft,” AIAA Paper No. 82-1467, AIAA/AAS Astrodynamics Conference, San Diego, California, August 9-11, 1982.

7. Hintz, G.R. and Longuski, J.M., “Mission Analysis for the Delivery of a Spinning Probe to Jupiter,” AAS Paper 83-312, AAS/AIAA Astrodynamics Specialist Conference, Lake Placid, New York, August 22-25, 1983.

8. Longuski, J.M., Kia, T., and Breckenridge, W.G., “Annihilation of Angular Momentum Drift During Spinning-Up and Thrusting Maneuvers of Rigid Bodies,” AAS Paper No. 83-408, AAS/AIAA Astrodynamics Specialist Conference, Lake Placid, New York, August 22-25, 1983.

9. Vinh, N.X., Johannesen, J.R., Longuski, J.M., and Hanson, J.M., “Second-Order Analytic Solution for Aerocapture and Ballistic Fly-Through Trajectories,” AAS Paper No. 83-415, AAS/AIAA Astrodynamics Specialist Conference, Lake Placid, New York, August 22-25, 1983.

10. Longuski, J.M. and Myers, M.R., “Analytic Models of Mapping Coverage of the Galilean Satellites,” AIAA Paper 84-1998, AIAA/AAS Astrodynamics Conference, Seattle, Washington, August 20-22, 1984.

11. Klumpe, E.W. and Longuski, J.M., “Secular Solution for Delta-V During Spin Rate Change Maneuvers of Rigid Body Spacecraft,” AIAA Paper 84-2011, AIAA/AAS Astrodynamics Conference, Seattle, Washington, August 20-22, 1984.

12. Kia, T. and Longuski, J.M., “Error Analysis of Analytic Solutions for Self-Excited Near Symmetric Rigid Bodies: A Numerical Study,” AIAA Paper 84-2018, AIAA/AAS Astrodynamics Conference, Seattle, Washington, August 20-22, 1984.

13. Longuski, J.M. and Wolf, A.A., “The Galileo Orbital Tour for the 1986 Launch Opportunity,” AIAA Paper 86-2006-CP, AIAA/AAS Astrodynamics Conference, Williamsburg, Virginia, August 18-20, 1986.

14. Friedlander, A., Niehoff, J., Byrnes, D., and Longuski, J.M., “Circulating Transportation Orbits between Earth and Mars,” AIAA Paper 86-2009-CP, AIAA/AAS Astrodynamics Conference, Williamsburg, Virginia, August 18-20, 1986.

15. Longuski, J.M., “An Analytic-Geometric Model of the Effect of Spherically Distributed Injection Errors for the Galileo and Ulysses Spacecraft,” AAS Paper 87-487, AAS/AIAA Astrodynamics Specialist Conference, Kalispell, Montana, August 10-13, 1987.

16. Longuski, J.M. and McRonald, A.D., “An Analytic-Geometric Model of the Effect of Spherically Distributed Injection Errors for Galileo and Ulysses Spacecraft: The Multi-Stage Problem,” AIAA Paper 88-4245-CP, AIAA/AAS Astrodynamics Conference, Minneapolis, Minnesota, August 15-17, 1988.

17. Longuski, J.M., Campbell, R.S., and Klumpe, E.W., “Error Analysis for Pulsed Maneuvers of a Dual-Spin Spacecraft,” AAS Paper 89-396, AAS/AIAA Astrodynamics Specialist Conference, Stowe, Vermont, August 7-10, 1989.

18. Puig-Suari, J. and Longuski, J.M., “Modeling and Analysis of Orbiting Tethers in an Atmosphere,” AIAA Paper 90-2897, AIAA/AAS Astrodynamics Conference, Portland, Oregon, August 20-22, 1990.

19. Williams, S.N. and Longuski, J.M., “Automated Design of Multiple Encounter Gravity-Assist Trajectories,” AIAA Paper 90-2982, AIAA/AAS Astrodynamics Conference, Portland, Oregon, August 20-22, 1990.

20. Longuski, J.M., “Real Solutions for the Attitude Motion of a Self-Excited Rigid Body,” IAF Paper 90-317, 41st Congress of the International Astronautical Federation, Dresden, Germany, October 6-12, 1990.

21. Longuski, J.M. and Tsiotras, P., “Attitude Motion of a Rigid Body Subject to Polynomial Torques,” AAS Paper 91-405, AAS/AIAA Astrodynamics Conference, Durango, Colorado, August 19-22, 1991.

22. Tsiotras, P. and Longuski, J.M., “Analytic Solutions for the Attitude Motion of Spinning Rigid Bodies Subject to Periodic Torques,” AAS Paper 91-404, AAS/AIAA Astrodynamics Conference, Durango, Colorado, August 19-22, 1991.

23. Puig-Suari, J. and Longuski, J.M., “Perturbation Analysis of Aerocapture with Tethers,” AAS Paper 91-549, AAS/AIAA Astrodynamics Conference, Durango, Colorado, August 19-22, 1991.

24. Longuski, J.M. and Puig-Suari, J., “Hyperbolic Aerocapture and Elliptic Orbit Transfer with Tethers,” IAF Paper 91-339, 42nd Congress of the International Astronautical Federation, Montreal, Canada, October 5-11, 1991.

25. Tsiotras, P. and Longuski, J.M., “A Complex Analytic Solution for the Attitude Motion of a Near-Symmetric Rigid Body Under Body-Fixed Torques,” IAF Paper No. 91-359, 42nd Congress of the International Astronautical Federation, Montreal, Canada, October 5-11, 1991.

26. Puig-Suari, J. and Longuski, J.M., “Aerocapture with a Flexible Tether,” AIAA Paper No. 92-4662, AIAA/AAS Astrodynamics Conference, Hilton Head Island, South Carolina, August 10-12, 1992.

27. Puig-Suari, J., Longuski, J.M., and Mechalas, J., “Aerobraking Tethers for the Exploration of the Solar System,” IAF Paper No. 92-0001, 43rd Congress (The World Space Congress) of the International Astronautical Federation, Washington, D.C., August 28-September 5, 1992.

28. Tsiotras, P. and Longuski, J.M., “On the Large Angle Problem in Rigid Body Attitude Dynamics,” IAF Paper No. 92-0034, 43rd Congress (The World Space Congress) of the International Astronautical Federation, Washington, D.C., August 28-September 5, 1992.

29. Tsiotras, P. and Longuski, J.M., “On Attitude Stabilization of Symmetric Spacecraft with Two Control Torques,” American Control Conference, San Francisco, California, June 2-4, 1993.

30. Tsiotras, P. and Longuski, J.M., “Analytic Solution of Euler’s Equations of Motion for an Asymmetric Rigid Body,” AAS Paper 93-580, AAS/AIAA Astrodynamics Conference, Victoria, British Columbia, Canada, August 16-19, 1993.

31. Patel, M.R. and Longuski, J.M., “Automated Design of Delta-V Gravity-Assist Trajectories for Solar System Exploration,” AAS Paper 93-682, AAS/AIAA Astrodynamics Conference, Victoria, British Columbia, Canada, August 16-19, 1993.

32. Puig-Suari, J., Longuski, J.M., and Tragesser, S., “A Three Dimensional Hinged-Rod Model for Flexible-Elastic Aerobraking Tethers,” AAS Paper 93-730, AAS/AIAA Astrodynamics Conference, Victoria, British Columbia, Canada, August 16-19, 1993.

33. Longuski, J.M., Puig-Suari, J., Tsiotras, P., and Tragesser, S., “Optimal Mass for Aerobraking Tethers,” 44th Congress of the International Astronautical Federation, Graz, Austria, October 16-22, 1993.

34. Tsiotras, P., Corless, M., and Longuski, J.M., “Invariant Manifold Techniques for Attitude Control of Symmetric Spacecraft,” 32nd IEEE Conference on Decision and Control, San Antonio, Texas, December 15-17, 1993.

35. Sims, J.A. and Longuski, J.M., “Aerogravity-Assist Trajectories to the Outer Planets,” IAA-L-0405P, IAA International Conference on Low-Cost Planetary Missions, Laurel, Maryland, April 12-15, 1994.

36. Patel, J.R. and Longuski, J.M., “A Uranus-Neptune-Pluto Opportunity,” IAA-L-0408, IAA International Conference on Low-Cost Planetary Missions, Laurel, Maryland, April 12-15, 1994.

37. Puig-Suari, J., Longuski, J.M., and Tragesser, S., “A Tether Sling for Lunar and Interplanetary Exploration,” IAA-L-0701P, IAA International Conference on Low-Cost Planetary Missions, Laurel, Maryland, April 12-15, 1994.

38. Beck, R.A. and Longuski, J.M., “Analytic Solution for the Velocity of a Rigid Body During Spinning-Up Maneuvers,” AIAA Paper No. 94-3713, AIAA/AAS Astrodynamics Conference, Scottsdale, Arizona, August 1-3, 1994.

39. Tragesser, S.G., Longuski, J.M., Puig-Suari, J., and Mechalas, J.P., “Analysis of the Optimal Mass Problem for Aerobraking Tethers,” AIAA Paper No. 94-3747, AIAA/AAS Astrodynamics Conference, Scottsdale, Arizona, August 1-3, 1994.

40. Patel, M.R., Longuski, J.M., and Sims, J.A., “Mars Free Return Trajectories,” AIAA Paper No. 94-3766, AIAA/AAS Astrodynamics Conference, Scottsdale, Arizona, August 1-3, 1994.

41. Petropoulos, A.E. and Longuski, J.M., “Analysis of Mapping Coverage Obtained from Spacecraft,” AIAA Paper No. 94-3767, AIAA/AAS Astrodynamics Conference, Scottsdale, Arizona, August 1-3, 1994.

42. Sims, J.A. and Longuski, J.M., “Analysis of Leveraging for Interplanetary Missions,” AIAA Paper No. 94-3769, AIAA/AAS Astrodynamics Conference, Scottsdale, Arizona, August 1-3, 1994.

43. Tragesser, S.G., Longuski, J.M., and Puig-Suari, J., “An Analytic Characterization of the Optimal Mass Problem for Aerobraking Tethers,” Proceedings of the Fourth International Conference on Tethers In Space, pp. 1217-2381, Washington, D.C., April 10-14, 1995.

44. Tragesser, S.G., Longuski, J.M., and Puig-Suari, J., “A General Approach to Aerobraking Tether Design,” AAS Paper 95-353, AAS/AIAA Astrodynamics Conference, Halifax, Nova Scotia, Canada, August 14-17, 1995.

45. Sims, J.A., Longuski, J.M., and Staugler, A.J., “V∞ Leveraging for Interplanetary Missions: Multiple-Revolution Orbit Techniques,” AAS Paper 95-306, AAS/AIAA Astrodynamics Conference, Halifax, Nova Scotia, Canada, August 14-17, 1995.

46. Randall, L.A., Longuski, J.M., and Beck, R.A., “Complex Analytic Solutions for a Spinning Rigid Body Subject to Constant Transverse Torques,” AAS Paper 95-373, AAS/AIAA Astrodynamics Conference, Halifax, Nova Scotia, Canada, August 14-17, 1995.

47. Beck, R.A. and Longuski, J.M., “Annihilation of Transverse Velocity Bias During Spinning-Up Maneuvers,” AAS Paper 95-414, AAS/AIAA Astrodynamics Conference, Halifax, Nova Scotia, Canada, August 14-17, 1995.

48. Sims, J.A., Longuski, J.M., and Staugler, A.J., “Trajectory Options for Low-Cost Missions to Asteroids,” IAA-L-0206, Second IAA International Conference on Low-Cost Planetary Missions, Laurel, Maryland, April 16-19, 1996.

49. Tragesser, S.G. and Longuski, J.M., “The Effect of Parameter Uncertainties on the Aerobraking Tether,” AIAA Paper No. 96-3597, AIAA/AAS Astrodynamics Conference, San Diego, California, July 29-31, 1996.

50. Sims, J.A., Staugler, A.J., and Longuski, J.M., “Trajectory Options to Pluto via Gravity Assists from Venus, Mars, and Jupiter,” AIAA Paper No. 96-3614, AIAA/AAS Astrodynamics Conference, San Diego, California, July 29-31, 1996.

51. Tsiotras, P. and Longuski, J.M., “Comments on a New Parameterization of the Attitude Kinematics,” AIAA Paper No. 96-3627, AIAA/AAS Astrodynamics Conference, San Diego, California, July 29-31, 1996.

52. Kuchnicki, S.N., Tragesser, S.G., and Longuski, J.M., “Dynamics of a Tether Sling,” AAS Paper No. 97-605, AAS/AIAA Astrodynamics Conference, Sun Valley, Idaho, August 4-7, 1997.

53. Tragesser, S.G. and Longuski, J.M., “Modeling Issues Concerning Motion of the Saturnian Satellites,” AAS Paper No. 97-670, AAS/AIAA Astrodynamics Conference, Sun Valley, Idaho, August 4-7, 1997.

54. Beck, R.A. and Longuski, J.M., “Large Angle Solution for a Spinning Rigid Body Subject to Constant Transverse Torques,” AAS Paper No. 97-680, AAS/AIAA Astrodynamics Conference, Sun Valley, Idaho, August 4-7, 1997.

55. Petropoulos, A.E., Longuski, J.M., and Bonfiglio, E.P., “Trajectories to Jupiter via Gravity Assists from Venus, Earth, and Mars,” AIAA Paper No. 98-4284, AIAA/AAS Astrodynamics Specialist Conference, Boston, Massachusetts, August 10-12, 1998.

56. Beck, R.A., Williams, M.H., and Longuski, J.M., “Floquet Solution for a Spinning Symmetric Rigid Body with Constant Transverse Torques,” AIAA Paper No. 98-4385, AIAA/AAS Astrodynamics Conference, Boston, Massachusetts, August 10-12, 1998.

57. Petropoulos, A.E., Longuski, J.M., and Vinh, N.X., “Shaped-Based Analytic Representations of Low-Thrust Trajectories for Gravity-Assist Applications,” AAS Paper No. 99 337, AAS/AIAA Astrodynamics Conference, Girdwood, Alaska, August 16-19, 1999.

58. Bonfiglio, E.P., Longuski, J.M., and Vinh, N.X., “Automated Design of Aerogravity-Assist Trajectories,” AAS Paper No. 99-361, AAS/AIAA Astrodynamics Conference, Girdwood, Alaska, August 16-19, 1999.

59. Javorsek II, D. and Longuski, J.M., “Velocity Pointing Errors Associated with Spinning Thrusting Spacecraft,” AAS Paper No. 99-452, AAS/AIAA Astrodynamics Conference, Girdwood, Alaska, August 16-19, 1999.

60. Gick, R.A., Williams, M.H., and Longuski, J.M., “Periodic Solutions for a Spinning Asymmetric Rigid Body with Constant Principal Axis Torque,” AAS Paper No. 99-453, AAS/AIAA Astrodynamics Conference, Girdwood, Alaska, August 16-19, 1999.

61. McRonald, A.D., Randolph, J.E., Lewis, M.J., Bonfiglio, E.P., Longuski, J., and Kolodziej, P., “From LEO to the Planets Using Waveriders,” AIAA Paper No. 1999-4803, AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Norfolk, Virginia, November 1–5, 1999.

62. Johnson, W.R. and Longuski, J.M., “Design of Aerogravity-Assist Trajectories,” Paper No. AIAA 2000-4031, AIAA/AAS Astrodynamics Specialist Conference, August 14-17, 2000, Denver, CO.

63. Vinh, N.X., Johnson, W.R., and Longuski, J.M., “Mars Aerocapture using Bank Modulation,” Paper No. AIAA 2000-4424, AIAA/AAS Astrodynamics Specialist Conference, August 14-17, 2000, Denver, CO.

64. Okutsu, M. and Longuski, J.M., “Mars Free Returns via Gravity Assist from Venus,” Paper No. AIAA 2000-4139, AIAA/AAS Astrodynamics Specialist Conference, August 14-17, 2000, Denver, CO.

65. Strange, N.J. and Longuski, J.M., “A Graphical Method for Gravity-Assist Trajectory Design,” Paper No. AIAA 2000-4030, AIAA/AAS Astrodynamics Specialist Conference, August 14-17, 2000, Denver, CO.

66. Heaton, A.F., Strange, N.J., Longuski, J.M., and Bonfiglio, E.P., “Automated Design of the Europa Orbiter Tour,” Paper No. AIAA 2000-4034, AIAA/AAS Astrodynamics Specialist Conference, August 14-17, 2000, Denver, CO.

67. Petropoulos, A.E. and Longuski, J.M., “Automated Design of Low-Thrust Gravity-Assist Trajectories,” Paper No. AIAA 2000-4033, AIAA/AAS Astrodynamics Specialist Conference, August 14-17, 2000, Denver, CO.

68. Johnson, W.R., Longuski, J.M., and Lyons, D.T., “Attitude Control During Auton-omous Aerobraking for Near-Term Mars Exploration,” Paper AAS 01-388, AAS/ AIAA Astrodynamics Specialists Conference, Quebec City, Quebec, Canada, July 30 – August 2, 2001.

69. Okutsu, M., Debban, T.J., and Longuski, J.M., “Tour Design Strategies for the Europa Orbiter Mission,” Paper AAS 01-463, AAS/AIAA Astrodynamics Specialists Conference, Quebec City, Quebec, Canada, July 30 – August 2, 2001.

70. Heaton, A.F. and Longuski, J.M., “The Feasibility of a Galileo-Style Tour of the Uranian Satellites,” Paper AAS 01-464, AAS/AIAA Astrodynamics Specialists Conference, Quebec City, Quebec, Canada, July 30 – August 2, 2001.

71. Petropoulos, A.E. and Longuski, J.M., “A Shaped-Based Algorithm for the Automated Design of Low-Thrust, Gravity-Assist Trajectories,” Paper AAS 01-467, AAS/AIAA Astrodynamics Specialists Conference, Quebec City, Quebec, Canada, July 30 – August 2, 2001.

72. McConaghy, T.T., Debban, T.J., Petropoulos, A.E., and Longuski, J.M., “An Approach to Design and Optimization of Low-Thrust Trajectories with Gravity-Assists,” Paper AAS 01-468, AAS/AIAA Astrodynamics Specialists Conference, Quebec City, Quebec, Canada, July 30 – August 2, 2001.

73. McConaghy, T.T., Longuski, J.M., and Byrnes, D.V., “Analysis of a Broad Class of Earth-Mars Cycler Trajectories,” Paper AIAA 2002-4420, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

74. Chen, K.J., McConaghy, T.T., Okutsu, M., and Longuski, J.M., “A Low-Thrust Version of the Aldrin Cycler,” Paper AIAA 2002-4421, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

75. Chen, K.J., Landau, D.F., McConaghy, T.T., Okutsu, M., Longuski, J.M., and Aldrin, B., “Preliminary Analysis and Design of Powered Earth-Mars Cycling Trajectories,” Paper AIAA 2002-4422, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

76. Byrnes, D.V., McConaghy, T.T., and Longuski, J. M., “Analysis of Various Two Synodic Period Earth-Mars Cycler Trajectories,” Paper AIAA 2002-4423, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

77. Jokic, M.D. and Longuski, J.M., “Design of a Tether Sling for Human Transportation Systems Between Earth and Mars,” Paper AIAA 2002-4642, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

78. Jokic, M.D., Daniel, W.J.T., and Longuski, J.M., “3D Modelling of an Elastic Tether Using a Dissipative Time-Stepping Algorithm,” Paper AIAA 2002-4643, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

79. Debban, T.J., McConaghy, T.T., and Longuski, J.M., “Design and Optimization of Low-Thrust Gravity-Assist Trajectories to Selected Planets,” Paper AIAA 2002-4729, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

80. Johnson, W.R., Longuski, J.M., and Lyons, D.T., “High-Fidelity Modeling of Semi-Autonomous Attitude Control During Aerobraking,” Paper AIAA 2002-4909, AIAA/AAS Astrodynamics Specialist Conference, Monterey, CA, August 5-8, 2002.

81. Park, R.S., Scheeres, D.J., Giampieri, G., Longuski, J.M., and Fischbach, E., “Estimating General Relativity Parameters from Radiometric Tracking of Heliocentric Trajectories,” Paper AAS 03-205, AAS/AIAA Spaceflight Mechanics Meeting, Ponce, Puerto Rico, February 9-13, 2003.

82. McConaghy, T.T., Yam, C.H., Landau, D.F., and Longuski, J.M., “Two-Synodic-Period Earth-Mars Cyclers with Intermediate Earth Encounter,” Paper AAS 03-509, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

83. Chen, K.J., McConaghy, T.T., Landau, D.F., and Longuski, J.M., “A Powered Earth-Mars Cycler with Three Synodic-Period Repeat Time,” Paper AAS 03-510, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

84. Landau, D.F. and Longuski, J.M., “Comparative Assessment of Human Missions to Mars,” Paper AAS 03-513, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

85. Landau, D.F., Longuski, J.M., and Penzo, P.A., “Parking Orbits for Human Missions to Mars,” Paper AAS 03-514, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

86. Javorsek, D., II, and Longuski, J.M., “Extension of Satellite Lifetime via Precision Pointing of Orbit Transfer Maneuvers,” Paper AAS 03-515, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

87. Javorsek, D., II, and Longuski, J.M., “Effect of Thrust Profile on Velocity Pointing Errors of Spinning Spacecraft,” Paper AAS 03-516, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

88. Jokic, M. and Longuski, J.M., “Artificial Gravity and Abort Scenarios via Tethers for Human Missions to Mars,” Paper AAS 03-536, AAS/AIAA Astrodynamics Specialist Conference, Big Sky, MT, August 3-7, 2003.

89. Park, R.S., Fischbach, E., Giampieri, G., Longuski, J.M., and Scheeres, D.J., “Test of General Relativity: Estimating PPN Parameters γ and β from Spacecraft Radiometric Tracking Data,” Poster Presentation and Proceedings, SPACEPART ’03, the Second International Conference on Particle and Fundamental Physics in Space, Washington, D.C., December 10-12, 2003.

90. Landau, D.F. and Longuski, J.M., “A Reassessment of Trajectory Options for Human Missions to Mars,” Paper AIAA 2004-5095, AAS/AIAA Astrodynamics Specialist Conference, Providence, RI, August 16-19, 2004.

91. McConaghy, T.T. and Longuski, J.M., “Parameterization Effects on Convergence When Optimizing a Low-Thrust-Trajectory with Gravity Assists,” Paper AIAA 2004-5403, AAS/AIAA Astrodynamics Specialist Conference, Providence, RI, August 16-19, 2004.

92. Park, R.S., Scheeres, D.J., Giampieri, G., Longuski, J.M., and Fischbach, E., “Orbit Design for General Relativity Experiments: Heliocentric and Mercury-centric Cases,” Paper AIAA 2004-5394, AAS/AIAA Astrodynamics Specialist Conference, Providence, RI, August 16-19, 2004.

93. Yam, C.H., McConaghy, T.T., Chen, K.J., and Longuski, J.M., “Preliminary Design of Nuclear Electric Propulsion Missions to the Outer Planets,” AAS/AIAA Astrodynamics Specialist Conference, Providence, RI, August 16-19, 2004.

94. Yam, C.H., McConaghy, T.T., Chen, K.J., and Longuski, J.M., “Design of Low-Thrust Gravity-Assist Trajectories to the Outer Planets,” Paper IAC-04-A.6.02, 55th International Astronautical Congress, Vancouver, Canada, October 4–8, 2004.

95. Medlock, K.L. Gates, Longuski, J.M., and Lyons, D.T., “A Dual-Use Ballute for Entry and Descent During Planetary Missions,” 3rd International Planetary Probe Workshop, Anavyssos, Attica, Greece, June 27–July 1, 2005.

96. Ayoubi, M.A., Longuski, J.M., “Transverse Velocity Solution for a Spinning-Up Rigid Body Subject to Constant Body-Fixed Moments and Forces,” AAS Paper 05-261, AAS/AIAA Astrodynamics Specialists Conference, Lake Tahoe, CA, August 7–11, 2005.

97. Landau, D.F. and Longuski, J.M., “Mars Exploration via Earth-Mars Semi-Cyclers,” AAS Paper 05-269, AAS/AIAA Astrodynamics Specialists Conference, Lake Tahoe, CA, August 7–11, 2005.

98. Yam, C.H and Longuski, J.M.., “Optimization of Low-Thrust Gravity Assist Trajectories with a Reduced Parameterization of the Thrust Vector,” AAS Paper 05-375, AAS/AIAA Astrodynamics Specialists Conference, Lake Tahoe, CA, August 7–11, 2005.

99. Okutsu, M., Landau, D.F., and Longuski, J.M., “Low-Thrust Roundtrip Trajectories to Mars with One-Synodic-Period Repeat Time,” AAS Paper 05-395, AAS/AIAA Astrodynamics Specialists Conference, Lake Tahoe, CA, August 7–11, 2005.

100. Medlock, K.L. Gates and Longuski, J.M., “An Approach to Sizing a Dual-Use Ballute System for Aerocapture, Descent and Landing,” 4th International Planetary Probe Workshop, Pasadena, CA, June 27-30, 2006.

101. Landau, D.F. and Longuski, J.M., “Continuous Mars Habitation with a Limited Number of Cycler Vehicles,” Paper No. AIAA 2006-6020, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

102. Chen, K., Okutsu, M., Landau, D., and Longuski, J.M., “Low-Thrust Aldrin Cycler with Reduced Encounter Velocities,” Paper No. AIAA 2006-6021, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

103. Medlock, K.L. Gates, Ayoubi, M.A., Longuski, J.M., and Lyons, D.T., “Analytic Solutions for Aerocapture, Descent, and Landing Trajectories for Dual-Use Ballute Systems,” Paper No. AIAA 2006-6026, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

104. Landau, D.F. and Longuski, J.M., “Guidance Strategy for Hyperbolic Rendezvous,” Paper No. AIAA 2006-6299, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

105. Ayoubi, M.A. and Longuski, J.M., “Axial Velocity Solution for a Spinning-Up Rigid Body Subject to Constant Body-Fixed Forces and Moments,” Paper No. AIAA 2006-6655, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

106. Yam, C.H. and Longuski, J.M., “Reduced Parameterization for Optimization of Low-Thrust Gravity-Assist Trajectories: Case Studies,” Paper No. AIAA 2006-6744, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

107. Okutsu, M., Yam, C.H., and Longuski, J.M., “Low-Thrust Trajectories to Jupiter via Gravity Assists from Venus, Earth, and Mars,” Paper No. AIAA 2006-6745, AIAA/AAS Astrodynamics Specialist Conference, Keystone, CO, August 21-24, 2006.

108. Gates Medlock, K.L. and Longuski, J.M., “Aerocapture Ballutes for the Exploration of the Solar System,” Poster Presentation, 5th International Planetary Probe Workshop, Bordeaux, France, June 25-29, 2007.

109. Patterson, C., Kakoi, M., Howell, K.C., Yam, C.H., and Longuski, J.M., “500-Year Eccentric Orbits for the Cassini Spacecraft within the Saturn System,” AAS 07-256, AAS/AIAA Astrodynamics Specialist Conference Mackinac Island, Michigan, Aug. 19-23, 2007.

110. Yam, C.H., Davis, D.C., Longuski, J.M., and Howell, K.C., “Saturn Impact Trajectories for Cassini End-of-Life,” AAS 07-257, AAS/AIAA Astrodynamics Specialist Conference, Mackinac Island, Michigan, Aug. 19-23, 2007.

111. Okutsu, M., Yam, C.H., and Longuski, J.M., “Cassini End-of-Life Escape Trajectories to the Outer Planets,” AAS 07-258, AAS/AIAA Astrodynamics Specialist Conference, Mackinac Island, Michigan, Aug. 19-23, 2007.

112. Gates Medlock, K.L., Alexeenko, A.A., and Longuski, J.M., “Trajectory and Aerothermodynamic Analysis of Towed-Ballute Aerocapture Using Direct Simulation Monte Carlo,” AAS 07-307, AAS/AIAA Astrodynamics Specialist Conference, Mackinac Island, Michigan, Aug. 19-23, 2007.

113. Henning, G.A. and Longuski, J.M., “Optimization of Aerogravity-Assist Trajectories for Waveriders,” AAS 07-325, AAS/AIAA Astrodynamics Specialist Conference, Mackinac Island, Michigan, Aug. 19-23, 2007.

114. Medlock, K. Gates, Alexeenko, A.A., and Longuski, J.M., “Analysis of Temperature-Constrained Ballute Aerocapture for High-Mass Mars Payloads,” 6th International Planetary Probe Workshop, Atlanta, GA, June 23-27, 2008.

115. Medlock, K.G. and Longuski, J.M., “Thermal Protection Tradeoffs for Ballute versus Aeroshell Entry and Descent at Mars,” Paper No. AIAA 2008-6428, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

116. Kloster, K.W., Yam, C.H., and Longuski, J.M., “Saturn Escape Options for Cassini Encore Missions,” Paper No. AIAA 2008-6753, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

117. Pollock, G.E., Gangestad, J.W., and Longuski, J.M., “Analysis of Lorentz Spacecraft Motion about Earth using the Hill-Clohessy-Wiltshire Equations,” Paper No. AIAA 2008-6762, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

118. Moonjelly, P.V., Ambalavanan, M., Filmer, D.L., and Longuski, J.M., “Development of a Low-Cost, Low-Power Attitude Determination System for a Nano-Satellite,” Paper No. AIAA 2006-6933, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

119. Chen, K.J., Kloster, K.W., and Longuski, J.M., “A Graphical Method for Preliminary Design of Low-Thrust Gravity-Assist Trajectories,” Paper No AIAA 2008-6952, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

120. Gangestad, J.W., Pollock, G.E., and Longuski, J.M., “Dynamics of Lorentz Spacecraft with Application to a Mission to Enceladus,” Paper No. AIAA 2008-7206, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

121. Link, D.A. and Longuski, J.M., “Dynamics of a Tether Sling System,” Paper No. AIAA 2008-7381, AIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, HI, August 18-21, 2008.

122. Gangestad, J.W., Pollock, G.E., and Longuski, J.M., “Constraints on the Motion of Electrostatically Charged Spacecraft,” AAS Paper No. 09 – 342, AAS/AIAS Astrodynamics Specialist Conference, Pittsburgh, PA, August 9-13, 2009.

123. Kloster, K.W., Petropoulos, A.E., and Longuski, J.M., “Europa Orbiter Mission Design With Io Gravity Assists,” AAS Paper No. 09 – 353, AAS/AIAS Astrodynamics Specialist Conference, Pittsburgh, PA, August 9-13, 2009.

124. Pollock, G.E., Gangestad, J.W., and Longuski, J.M., “Charged Spacecraft Formations: A Trade Study on Coulomb and Lorentz Forces,” AAS Paper No. 09 – 389, AAS/AIAS Astrodynamics Specialist Conference, Pittsburgh, PA, August 9-13, 2009.

125. Lynam, A.E., Kloster, K.W., and Longuski, J.M., “An Assessment of Multiple Satellite-Aided Capture at Jupiter,” AAS Paper No. 09 – 424, AAS/AIAS Astrodynamics Specialist Conference, Pittsburgh, PA, August 9-13, 2009.

126. Pollock, G.E., Gangestad, J.W., and Longuski, J.M., “Lorentz Augmentation of Gravity-Assist Flybys with Electrostatically Charged Spacecraft,” AAS Paper No. 10-227, AAS/AIAA Space Flight Mechanics Meeting, February 14-17, 2010.

127. Gangestad, J.W., Pollock, G.E., and Longuski, J.M., “Lagrange’s Planetary Equations for the Motion of Electrostatically Charged Spacecraft,” AAS Paper No. 10-133, AAS/AIAA Space Flight Mechanics Meeting, February 14-17, 2010.