Zachary R Putnam

20022019
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Research Output 2002 2019

  • 26 Conference contribution
  • 9 Article
  • 1 Paper
  • 1 Conference article
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Article
2019

Entry trajectory options for high ballistic coefficient vehicles at Mars

Lorenz, C. G. & Putnam, Z. R., Jan 1 2019, In : Journal of Spacecraft and Rockets. 56, 3, p. 811-822 12 p.

Research output: Contribution to journalArticle

Hypersonic aerodynamics
descent
Ballistics
entry
hypersonics
2018

Analytical Assessment of Drag-Modulation Trajectory Control for Planetary Entry

Putnam, Z. R. & Braun, R. D., Dec 15 2018, In : Journal of the Astronautical Sciences. 65, 4, p. 470-489 20 p.

Research output: Contribution to journalArticle

atmospheric entry
trajectory control
drag
Drag
trajectory
2015

Extension and enhancement of the Allen-Eggers analytical ballistic entry trajectory solution

Putnam, Z. R. & Braun, R. D., Mar 1 2015, In : Journal of Guidance, Control, and Dynamics. 38, 3, p. 414-430 17 p.

Research output: Contribution to journalArticle

flight paths
Flight paths
Ballistics
entry
ballistics
2014

Drag-modulation flight-control system options for planetary aerocapture

Putnam, Z. R. & Braun, R. D., Jan 1 2014, In : Journal of Spacecraft and Rockets. 51, 1, p. 139-150 12 p.

Research output: Contribution to journalArticle

aerocapture
flight control
Flight control systems
drag
Drag

Feasibility of guided entry for a crewed lifting body without angle-of-attack control

Putnam, Z. R., Grant, M. J., Kelly, J. R., Braun, R. D. & Krevor, Z. C., Jan 1 2014, In : Journal of Guidance, Control, and Dynamics. 37, 3, p. 729-740 12 p.

Research output: Contribution to journalArticle

lifting bodies
angle of attack
Angle of attack
entry
vehicles

Precision landing at Mars using discrete-event drag modulation

Putnam, Z. R. & Braun, R. D., Jan 1 2014, In : Journal of Spacecraft and Rockets. 51, 1, p. 128-138 11 p.

Research output: Contribution to journalArticle

Mars exploration
Parachutes
landing
Landing
entry
2013

Guided entry performance of low ballistic coefficient vehicles at mars

Meginnis, I. M., Putnam, Z. R., Clark, I. G., Braun, R. D. & Barton, G. H., Sep 1 2013, In : Journal of Spacecraft and Rockets. 50, 5, p. 1047-1059 13 p.

Research output: Contribution to journalArticle

Ballistics
entry
mars
ballistics
Mars
2008

Improving lunar return entry range capability using enhanced skip trajectory guidance

Putnam, Z. R., Bairstow, S. H., Braun, R. D. & Barton, G. H., Mar 1 2008, In : Journal of Spacecraft and Rockets. 45, 2, p. 309-315 7 p.

Research output: Contribution to journalArticle

entry
Crew Exploration Vehicle
trajectory
Trajectories
trajectories
2007

Entry system options for human return from the moon and mars

Putnam, Z. R., Braun, R. D., Rohrschneider, R. R. & Dec, J. A., Jan 1 2007, In : Journal of Spacecraft and Rockets. 44, 1, p. 194-202 9 p.

Research output: Contribution to journalArticle

Moon
natural satellites
entry
mars
Mars