Zachary R Putnam

20022019
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Research Output 2002 2019

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

Linear covariance analysis techniques to generate navigation and sensor requirements for the safe and precise landing – integrated capabilities evolution (SPLICE) project

Woffinden, D. C., Robinson, S. B., Williams, J. W. & Putnam, Z. R., Jan 1 2019, AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Scitech 2019 Forum).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Landing
Navigation
Sensors
Navigation systems
Aerodynamics

Parking orbit selection for mars aerocapture-entry systems

Zinner, E. J. & Putnam, Z. R., Jan 1 2019, Spaceflight Mechanics 2019. Topputo, F., Sinclair, A. J., Wilkins, M. P. & Zanetti, R. (eds.). Univelt Inc., p. 2435-2454 20 p. AAS 19-463. (Advances in the Astronautical Sciences; vol. 168).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

parking orbits
aerocapture
parking
Parking
entry
2018

Aerocapture system options for delivery of small satellites to mars

Falcone, G., Williams, J. W. & Putnam, Z. R., Jan 1 2018, Guidance, navigation, and control, 2018. Walker, C. A. H. (ed.). Univelt Inc., p. 271-284 14 p. (Advances in the Astronautical Sciences; vol. 164).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

aerocapture
mars
Mars
delivery
Satellites

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

Defining the critical depth of impact damage for thermal protection systems

Skolnik, N. L. & Putnam, Z. R., Jan 1 2018, AIAA Aerospace Sciences Meeting. 210059 ed. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Aerospace Sciences Meeting, 2018; no. 210059).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hypersonic vehicles
Debris
Hot Temperature
Temperature

Design of a cubesat mission to investigate high-enthalpy noneqilibrium flow chemistry

Zuiker, N., Williams, J., Putnam, Z. R., Levin Fliflet, D., Ghosh, A. R. M. & Alexeenko, A., Jan 1 2018, AIAA Aerospace Sciences Meeting. 210059 ed. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Aerospace Sciences Meeting, 2018; no. 210059).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Enthalpy
Pressure sensors
Spectrometers
Heat flux
Costs

Prediction of flight measurements of high-enthalpy nonequilibrium flow from a cubesat-class atmospheric probe

Morgan, J., Nuwal, N., Williams, J., Putnam, Z. R., Levin Fliflet, D., Pikus, A., Berger, A. & Alexeenko, A., Jan 1 2018, AIAA Aerospace Sciences Meeting. 210059 ed. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Aerospace Sciences Meeting, 2018; no. 210059).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Radiative transfer
Nitric oxide
Pressure sensors
Ultraviolet radiation
Sensitivity analysis

Supersonic retropropulsion on robotic Mars landers: Selected design trades

Wolf, A. A., Noyes, C., Strauss, W., Benito, J., Lobbia, M., McCann, J., Nakazono, B., Putnam, Z. R. & Lorenz, C. G., Jan 1 2018, AAS/AIAA Astrodynamics Specialist Conference, 2018. Singla, P., Weisman, R. M., Marchand, B. G. & Jones, B. A. (eds.). Univelt Inc., p. 643-657 15 p. (Advances in the Astronautical Sciences; vol. 167).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

parachutes
Parachutes
robotics
mars
Mars
2017

Optimal hypersonic trajectory strategies for supersonic retropropulsion at Mars

Lorenz, C. G. & Putnam, Z. R., Jan 1 2017, AIAA Atmospheric Flight Mechanics Conference, 2017. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Atmospheric Flight Mechanics Conference, 2017).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hypersonic aerodynamics
Propellants
Trajectories
Ballistics
Landing
2016

Advances in guidance, navigation, and control for planetary entry, descent, and landing systems

Putnam, Z. R. & Braun, R. D., Jan 1 2016, Guidance, Navigation, and Control 2016. Chart, D. A. (ed.). Univelt Inc., p. 549-559 11 p. (Advances in the Astronautical Sciences; vol. 157).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

landing aids
atmospheric entry
descent
Landing
navigation

Analytical assessment of drag-modulation trajectory control for planetary entry

Putnam, Z. R. & Braun, R. D., Jan 1 2016, Astrodynamics 2015. Turner, J. D., Wawrzyniak, G. G., Cerven, W. T. & Majji, M. (eds.). Univelt Inc., p. 4309-4324 16 p. (Advances in the Astronautical Sciences; vol. 156).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

atmospheric entry
trajectory control
drag
Drag
trajectory

Moving-mass actuator system options for entry vehicles with deployable decelerators

Lohan, K. G. & Putnam, Z. R., Jan 1 2016, Spaceflight Mechanics 2016. Ozimek, M. T., Zanetti, R., Bowes, A. L., Russell, R. P. & Ozimek, M. T. (eds.). Univelt Inc., p. 1875-1886 12 p. (Advances in the Astronautical Sciences; vol. 158).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

brakes (for arresting motion)
entry
vehicles
Actuators
actuators

Review and assessment of the steep lifting entry closed-form trajectory solution

Putnam, Z. R. & Braun, R. D., Jan 1 2016, AIAA Atmospheric Flight Mechanics Conference. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Atmospheric Flight Mechanics Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trajectories
Aeroassist
Flight paths
Drag
Equations of motion

Strategies for landing large ballistic coefficient vehicles on mars

Anderson, T. R., Putnam, Z. R. & Braun, R. D., Jan 1 2016, AIAA Atmospheric Flight Mechanics Conference. American Institute of Aeronautics and Astronautics Inc, AIAA, (AIAA Atmospheric Flight Mechanics Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ballistics
Landing
Hypersonic aerodynamics
Aerodynamics
Robotics
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

Extension and enhancement of the Allen-Eggers analytic solution for ballistic entry trajectories

Putnam, Z. R. & Braun, R. D., Jan 1 2014, AIAA AVIATION 2014 -AIAA Atmospheric Flight Mechanics Conference. American Institute of Aeronautics and Astronautics Inc., (AIAA AVIATION 2014 -AIAA Atmospheric Flight Mechanics Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ballistics
Equations of motion
Trajectories
Drag
Earth (planet)

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

Advances in inertial guidance technology for aerospace systems

Braun, R. D., Putnam, Z. R., Steinfeldt, B. A. & Grant, M. J., Sep 16 2013, AIAA Guidance, Navigation, and Control (GNC) Conference. (AIAA Guidance, Navigation, and Control (GNC) Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Military applications
Closed loop systems
Navigation
Managers
Trajectories

Drag modulation flight control system options for planetary aerocapture

Putnam, Z. R. & Braun, R. D., Aug 19 2013, 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013. (51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

aerocapture
flight control
Flight control systems
drag
Drag

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

Precision landing at Mars using discrete-event drag modulation

Putnam, Z. R. & Braun, R. D., Jan 1 2013, In : Advances in the Astronautical Sciences. 148, p. 3815-3834 20 p.

Research output: Contribution to journalConference article

Mars exploration
Parachutes
landing
Landing
entry

Variable angle-of-attack profile entry guidance for a crewed lifting body

Putnam, Z. R., Grant, M. J., Kelly, J. R., Braun, R. D. & Krevor, Z. C., Aug 19 2013, 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013. (51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

lifting bodies
angle of attack
Angle of attack
vehicles
entry
2012

Drag modulation flight control for aerocapture

Putnam, Z. R., Clark, I. G. & Braun, R. D., May 22 2012, 2012 IEEE Aerospace Conference. 6186999. (IEEE Aerospace Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

aerocapture
flight control
aeroassist
drag
Aeroassist

Guided entry performance of low ballistic coefficient vehicles at Mars

Meginnis, I., Putnam, Z. R., Clark, I., Braun, R. & Barton, G., May 22 2012, 2012 IEEE Aerospace Conference. 6187001. (IEEE Aerospace Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ballistics
entry
mars
ballistics
Mars
2010

PredGuid entry guidance for orion return from low earth orbit

Putnam, Z. R., Neave, M. D. & Barton, G. H., Jun 2 2010, 2010 IEEE Aerospace Conference Proceedings. 5447010. (IEEE Aerospace Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

low Earth orbits
Landing
landing
Orbits
Earth (planet)
2009

An entry trajectory design methodology for lunar return

Putnam, Z. R., Barton, G. H. & Neave, M. D., Dec 1 2009, AIAA Guidance, Navigation, and Control Conference and Exhibit. 2009-5773. (AIAA Guidance, Navigation, and Control Conference and Exhibit).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trajectories
Drag
Flight paths
Vehicle performance
Hypersonic aerodynamics
2008

Entry range capability analysis of the Orion crew module

Putnam, Z. R. & Barton, G. H., Aug 19 2008, 2008 IEEE Aerospace Conference, AC. 4526287. (IEEE Aerospace Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Drag
Flight paths
Landing
Trajectories
Hypersonic aerodynamics

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

A comparison of two orion skip entry guidance algorithms

Rea, J. R. & Putnam, Z. R., 2007, Collection of Technical Papers - AIAA Guidance, Navigation, and Control Conference 2007. Vol. 2. p. 1155-1173 19 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Landing
Control systems
NASA
Interface states
Thermal load

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
2006

Improving lunar return entry footprints using enhanced skip trajectory guidance

Putnam, Z. R., Braun, R. D., Bairstow, S. H. & Barton, G. H., Dec 1 2006, Collection of Technical Papers - Space 2006 Conference. p. 2230-2244 15 p. (Collection of Technical Papers - Space 2006 Conference; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trajectories
NASA

Trajectory options for human mars missions

Wooster, P. D., Braun, R. D., Ahn, J. & Putnam, Z. R., Dec 1 2006, Collection of Technical Papers - AIAA/AAS Astrodynamics Specialist Conference, 2006. p. 835-851 17 p. (Collection of Technical Papers - AIAA/AAS Astrodynamics Specialist Conference, 2006; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trajectories
Earth (planet)
Aeroassist
Spacecraft
Orbits
2005

Entry system options for human return from the Moon and Mars

Putnam, Z. R., Braun, R. D., Rohrschneider, R. R. & Dec, J. A., Dec 1 2005, Collection of Technical Papers - AIAA Atmospheric Flight Mechanics Conference 2005. p. 449-462 14 p. (Collection of Technical Papers - AIAA Atmospheric Flight Mechanics Conference; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Moon
Trajectories
Launch vehicles
Deceleration
Ballistics
2002

A conceptual design environment for technology selection and performance optimization for torpedoes

Fitzgerald, C. J., Weston, N. R., Putnam, Z. R. & Mavris, D. N., Jan 1 2002.

Research output: Contribution to conferencePaper

Conceptual design
Propulsion
Thermoanalysis
Physics
Systems analysis