### Core team:

# Darren Lee Hitt

### University of Vermont

### Vermont Space Grant Consortium & NASA EPSCoR Program Director, Department of Mechanical Engineering, Professor

His research lies in the area of high-fidelity orbital mechanics (astrodynamics) simulations and the gravitational modeling required for these simulations. The particular focus lies in close-proximity orbits about small irregular celestial bodies, such as asteroids and comets, whose irregular topology and variable composition result in complex gravitational fields. In addition to this fundamental work, his research also involves mission trajectory planning and optimization using evolutionary computing approaches.

#### Most recent papers:

Darren Lee Hitt, Kevin R. Gagne, M. Ryan McDevitt .

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**A Dual Mode Propulsion System for Small Satellite Applications**. Aerospace, , 5, 2018.[pdf]

Darren Lee Hitt, William F. Louisos, Jason M Pearl.

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**Hybrid Gravity Model from Asteroid Surface Topology Read More: https://arc.aiaa.org/doi/abs/10.2514/6.2018-0955**. 2018 Space Flight Mechanics Meeting, , AIAA SciTech Forum, 2018.[pdf]

Darren Lee Hitt, Jason M Pearl, David W. Hinckley.

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**Evolutionary Optimization of Satellite Formation Topology for Ground Targeting Applications**. 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, , AIAA SciTech Forum, 2018.[pdf]

Darren Lee Hitt, David W. Hinckley.

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**Evolutionary Approach to Lambert’s Problem for Non-Keplerian Spacecraft Trajectories**. Aerospace, , 4, 2017.[pdf]

Darren Lee Hitt, David W. Hinckley.

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**Multi-Objective Optimization of Spacecraft Trajectories for Small-Body Coverage Missions**. 27th AAS/AIAA Space Flight Mechanics Meeting, , , 2017.[pdf]

William F. Louisos, Darren Lee Hitt, Chris Danforth.

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**Chaotic natural convection in a toroidal thermosyphon with heat flux boundaries**. International Journal of Heat and Mass Transfer, , , 2015.[pdf]

David W. Hinckley, Darren Lee Hitt, Margaret (Maggie) Eppstein.

[pdf] [journal page]

**Evolutionary optimization of satellite formation topology over a region of interest**. AIAA Guidance, Navigation, and Control Conferenc, 1554, , 2015.[pdf] [journal page]

Chris Danforth, Darren Lee Hitt, William F. Louisos.

[pdf] [journal page]

**Chaotic flow in a 2D natural convection loop with heat flux boundaries**. International Journal of Heat and Mass Transfer, , , 2013.[pdf] [journal page]

Chris Danforth, Darren Lee Hitt, El Hassan Ridouane, Kameron D. Harris.

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**Predicting flow reversals in chaotic natural convection using data assimilation**. Tellus, , , 2012.[pdf] [journal page]

Chris Danforth, Darren Lee Hitt, El Hassan Ridouane.

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**A Numerical Investigation of 3-D Flow Regimes in a Toroidal Natural Convection Loop**. International Journal of Heat and Mass Transfer, , , 2011.[pdf] [journal page]