1. Charge Exchange Containment Cell Ryan Bosworth, Doug Claes, Michael Johnson, and Trey Quiller The Exploration and Space Technology (EaST) Lab Dr. Andrew Ketsdever Department of Mechanical and Aerospace Engineering

2. Motivation Charge Exchange Process Charge Exchange Cell – Design Stage – Overview of completed system Results Introduction

3. Electronic Propulsion has high mass due to power systems $10,000 per pound of payload to LEO using the Atlas and Delta launch systems New propulsion called Electrode-less Lorentz Force Thruster or ELF Thruster Motivation

4. Charge Exchange Creating fast neutral particles to eject from the system Mainly momentum transfer between particles No kinetic energy lost Minimal deviation from trajectory Neutral Charge Exchange Gas Ion Beam Fast Neutrals Remaining Ions Vacuum

5. Designing the Device Main goals of design: – Contain a neutral gas in a vacuum environment – Vary neutral gas pressure – Constant neutral gas number density – Easy to machine device Went through an extensive design process

6. Building of Device

7. Experimental Testing Tested our best predicted configuration for best containment 200 milli-torr MKS differential pressure transducer Flow rates of 1, 5, 10, 15, 20, 25, 40, and 50 sccm Record chamber pressure, differential reading, and flow rates

8. Results

9. Thank you for your time.