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PIT – What it is

PIT – What it is. PIT - Pulsed Inductive Thruster NuPIT – Nuclear Pulsed Inductive Plasma Step after the grided ion thruster Advantage: No Electrode No electrode means that constant pulsing of the plasma will not lead to erroded electrode This leads to longer run time of the thruster

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PIT – What it is

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  1. PIT – What it is • PIT - Pulsed Inductive Thruster • NuPIT – Nuclear Pulsed Inductive Plasma • Step after the grided ion thruster • Advantage: No Electrode • No electrode means that constant pulsing of the plasma will not lead to erroded electrode • This leads to longer run time of the thruster • Radiation is main source of damage to inductive coil

  2. Why we care • Longer life than electrode thruster • Higher Specific Impulses (2000 – 5000 s) • Efficiencies up to 50% (relatively fixed) • Why I care? • Attracted to this due to passion for NEP and this seemed to be an advancement on the standard Ion Thruster

  3. Origins & How it works • Not sure of Origin • Perhaps comes after ion thruster • How it works • Pulsed plasma uses Lorentz force to throw ions • Gas usually used is ammonia • Explain the following diagrams to describe the ionization and discharge of the plasma

  4. Diagram style

  5. Future Prospects • Attractive for deep space missions due to efficiency at delivering payloads • Has yet to fly in space • Certain requirements for this tech to be attractive • Specific mass ~ 1 kg / kW • PITs are heavy and power hungry • Need capacitors to recharge in 5 to 10 ms to satisfy this

  6. References • Kurt A. Pulzin, Scaling and Systems Considerations in Pulsed Inductive Thrusters, NASA-Marshall Space Flight Center, USA, Presented 17-20 September 2007 • Dailey and Lovberg, The PIT MkV Pulsed Inductive Thruster, NASA-Lewis Research Center, USA, July 1993 • Frisbee and Mikellides, The Nuclear-Electric Pulsed Inductive Thruster (NuPIT): Mission Analysis for Prometheus, Jet Propulsion Laboratory, California Institute of Technology, USA, 10-13 July 2005 • Pavlos G. Mikellides, Pulsed Inductive Thruster (PIT): Modeling and Validation Using the MACH2 Code, NASA-Glenn Research Center, USA, 17-21 March 2003 • “High-Power Electromagnetic Thruster Being Developed.” Online. Available: http://www.grc.nasa.gov/WWW/RT/RT2001/5000/5430lapointe.html 9 March 2008

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