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Electric Propulsion System Setup

From PCDU. Electric Propulsion System Setup. S/C Communication. PPU. 1. T. XENON TANK. 2. 11. S. 3. P. 5. 4. 6. 7. 0.2 m. P. T. 8. HALL THRUSTER. 9. 10. Thermal System. Power / Intercomm. Xenon System. No redundancies, no integration costs.

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Electric Propulsion System Setup

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  1. From PCDU Electric Propulsion System Setup S/C Communication PPU 1 T XENON TANK 2 11 S 3 P 5 4 6 7 0.2 m P T 8 HALL THRUSTER 9 10 Thermal System Power / Intercomm Xenon System • No redundancies, no integration costs

  2. Electric Propulsion System Specifications

  3. Other Propulsion Options • LOx/LH2 would require an extra 600 kg, costing an extra $2.6M • An ion thruster could accomplish the mission, but would require much more power than the HET • Current technology places HET lifetime over 1 year

  4. Xenon Storage Thermal Analysis • Maximize storage pressure for volume • efficiency (~ 150 bar) • Maintain tank temperature for gaseous Xenon phase: •  Balance heat due to radiation and pressure drop • with a 5 watt resistance heater • Curve data from National Institute of Standards and Technology Supercritical Storage Region Liquid Gas Allowed temperature path of propellant Temperature (K)

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