Summary

• Zero-D Results Indicate Isp Benefit Ranges from Large (Low OPR) to Small (Infinite OPR)

• One-D Results Justify Zero-D

  • First Pulse Differs from Periodic Solution

• Two-D Results Show Strong Pressure Variations at Exit Plane

  • End Correction Increases Isp by 3 - 5%
  • Isolated PDE Not Realistic
  • Exit Choked through Much of Cycle

• Multi-Tube Model Shows Common Nozzle Effective at Vacuum Conditions

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