Physical System

Gasesous Oxygen - Liquid Ethanol (95%) Rocket Engine

Piping & Instrumentation Diagram (P&ID) for ELLIE
Cross-sectional view of the ELLIE thrust chamber, injector, and load cells
  • Thruster:

    • Radiatively Cooled (Heat Sink) Combustion Chamber / Nozzle

    • Injector: Coaxial Shear element mixes compressible GOX with ethanol. Dampens pressure instability through 30% Combustion Pressure element flow resistance

    • Thrust Measurement: (Target 30lb thrust)

      • Three S-type load cells, together, measure total thrust force

    • Pressure Measurement:

      • Wheatsone Bridge Diaphram Pressure Transducers measure intense distributed forces

  • Feed System:

    • Energy Regulation:

      • Spring-Loaded Regulators and Stainless Steel Ball 2/3-way Valves.

      • High-Pressure copper tubing, braided stainless steel flex hoses.

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