Here are the specs for the 250 lbf regeneratively cooled engine.
Fuel:
Kerosene
Oxidizer:
Liquid Oxygen (LOX)
Mixture ratio: 1.8
Thrust:
250 lbf
Chamber pressure: 265 psia
Chamber diameter: 2.66 inches
Chamber length: 3.94 inches
Nozzle throat dia.: 0.94 inches
Nozzle exit dia.: 2.01 inches
Injector pairs: 10
Fuel injection dia.: 0.046 inches
Oxidizer inj. dia.: 0.055 inches
Chamber temperature: 5564 Deg R (5104 Deg F)
Chamber material: 6061-T6 aluminum
Here is the design spreadsheet in
OpenOffice format and in
MS Excel format.
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