equation yields an exhaust velocity v_e = 2802 m/s, or 2.80 km/s, which is consistent with above typical values.

Technical literature often interchanges without note the universal gas law constant R, which applies to any ideal gas, with the gas law constant R_s, which applies only to a specific individual gas of molar mass M. The relationship between the two constants is R_s = R/M.

Mass flow rate

In accordance with conservation of mass the mass

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