Use Specific Impulse instead of Exhaust Gas Velocity:
Because c is difficult to measure directly.
c = g*Isp (g = 9.8066 m/sec2)
Specific Impulse, Isp, depends on 2 quantities
that are more easily measured to high precision:
Isp = Thrust / Propellant mass flow rate
Copyright (c) 2000 by Rainier Anacker
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