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from rocketcea.cea_obj import CEA_Obj
C = CEA_Obj( oxName='N2O4', fuelName='MMH')
def show_perf( Pc=100.0, eps=10.0, MR=1.0 ):
IspVac, Cstar, Tc, MW, gamma = C.get_IvacCstrTc_ChmMwGam(Pc=Pc, MR=MR, eps=eps)
print( '%8.1f %8.1f %8.1f %8.1f %8.1f %8.1f %8.2f %8.4f '%\
(Pc, eps, MR, IspVac, Cstar, Tc, MW, gamma))
print(' Pc(psia) AreaRatio MixtureRatio IspVac(sec) Cstar(ft/sec) Tc(degR) MolWt gamma')
Pc = 250.0
eps = 50.0
for MR in [1.0 + i*0.1 for i in range(20)]:
show_perf( Pc=Pc, eps=eps, MR=MR )
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