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from rocketcea.biprop_utils.rho_isp_plot_obj import RhoIspPlot
from rocketcea.biprop_utils.veh_stage_obj import ReferenceStage
#rp = RhoIspPlot(bipropL=[('LOX','LH2'),('N2O4','MMH')], nsteps_sg=119, nsteps_isp=119)
rp = RhoIspPlot()
stg_obj = ReferenceStage( WtPayload=10000.0 )
rp.add_rho_isp_contours(label_frac_pos=0.2)
rp.add_stage_param_contours( stg_obj, set_param='DeltaV', param_value=5000.0,
plot_param_valD={'GLOW':[20000, 19000, 18000, 17000, 16000],
'MassFrac':[.65,.7,.75,.8,.85],
'CubicFt':[75,100,200,300,400]},
label_frac_posD={'GLOW':0.9, 'CubicFt':.4},
plot_paramL=['GLOW','CubicFt','MassFrac'], num_ticks=6)
rp.savefig('rho_veh_1.png', dpi=120)
rp.show()
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