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from rocketcea.biprop_utils.rho_isp_plot_obj import RhoIspPlot
from rocketcea.biprop_utils.veh_stage_obj import ReferenceStage
stg_obj = ReferenceStage(volCuInRef=441.0 , WtInertRef=20.0, WtPayload=30.0,
Name='N2H4 DACS')
rp = RhoIspPlot(bipropL=[('N2O4','MMH'), ('CLF5','N2H4')],
monopropL=['HYD40', 'HAN315', 'HAN269'])
rp.add_rho_isp_contours(label_frac_pos=0.2)
rp.add_stage_param_contours( stg_obj, set_param='GLOW', param_value=64.0,
label_frac_posD={'GLOW':0.9, 'VolPropellant':.4},
plot_param_valD={'DeltaV':[1900, 2100, 2300, 2500, 2700, 2900, 3100, 3300],
'MassFrac':[.44, .46, .48, .5, .52],
'VolPropellant':[350, 375, 400, 425, 450]},
plot_paramL=['DeltaV','VolPropellant'], num_ticks=6)
rp.savefig('divert_veh.png', dpi=120)
rp.show()
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