35 lines
972 B
Python
35 lines
972 B
Python
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# BALLOON
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m_pl = 10.0 # payload mass in [kg]
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m_film = 1.0 # mass balloon film in [kg]
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m_gas = 1.7645 # 1.60391061452 # lifting gas mass in [kg]
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V_max = 9999999 # maximum fillable balloon volume in [m^3]
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# THERMO-OPTICAL
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alpha_VIS = 0.024
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r_VIS = 0.06
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tau_VIS = 0.916
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epsilon = 0.1
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alpha_IR = 0.1
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tau_IR = 0.86
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r_IR = 0.04
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c_f = 2092 # [J/(kg*K)]
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epsilon_ground = 0.9
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Albedo = 0.2
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T_ground = 273.15
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# DRAG
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c_d = 0.47 # drag coefficient balloon (spherical) [-]
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c_virt = 0
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# SIMULATION
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t_end = 10000 # maximum simulation time in [s]
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dt = 0.1 # simulation time step in [s]
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start_height = 0.0 # start altitude in [m]
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start_lat = 0.0 # start latitude in [deg]
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start_lon = 0.0 # start longitude in [deg]
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start_utc = '2020-12-13 12:00:00.000' # start date and time in UTC
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p_0 = 1013.25 # sea-level pressure
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