cleaned up
This commit is contained in:
parent
b6527552cd
commit
f803053f0d
|
|
@ -1,54 +1,82 @@
|
|||
from input.natural_constants import *
|
||||
|
||||
# BALLOON DATA
|
||||
m_pl = 917 #2174 # payload mass in [kg] (incl. flight-chain)
|
||||
m_bal_init = 540 #500 # initial ballast mass in [kg]
|
||||
m_film = 0.74074232733 * 1838 # mass balloon film in [kg]
|
||||
FreeLift = 10 # (initial) free lift in [%]
|
||||
m_pl = 2747 # payload mass in [kg] (incl. flight-chain)
|
||||
m_bal_init = 0 # initial ballast mass in [kg]
|
||||
m_film = 1883.77 # mass of balloon film in [kg]
|
||||
FreeLift = 10 # (initial) free lift in [%]
|
||||
V_design = 1120497.6 # (max.) balloon design volume in [m^3]
|
||||
|
||||
start_height = -25.9254 # start altitude in [m]
|
||||
start_lat = -77.8535 # start latitude in [deg]
|
||||
start_lon = 167.2022 # start longitude in [deg]
|
||||
start_utc = '2019-12-15 13:56:00.000' # start date and time in UTC
|
||||
simple = False # simple mode (no use of ERA5 radiation data)
|
||||
|
||||
c_virt = 0.37
|
||||
|
||||
t_sim = 25000 #1000000 # simulated flight duration in [s]
|
||||
|
||||
drag_model = 'Palumbo' # 'PalumboLow' # 'PalumboHigh' # 'Sphere_Re'
|
||||
|
||||
#ERA5_ascent = ['ERA5/ascent.nc'] # list of all ERA5 atmospheric data for ASCENT
|
||||
#ERA5_float = ['ERA5/float1.nc', 'ERA5/float2.nc'] # list of all ERA5 atmospheric data for FLOAT
|
||||
#ERA5_single = ['ERA5/radiation1.nc', 'ERA5/radiation2.nc'] # list of all ERA5 RADIATION data
|
||||
|
||||
ERA5_ascent = 'ERA5/ASCENT_McMurdo_2019_12.nc' # list of all ERA5 atmospheric data for ASCENT
|
||||
ERA5_float = 'ERA5/FLOAT_McMurdo_2019_12to2020_1.nc' # list of all ERA5 atmospheric data for FLOAT
|
||||
ERA5_single = 'ERA5/SINGLE_McMurdo_2019_12to2020_1.nc' # list of all ERA5 RADIATION data
|
||||
|
||||
|
||||
# BALLOON DATA STUDIO
|
||||
#m_pl = 917
|
||||
#m_bal_init = 540
|
||||
#m_film = 0.74074232733 * 1838 # scaled down proportional to volume decrease between Raven 39.57 and 29.47
|
||||
#FreeLift = 10
|
||||
#V_design = 834497.469
|
||||
|
||||
|
||||
|
||||
|
||||
# SIMULATION
|
||||
|
||||
start_height = 384.9 # start altitude in [m]
|
||||
start_lat = 67.887382 # start latitude in [deg]
|
||||
start_lon = 21.081452 # start longitude in [deg]
|
||||
start_utc_old = '2016-07-12 03:17:24.000' # start date and time in UTC
|
||||
start_utc = '2019-06-19 03:17:24.000' # start date and time in UTC
|
||||
# possible start dates: between May 22 and June 22
|
||||
simple = True
|
||||
# start_lat = 78.22 Svalbard
|
||||
# start_lon = 15.65
|
||||
|
||||
|
||||
# ONLY IN CASE OF APPLICATION OF SIMPLE MODEL:
|
||||
epsilon_ground = 0.95 # ground emissivity
|
||||
T_ground = 288.15 # ground temperature
|
||||
Albedo = 0.3 # total albedo
|
||||
##cc = 0.1 # cloud cover
|
||||
cc = 0 # cloud cover
|
||||
c_d = 0.47 # drag coefficient balloon (spherical) [-] # 0.8
|
||||
|
||||
m_gas_init = ((m_pl + m_film + m_bal_init) * (FreeLift/100 + 1))/(R_gas/R_air - 1) # lifting gas mass in [kg]
|
||||
|
||||
print("initial gas mass:")
|
||||
print(m_gas_init)
|
||||
print("Reading balloon data...")
|
||||
print("")
|
||||
print("Calculated initial gas mass based on free lift input:")
|
||||
print('{:.5}'.format(m_gas_init)+' kg')
|
||||
|
||||
#GROSSER BALLON
|
||||
# GROSSER BALLON
|
||||
#V_design = 1120497.6 # maximum fillable balloon volume in [m^3]
|
||||
#L_goreDesign = 1.914 * V_design ** (1/3)
|
||||
#c_ducts = 0.62
|
||||
#c_valve = 0.77 # estimated
|
||||
#A_ducts = 76.54 # estimated
|
||||
#A_valve = 0.140
|
||||
c_valve = 0.77 # estimated
|
||||
A_ducts = 76.54 # estimated
|
||||
A_valve = 0.140
|
||||
#t_open = 20 # time it takes to open vents in [s]
|
||||
#t_close = 20 # time it takes to open vents in [s]
|
||||
#m_baldot = m_bal_init/1375 # ballast mass drop rate in [kg/s]
|
||||
|
||||
# kleiner Ballon
|
||||
V_design = 834497.469 # maximum fillable balloon volume in [m^3]
|
||||
|
||||
L_goreDesign = 1.914 * V_design ** (1/3)
|
||||
c_ducts = 0.62
|
||||
c_valve = 0.72 # estimated
|
||||
A_ducts = 55.743 # estimated
|
||||
A_valve = 0.1297
|
||||
#c_valve = 0.72 # estimated for STUDIO balloon
|
||||
#A_ducts = 55.743 # estimated for STUDIO balloon
|
||||
#A_valve = 0.1297
|
||||
t_open = 20 # time it takes to open vents in [s]
|
||||
t_close = 20 # time it takes to open vents in [s]
|
||||
t_close = 20 # time it takes to close vents in [s]
|
||||
m_baldot = m_bal_init/1375 # ballast mass drop rate in [kg/s]
|
||||
|
||||
|
||||
|
|
@ -64,8 +92,4 @@ r_IR = 0.040
|
|||
c_f = 2092 # [J/(kg*K)] specific heat balloon film
|
||||
|
||||
|
||||
# DRAG
|
||||
# c_d = 0.47 # drag coefficient balloon (spherical) [-]
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue