def construct_launch_vehicle(stage_type,
prop_choice,
portion_reused,
ab_rec,
num_ab_engines=None,
num_rocket_engines=9):
"""Create a LaunchVehicle object given strategy choices and element masses.
Arguments:
stage_type: type of first stage vehicle, choose from 'winged' or 'ballistic'
prop_choice: propellant choice for first stage, choose from 'kerosene' or 'H2'
portion_reused: portion of first stage that is reused, choose from 'full', 'partial', or 'none'
ab_rec (boolean): specifies whether the recovery scheme is powered or not, True for powered
masses_dict: dictionary mapping vehicle element names to their dry masses in kg,
i.e. {'element_name': mass}
Returns:
instance of the LaunchVehicle class describing the launch vehicle
"""
stage2 = ExpendableBallisticStageStorable(name='s2', m=0)
stage2_engine = StorableTurboFed(name='e2', m=0)
veh_element_list = [stage2, stage2_engine]
if stage_type == 'ballistic' and prop_choice == 'H2' and portion_reused == 'none':
stage1 = ExpendableBallisticStageLH2(name='s1', m=0)
stage1_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_list = [stage1, stage1_engine]
elif stage_type == 'ballistic' and prop_choice == 'H2' and portion_reused == 'full':
stage1 = ReusableBallisticStageLH2(name='s1', m=0)
stage1_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_list = [stage1, stage1_engine]
elif stage_type == 'ballistic' and prop_choice == 'H2' and portion_reused == 'partial':
stage1_rec = ReusableBallisticStageLH2(name='s1', m=0)
stage1_disp = ExpendableTank(name='d1', m=0)
stage1_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_list = [stage1_rec, stage1_disp, stage1_engine]
elif stage_type == 'ballistic' and prop_choice == 'kerosene' and portion_reused == 'none':
stage1 = ExpendableBallisticStageStorable(name='s1', m=0)
stage1_engine = StorableTurboFed(name='e1', m=0)
stage1_list = [stage1, stage1_engine]
elif stage_type == 'ballistic' and prop_choice == 'kerosene' and portion_reused == 'full':
stage1 = ReusableBallisticStageStorable(name='s1', m=0)
stage1_engine = StorableTurboFed(name='e1', m=0)
stage1_list = [stage1, stage1_engine]
elif stage_type == 'ballistic' and prop_choice == 'kerosene' and portion_reused == 'partial':
stage1_rec = ReusableBallisticStageStorable(name='s1', m=0)
stage1_disp = ExpendableTank(name='d1', m=0)
stage1_engine = StorableTurboFed(name='e1', m=0)
stage1_list = [stage1_rec, stage1_disp, stage1_engine]
elif stage_type == 'winged' and prop_choice == 'H2' and portion_reused == 'full' and ab_rec:
stage1 = VTOStageFlybackVehicle(name='s1', m=0)
stage1_rocket_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_ab_engine = TurboJetEngine(name='ab', m=0)
stage1_list = [stage1, stage1_rocket_engine, stage1_ab_engine]
elif stage_type == 'winged' and prop_choice == 'H2' and portion_reused == 'full' and not ab_rec:
stage1_rec = VTOStageFlybackVehicle(name='s1', m=0)
stage1_rocket_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_list = [stage1_rec, stage1_rocket_engine]
elif stage_type == 'winged' and prop_choice == 'H2' and portion_reused == 'partial' and ab_rec:
stage1_rec = VTOStageFlybackVehicle(name='s1', m=0)
stage1_disp = ExpendableTank(name='d1', m=0)
stage1_rocket_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_ab_engine = TurboJetEngine(name='ab', m=0)
stage1_list = [
stage1_rec, stage1_disp, stage1_rocket_engine, stage1_ab_engine
]
elif stage_type == 'winged' and prop_choice == 'H2' and portion_reused == 'partial' and not ab_rec:
stage1_rec = VTOStageFlybackVehicle(name='s1', m=0)
stage1_disp = ExpendableTank(name='d1', m=0)
stage1_rocket_engine = CryoLH2TurboFed(name='e1', m=0)
stage1_list = [stage1_rec, stage1_disp, stage1_rocket_engine]
elif stage_type == 'winged' and prop_choice == 'kerosene' and portion_reused == 'full' and ab_rec:
stage1 = VTOStageFlybackVehicle(name='s1', m=0)
stage1_rocket_engine = StorableTurboFed(name='e1', m=0)
stage1_ab_engine = TurboJetEngine(name='ab', m=0)
stage1_list = [stage1, stage1_rocket_engine, stage1_ab_engine]
elif stage_type == 'winged' and prop_choice == 'kerosene' and portion_reused == 'full' and not ab_rec:
stage1 = VTOStageFlybackVehicle(name='s1', m=0)
stage1_rocket_engine = StorableTurboFed(name='e1', m=0)
stage1_list = [stage1, stage1_rocket_engine]
elif stage_type == 'winged' and prop_choice == 'kerosene' and portion_reused == 'partial' and ab_rec:
stage1_rec = VTOStageFlybackVehicle(name='s1', m=0)
stage1_disp = ExpendableTank(name='d1', m=0)
stage1_rocket_engine = StorableTurboFed(name='e1', m=0)
stage1_ab_engine = TurboJetEngine(name='ab', m=0)
stage1_list = [
stage1_rec, stage1_disp, stage1_rocket_engine, stage1_ab_engine
]
elif stage_type == 'winged' and prop_choice == 'kerosene' and portion_reused == 'partial' and not ab_rec:
stage1_rec = VTOStageFlybackVehicle(name='s1', m=0)
stage1_disp = ExpendableTank(name='d1', m=0)
stage1_rocket_engine = StorableTurboFed(name='e1', m=0)
stage1_list = [stage1_rec, stage1_disp, stage1_rocket_engine]
veh_element_list += stage1_list
if portion_reused == 'partial':
N_veh = 3
else:
N_veh = 2
launch_vehicle = LaunchVehicle(name='veh',
M0=0,
N=N_veh,
element_list=veh_element_list)
return launch_vehicle
from lvreuse.cost.vehicle import LaunchVehicle
from lvreuse.cost.indirect_ops import indirect_ops_cost
core = ExpendableBallisticStageStorable(
"s1",
27200 - 9 * 470) # stage - 9 engines, from space launch report, wikipedia
core_engine = ModernTurboFed("e1", 470) #
stage2 = ExpendableBallisticStageStorable(
"s2", 4500 + 1900 -
470) # stage + fairing - engine, from spaceflight101, space launch report
stage2_engine = ModernTurboFed("e2", 470) #
falcon_elements = [core, core_engine, stage2, stage2_engine]
falcon9_block3 = LaunchVehicle(
name='Falcon 9 Block 3', M0=459.054, N=2,
element_list=falcon_elements) # mass from spaceX website
falcon9_engines_dict = {'e1': 9, 'e2': 1}
falcon9_f8_dict = {
's1': 1.0,
'e1': 1.0,
's2': 1.0,
'e2': 1.0,
'veh': 1.0,
'ops': 1.0
}
falcon_uncertainty_list = [
rdm.TriangularUncertainty('p_s1',
min_value=0.75,
mode_value=0.8,
max_value=0.85),
SRB = SolidPropellantBooster("b1", 39800) # data from Isakowitz p. 31
core_vehicle = ExpendableBallisticStageLH2(
"s1", 12200 - 1300) # data from Isakowitz, less engine
vulcain_engine = CryoLH2TurboFed("e1", 1300)
stage2 = ExpendableBallisticStageStorable(
"s2", 1200 + 1500 + 2025 + 716 - 111
) # data from Isakowitz, including VEB, short fairing, SPELTRA, less engine
aestus_engine = StorablePressureFed("e2", 111)
ariane5_element_list = [
SRB, core_vehicle, vulcain_engine, stage2, aestus_engine
]
ariane5G = LaunchVehicle(name="Ariane 5G",
M0=746,
N=4,
element_list=ariane5_element_list)
ariane_engines_dict = {'e1': 1, 'e2': 1, 'b1': 2}
ariane_f8_dict = {
's1': 0.86,
'e1': 0.86,
's2': 0.86,
'e2': 0.77,
'b1': 0.86,
'veh': 0.86,
'ops': 0.86
}
ariane_uncertainty_list = [
rdm.TriangularUncertainty('p_s1',
min_value=0.75,
aestus_engine = CryoLH2TurboFed("HM7B", 165)
aestus_engine_CER_vals = CERValues(aestus_engine.dev_a, aestus_engine.dev_x,
aestus_engine.prod_a, aestus_engine.prod_x)
aestus_engine_cost_factors = ElementCostFactors(f1=0.8,
f2=1.0,
f3=0.8,
f8=0.77,
f10=1.0,
f11=1.0,
p=0.9)
ariane5_element_list = [
SRB, core_vehicle, vulcain_engine, stage2, aestus_engine
]
ariane5ECA = LaunchVehicle(name="ariane5ECA",
M0=791,
N=4,
element_list=ariane5_element_list)
ariane5ECA_element_map = {
"P240": [SRB_CER_vals, SRB_cost_factors, 2],
"H173": [core_veh_CER_vals, core_veh_cost_factors, 1],
"vulcain2": [vulcain_engine_CER_vals, vulcain_engine_cost_factors, 1],
"ESC-A": [stage2_CER_vals, stage2_cost_factors, 1],
"HM7B": [aestus_engine_CER_vals, aestus_engine_cost_factors, 1]
}
ariane5_cost_factors = VehicleCostFactors(f0_dev=1.04**3,
f0_prod=1.02,
f6=1.0,
f7=1.0,
f8=0.86,
def setUp(self):
self.SRB = SolidPropellantBooster("SRB", 39300)
self.SRB_CER_vals = CERValues(self.SRB.dev_a, self.SRB.dev_x,
self.SRB.prod_a, self.SRB.prod_x)
self.SRB_cost_factors = ElementCostFactors(f1=1.1,
f2=1.0,
f3=0.9,
f8=0.86,
f10=1.0,
f11=1.0,
p=0.9)
self.core_vehicle = ExpendableBallisticStageLH2("core_vehicle", 13610)
self.core_veh_CER_vals = CERValues(self.core_vehicle.dev_a,
self.core_vehicle.dev_x,
self.core_vehicle.prod_a,
self.core_vehicle.prod_x)
self.core_veh_cost_factors = ElementCostFactors(f1=1.1,
f2=1.16,
f3=0.85,
f8=0.86,
f10=1.0,
f11=1.0,
p=0.9)
self.vulcain_engine = CryoLH2TurboFed("vulcain_engine", 1685)
self.vulcain_engine_CER_vals = CERValues(self.vulcain_engine.dev_a,
self.vulcain_engine.dev_x,
self.vulcain_engine.prod_a,
self.vulcain_engine.prod_x)
self.vulcain_engine_cost_factors = ElementCostFactors(f1=1.1,
f2=0.79,
f3=0.9,
f8=0.86,
f10=1.0,
f11=1.0,
p=0.9)
self.stage2 = ExpendableBallisticStageStorable("stage2", 2500)
self.stage2_CER_vals = CERValues(self.stage2.dev_a, self.stage2.dev_x,
self.stage2.prod_a,
self.stage2.prod_x)
self.stage2_cost_factors = ElementCostFactors(f1=0.9,
f2=1.09,
f3=0.9,
f8=0.86,
f10=1.0,
f11=1.0,
p=0.9)
self.aestus_engine = StorablePressureFed("aestus_engine", 119)
self.aestus_engine_CER_vals = CERValues(self.aestus_engine.dev_a,
self.aestus_engine.dev_x,
self.aestus_engine.prod_a,
self.aestus_engine.prod_x)
self.aestus_engine_cost_factors = ElementCostFactors(f1=0.8,
f2=1.0,
f3=0.8,
f8=0.77,
f10=1.0,
f11=1.0,
p=0.9)
ariane5_element_list = [
self.SRB, self.core_vehicle, self.vulcain_engine, self.stage2,
self.aestus_engine
]
self.ariane5 = LaunchVehicle("ariane5", 777, 4, ariane5_element_list)
self.ariane5_element_map = {
"SRB": [self.SRB_CER_vals, self.SRB_cost_factors, 2],
"core_vehicle":
[self.core_veh_CER_vals, self.core_veh_cost_factors, 1],
"vulcain_engine": [
self.vulcain_engine_CER_vals, self.vulcain_engine_cost_factors,
1
],
"stage2": [self.stage2_CER_vals, self.stage2_cost_factors, 1],
"aestus_engine":
[self.aestus_engine_CER_vals, self.aestus_engine_cost_factors, 1]
}
self.ariane5_cost_factors = VehicleCostFactors(f0_dev=1.04**3,
f0_prod=1.025,
f6=1.0,
f7=1.0,
f8=0.86,
f9=1.07,
p=0.9)
self.ariane_prod_nums = [1]
self.ariane_prod_nums3 = [1, 2, 3]
self.ariane5_ops_cost_factors = OperationsCostFactors(f5_dict={},
f8=0.86,
f11=1.0,
fv=0.9,
fc=0.85,
p=0.9)
self.launch_rate = 7
self.launch_nums_list = range(1, 10)
self.ariane5_sum_QN = 1.6
from lvreuse.cost.tools import cost_reduction_factor
from lvreuse.cost.elements import ExpendableBallisticStageStorable, ModernTurboFed
from lvreuse.cost.vehicle import LaunchVehicle
from lvreuse.cost.indirect_ops import indirect_ops_cost
core = ExpendableBallisticStageStorable(
"s1", 950 - 9 * 35) # stage - 9 engines, from spacelaunchreport
core_engine = ModernTurboFed("e1", 35) #
stage2 = ExpendableBallisticStageStorable(
"s2", 250 + 44 -
35) # stage + fairing - engine, from spacelaunchreport, rocketlabs
stage2_engine = ModernTurboFed("e2", 35) #
electron_elements = [core, core_engine, stage2, stage2_engine]
electron = LaunchVehicle(
name='Electron', M0=13.0, N=2,
element_list=electron_elements) # mass from rocketlabs
electron_engines_dict = {'e1': 9, 'e2': 1}
electron_f8_dict = {'s1': 1.0, 'e1': 1.0, 's2': 1.0, 'e2': 1.0, 'veh': 1.0}
electron_uncertainty_list = [
rdm.TriangularUncertainty('p_s1',
min_value=0.85,
mode_value=0.9,
max_value=0.95),
rdm.TriangularUncertainty('p_e1',
min_value=0.85,
mode_value=0.9,
max_value=0.95),
rdm.TriangularUncertainty('p_s2',
min_value=0.85,
mode_value=0.9,
from lvreuse.cost.vehicle import LaunchVehicle
from lvreuse.cost.indirect_ops import indirect_ops_cost
core = ExpendableBallisticStageStorable(
"s1", 20743 + 420 + 375 - 5480
) # CCB, data from Isakowitz, p. 77, includes core, booster and interstage adapter
core_engine = StorableTurboFed("e1", 5480) # RD-180
stage2 = ExpendableBallisticStageLH2(
"s2", 1914 + 2085 -
168) # centaur, data from Isakowitz, stage + short fairing - engine
stage2_engine = CryoLH2TurboFed("e2", 168) # RL-10A
atlas_elements = [core, core_engine, stage2, stage2_engine]
atlasV_401 = LaunchVehicle(name='Atlas V 401',
M0=334.5,
N=2,
element_list=atlas_elements)
atlasV_engines_dict = {'e1': 1, 'e2': 1}
atlasV_f8_dict = {
's1': 1.0,
'e1': 1.49,
's2': 1.0,
'e2': 1.0,
'veh': 1.0,
'ops': 1.0
}
atlas_uncertainty_list = [
rdm.TriangularUncertainty('p_s1',
min_value=0.75,
mode_value=0.8,
max_value=0.85),
import math
import matplotlib.pyplot as plt
import rhodium as rdm
import os.path
from lvreuse.cost.tools import cost_reduction_factor
from lvreuse.cost.elements import ExpendableBallisticStageStorable, SolidPropellantVehicleStage, StorableTurboFed
from lvreuse.cost.vehicle import LaunchVehicle
from lvreuse.cost.indirect_ops import indirect_ops_cost
core = ExpendableBallisticStageStorable("s1", 18800 - 2 * 2350) # stage - engines, from spacelaunchreport,
core_engine = StorableTurboFed("e1", 2350) # from russianspaceweb
stage2 = SolidPropellantVehicleStage("s2", 2100 + 972) # stage + fairing, from Isakowitz
antares_elements = [core, core_engine, stage2]
antares230 = LaunchVehicle(name='antares230', M0=286, N=2, element_list=antares_elements) # mass from spacelaunchreport
antares_engines_dict = {'e1': 2}
antares_f8_dict = {'s1': 1.0, 'e1': 1.49, 's2': 1.0, 'veh': 1.0, 'ops': 1.0}
antares_uncertainty_list = [
rdm.TriangularUncertainty('p_s1', min_value=0.75, mode_value=0.8, max_value=0.85),
rdm.TriangularUncertainty('p_e1', min_value=0.75, mode_value=0.8, max_value=0.85),
rdm.TriangularUncertainty('p_s2', min_value=0.75, mode_value=0.8, max_value=0.85),
rdm.TriangularUncertainty('f0_prod_veh', min_value=1.02, mode_value=1.025, max_value=1.03),
rdm.TriangularUncertainty('f9_veh', min_value=1.03, mode_value=1.04, max_value=1.05),
rdm.TriangularUncertainty('f10_s1', min_value=0.75, mode_value=0.8, max_value=0.85),
rdm.TriangularUncertainty('f10_e1', min_value=0.75, mode_value=0.8, max_value=0.85),
rdm.TriangularUncertainty('f10_s2', min_value=0.75, mode_value=0.8, max_value=0.85),
]
antares_ops_uncertainty_list =[