"""
Main component for mass breakdown.
"""
# This file is part of FAST-OAD_CS23 : A framework for rapid Overall Aircraft Design
# Copyright (C) 2022 ONERA & ISAE-SUPAERO
# FAST is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import fastoad.api as oad
import numpy as np
from fastoad.module_management.constants import ModelDomain
from openmdao.core.explicitcomponent import ExplicitComponent
[docs]@oad.RegisterOpenMDAOSystem("fastga.loop.mtow", domain=ModelDomain.OTHER)
class UpdateMTOW(ExplicitComponent):
"""
Computes Maximum Take-Off Weight from Maximum Zero Fuel Weight and fuel weight.
"""
[docs] def setup(self):
self.add_input("data:weight:aircraft:ZFW", val=np.nan, units="kg")
self.add_input("data:mission:sizing:fuel", val=np.nan, units="kg")
self.add_output("data:weight:aircraft:MTOW", 1500.0, units="kg")
self.declare_partials("data:weight:aircraft:MTOW", "data:weight:aircraft:ZFW", val=1.0)
self.declare_partials("data:weight:aircraft:MTOW", "data:mission:sizing:fuel", val=1.0)
[docs] def compute(self, inputs, outputs, discrete_inputs=None, discrete_outputs=None):
zfw = inputs["data:weight:aircraft:ZFW"]
m_fuel = inputs["data:mission:sizing:fuel"]
mtow = zfw + m_fuel
outputs["data:weight:aircraft:MTOW"] = mtow