"""
Python module for furniture mass calculation,
part of the Operating Empty Weight (OEW) estimation.
"""
# This file is part of FAST-OAD_CS23 : A framework for rapid Overall Aircraft Design
# Copyright (C) 2025 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 openmdao.api as om
from .constants import SERVICE_SEATS_MASS
from ..constants import SERVICE_FURNITURE_MASS, SUBMODEL_FURNITURE_MASS_LEGACY
[docs]@oad.RegisterSubmodel(SERVICE_FURNITURE_MASS, SUBMODEL_FURNITURE_MASS_LEGACY)
class FurnitureWeight(om.Group):
"""
Computes mass of furniture.
"""
[docs] def setup(self):
self.add_subsystem(
"seats_weight",
oad.RegisterSubmodel.get_submodel(SERVICE_SEATS_MASS),
promotes=["*"],
)
weight_sum = om.AddSubtractComp()
weight_sum.add_equation(
"data:weight:furniture:mass",
[
"data:weight:furniture:passenger_seats:mass",
"data:weight:furniture:passenger_seats:mass",
],
scaling_factors=[0.5, 0.5],
units="kg",
desc="Mass of aircraft furniture",
)
self.add_subsystem("furniture_weight_sum", weight_sum, promotes=["*"])