"""
Group containing the computation of the aircraft profile drag based on the sum of the drag of
its components.
"""
# 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
from openmdao.core.group import Group
from ..constants import (
SUBMODEL_CD0_WING,
SUBMODEL_CD0_FUSELAGE,
SUBMODEL_CD0_HT,
SUBMODEL_CD0_VT,
SUBMODEL_CD0_NACELLE,
SUBMODEL_CD0_LANDING_GEAR,
SUBMODEL_CD0_OTHER,
SUBMODEL_CD0_SUM,
SUBMODEL_CD0,
)
[docs]@oad.RegisterSubmodel(SUBMODEL_CD0, "fastga.submodel.aerodynamics.aircraft.cd0.legacy")
class Cd0(Group):
[docs] def initialize(self):
self.options.declare("low_speed_aero", default=False, types=bool)
self.options.declare("propulsion_id", default="", types=str)
self.options.declare("airfoil_folder_path", default=None, types=str, allow_none=True)
self.options.declare(
"wing_airfoil_file", default="naca23012.af", types=str, allow_none=True
)
self.options.declare("htp_airfoil_file", default="naca0012.af", types=str, allow_none=True)
[docs] def setup(self):
options_wing = {
"airfoil_folder_path": self.options["airfoil_folder_path"],
"low_speed_aero": self.options["low_speed_aero"],
"wing_airfoil_file": self.options["wing_airfoil_file"],
}
self.add_subsystem(
"cd0_wing",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_WING, options=options_wing),
promotes=["*"],
)
low_speed_option = {"low_speed_aero": self.options["low_speed_aero"]}
self.add_subsystem(
"cd0_fuselage",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_FUSELAGE, options=low_speed_option),
promotes=["*"],
)
options_htp = {
"airfoil_folder_path": self.options["airfoil_folder_path"],
"low_speed_aero": self.options["low_speed_aero"],
"htp_airfoil_file": self.options["htp_airfoil_file"],
}
self.add_subsystem(
"cd0_ht",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_HT, options=options_htp),
promotes=["*"],
)
self.add_subsystem(
"cd0_vt",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_VT, options=low_speed_option),
promotes=["*"],
)
options_nacelle = {
"low_speed_aero": self.options["low_speed_aero"],
"propulsion_id": self.options["propulsion_id"],
}
self.add_subsystem(
"cd0_nacelle",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_NACELLE, options=options_nacelle),
promotes=["*"],
)
self.add_subsystem(
"cd0_l_gear",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_LANDING_GEAR, options=low_speed_option),
promotes=["*"],
)
self.add_subsystem(
"cd0_other",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_OTHER, options=low_speed_option),
promotes=["*"],
)
self.add_subsystem(
"cd0_total",
oad.RegisterSubmodel.get_submodel(SUBMODEL_CD0_SUM, options=low_speed_option),
promotes=["*"],
)