"""
Python module for fuselage dimension calculation, part of the fuselage geometry.
"""
# 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 numpy as np
import openmdao.api as om
from .compute_aircraft_length import ComputeAircraftLength
from .compute_fuselage_cabin_length import ComputeFuselageCabinLength
from .compute_fuselage_luggage_length import ComputeFuselageLuggageLength
from .compute_fuselage_max_height import ComputeFuselageMaxHeight
from .compute_fuselage_max_width import ComputeFuselageMaxWidth
from .compute_fuselage_npax import ComputeFuselageNPAX
from .compute_fuselage_pax_length import ComputeFuselagePAXLength
from .compute_fuselage_length_fd import ComputeFuselageLengthFD
from .compute_fuselage_length_fl import ComputeFuselageLengthFL
from .compute_fuselage_nose_length import ComputeFuselageNoseLength
from .compute_fuselage_rear_length import ComputeFuselageRearLength
[docs]class ComputeFuselageGeometryBasic(om.ExplicitComponent):
"""
Geometry of fuselage - Cabin length defined with total fuselage length input (no sizing).
"""
# pylint: disable=missing-function-docstring
# Overriding OpenMDAO setup
[docs] def setup(self):
self.add_input("data:geometry:fuselage:length", val=np.nan, units="m")
self.add_input("data:geometry:fuselage:front_length", val=np.nan, units="m")
self.add_input("data:geometry:fuselage:rear_length", val=np.nan, units="m")
self.add_output("data:geometry:cabin:length", units="m")
self.declare_partials("*", "data:geometry:fuselage:length", val=1.0)
self.declare_partials(
"*",
["data:geometry:fuselage:front_length", "data:geometry:fuselage:rear_length"],
val=-1.0,
)
# pylint: disable=missing-function-docstring, unused-argument
# Overriding OpenMDAO compute, not all arguments are used
[docs] def compute(self, inputs, outputs, discrete_inputs=None, discrete_outputs=None):
fus_length = inputs["data:geometry:fuselage:length"]
lav = inputs["data:geometry:fuselage:front_length"]
lar = inputs["data:geometry:fuselage:rear_length"]
# Cabin total length
cabin_length = fus_length - (lav + lar)
outputs["data:geometry:cabin:length"] = cabin_length
# pylint: disable=too-few-public-methods
[docs]class ComputeFuselageGeometryCabinSizingFD(om.Group):
# TODO: Document equations. Cite sources
"""
Geometry of fuselage - Cabin is sized based on layout (seats, aisle...) and HTP/VTP position
(Fixed tail Distance).
"""
# pylint: disable=missing-function-docstring
# Overriding OpenMDAO setup
[docs] def setup(self):
self.add_subsystem(
"number_of_passenger",
ComputeFuselageNPAX(),
promotes=["*"],
)
self.add_subsystem(
"passenger_area_length",
ComputeFuselagePAXLength(),
promotes=["*"],
)
self.add_subsystem(
"maximum_width",
ComputeFuselageMaxWidth(),
promotes=["*"],
)
self.add_subsystem(
"maximum_height",
ComputeFuselageMaxHeight(),
promotes=["*"],
)
self.add_subsystem(
"luggage_area_length",
ComputeFuselageLuggageLength(),
promotes=["*"],
)
self.add_subsystem(
"cabin_length",
ComputeFuselageCabinLength(),
promotes=["*"],
)
self.add_subsystem(
"nose_length",
ComputeFuselageNoseLength(),
promotes=["*"],
)
self.add_subsystem(
"fuselage_length",
ComputeFuselageLengthFD(),
promotes=["*"],
)
self.add_subsystem(
"aircraft_length",
ComputeAircraftLength(),
promotes=["*"],
)
self.add_subsystem(
"fuselage_rear_length",
ComputeFuselageRearLength(),
promotes=["*"],
)
# pylint: disable=too-few-public-methods
[docs]class ComputeFuselageGeometryCabinSizingFL(om.Group):
# TODO: Document equations. Cite sources
"""
Geometry of fuselage - Cabin is sized based on layout (seats, aisle...) and additional rear
length (Fixed Length).
"""
# pylint: disable=missing-function-docstring
# Overriding OpenMDAO setup
[docs] def setup(self):
self.add_subsystem(
"number_of_passenger",
ComputeFuselageNPAX(),
promotes=["*"],
)
self.add_subsystem(
"passenger_area_length",
ComputeFuselagePAXLength(),
promotes=["*"],
)
self.add_subsystem(
"maximum_width",
ComputeFuselageMaxWidth(),
promotes=["*"],
)
self.add_subsystem(
"maximum_height",
ComputeFuselageMaxHeight(),
promotes=["*"],
)
self.add_subsystem(
"luggage_area_length",
ComputeFuselageLuggageLength(),
promotes=["*"],
)
self.add_subsystem(
"cabin_length",
ComputeFuselageCabinLength(),
promotes=["*"],
)
self.add_subsystem(
"nose_length",
ComputeFuselageNoseLength(),
promotes=["*"],
)
self.add_subsystem(
"fuselage_length",
ComputeFuselageLengthFL(),
promotes=["*"],
)