"""
Python module for passenger number calculation with fixed fuselage length, part of the fuselage
dimension.
"""
# 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
[docs]class ComputeFuselageNPAX(om.ExplicitComponent):
"""
Computes number of pax cabin.
"""
# pylint: disable=missing-function-docstring
# Overriding OpenMDAO setup
[docs] def setup(self):
self.add_input("data:geometry:cabin:seats:passenger:NPAX_max", val=np.nan)
self.add_input("data:geometry:cabin:seats:passenger:count_by_row", val=np.nan)
self.add_output("data:geometry:cabin:NPAX")
self.declare_partials(of="*", wrt="*", method="fd")
# 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):
npax_max = inputs["data:geometry:cabin:seats:passenger:NPAX_max"]
seats_p_row = inputs["data:geometry:cabin:seats:passenger:count_by_row"]
# noinspection PyBroadException
npax = np.ceil(npax_max / seats_p_row) * seats_p_row
outputs["data:geometry:cabin:NPAX"] = npax