"""
Python module for the computation of the maximum sizing loads.
"""
# This file is part of FAST-OAD : 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 numpy as np
import openmdao.api as om
from ..constants import SERVICE_SIZING_LOADS_MAX
[docs]
@oad.RegisterSubmodel(SERVICE_SIZING_LOADS_MAX, "fastoad.submodel.loads.maximum_sizing.legacy")
class SizingLoadsEnvelope(om.ExplicitComponent):
"""
Computes CS25 sizing loading
"""
[docs]
def setup(self):
self.add_input("data:mission:sizing:cs25:envelope:max_sizing_load_1", units="N")
self.add_input("data:mission:sizing:cs25:envelope:max_sizing_load_2", units="N")
self.add_input("data:mission:sizing:cs25:envelope:max_load_factor_1", units="unitless")
self.add_input("data:mission:sizing:cs25:envelope:max_load_factor_2", units="unitless")
self.add_output("data:mission:sizing:cs25:sizing_load", units="N")
self.add_output("data:mission:sizing:cs25:sizing_load_factor", units="unitless")
[docs]
def setup_partials(self):
self.declare_partials(
"data:mission:sizing:cs25:sizing_load",
"*",
method="fd",
)
self.declare_partials(
"data:mission:sizing:cs25:sizing_load_factor",
"*",
method="fd",
)
[docs]
def compute(self, inputs, outputs, discrete_inputs=None, discrete_outputs=None):
n1m1 = inputs["data:mission:sizing:cs25:envelope:max_sizing_load_1"]
n2m2 = inputs["data:mission:sizing:cs25:envelope:max_sizing_load_2"]
n1 = inputs["data:mission:sizing:cs25:envelope:max_load_factor_1"]
n2 = inputs["data:mission:sizing:cs25:envelope:max_load_factor_2"]
id_max = int(np.argmax([n1m1, n2m2]))
nm = [n1m1, n2m2][id_max]
n = [n1, n2][id_max]
outputs["data:mission:sizing:cs25:sizing_load"] = nm
outputs["data:mission:sizing:cs25:sizing_load_factor"] = n