"""
Python module for horizontal tail efficiency calculation, part of the horizontal tail 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
import fastoad.api as oad
from ..constants import SERVICE_HT_EFFICIENCY, SUBMODEL_HT_EFFICIENCY_LEGACY
[docs]@oad.RegisterSubmodel(SERVICE_HT_EFFICIENCY, SUBMODEL_HT_EFFICIENCY_LEGACY)
class ComputeHTEfficiency(om.ExplicitComponent):
# TODO: Document equations. Cite sources
"""Horizontal tail dynamic pressure reduction due to geometric positioning."""
# pylint: disable=missing-function-docstring
# Overriding OpenMDAO setup
[docs] def setup(self):
self.add_input("data:geometry:has_T_tail", val=np.nan)
self.add_output("data:aerodynamics:horizontal_tail:efficiency")
self.declare_partials(
of="data:aerodynamics:horizontal_tail:efficiency",
wrt="data:geometry:has_T_tail",
method="exact",
)
# 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):
outputs["data:aerodynamics:horizontal_tail:efficiency"] = (
0.9 + 0.1 * inputs["data:geometry:has_T_tail"]
)
# pylint: disable=missing-function-docstring, unused-argument
# Overriding OpenMDAO compute_partials, not all arguments are used
[docs] def compute_partials(self, inputs, partials, discrete_inputs=None):
partials["data:aerodynamics:horizontal_tail:efficiency", "data:geometry:has_T_tail"] = 0.1