"""
Airfoil reshape function
"""
# This file is part of FAST-OAD : A framework for rapid Overall Aircraft Design
# Copyright (C) 2020 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/>.
from importlib.resources import open_text
import numpy as np
from . import resources
from .profile import Profile
# FIXME: user currently has to know the name of available resources. A class would allow
# to provide more introspection.
[docs]def get_profile(file_name: str = "BACJ.txt", chord_length=1.0, thickness_ratio=None) -> Profile:
"""
Reads profile from indicated resource file and returns it after resize
:param file_name: name of resource
:param chord_length: set to None to get original chord length
:param thickness_ratio:
:return: the Profile instance
"""
with open_text(resources, file_name) as source:
x_z = np.genfromtxt(source, skip_header=1, delimiter="\t", names="x, z")
profile = Profile()
profile.set_points(x_z["x"], x_z["z"])
if thickness_ratio:
profile.thickness_ratio = thickness_ratio
if chord_length:
profile.chord_length = chord_length
return profile