commit 408b1fb3ba1bda131a6c4a6da90142a58137068b Author: William Johnstone Date: Thu Oct 3 11:34:30 2024 +0100 initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..63c604c --- /dev/null +++ b/.gitignore @@ -0,0 +1,162 @@ +# ---> Python +# Byte-compiled / optimized / DLL files +__pycache__/ +*.py[cod] +*$py.class + +# C extensions +*.so + +# Distribution / packaging +.Python +build/ +develop-eggs/ +dist/ +downloads/ +eggs/ +.eggs/ +lib/ +lib64/ +parts/ +sdist/ +var/ +wheels/ +share/python-wheels/ +*.egg-info/ +.installed.cfg +*.egg +MANIFEST + +# PyInstaller +# Usually these files are written by a python script from a template +# before PyInstaller builds the exe, so as to inject date/other infos into it. +*.manifest +*.spec + +# Installer logs +pip-log.txt +pip-delete-this-directory.txt + +# Unit test / coverage reports +htmlcov/ +.tox/ +.nox/ +.coverage +.coverage.* +.cache +nosetests.xml +coverage.xml +*.cover +*.py,cover +.hypothesis/ +.pytest_cache/ +cover/ + +# Translations +*.mo +*.pot + +# Django stuff: +*.log +local_settings.py +db.sqlite3 +db.sqlite3-journal + +# Flask stuff: +instance/ +.webassets-cache + +# Scrapy stuff: +.scrapy + +# Sphinx documentation +docs/_build/ + +# PyBuilder +.pybuilder/ +target/ + +# Jupyter Notebook +.ipynb_checkpoints + +# IPython +profile_default/ +ipython_config.py + +# pyenv +# For a library or package, you might want to ignore these files since the code is +# intended to run in multiple environments; otherwise, check them in: +# .python-version + +# pipenv +# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. +# However, in case of collaboration, if having platform-specific dependencies or dependencies +# having no cross-platform support, pipenv may install dependencies that don't work, or not +# install all needed dependencies. +#Pipfile.lock + +# poetry +# Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control. +# This is especially recommended for binary packages to ensure reproducibility, and is more +# commonly ignored for libraries. +# https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control +#poetry.lock + +# pdm +# Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control. +#pdm.lock +# pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it +# in version control. +# https://pdm.fming.dev/#use-with-ide +.pdm.toml + +# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm +__pypackages__/ + +# Celery stuff +celerybeat-schedule +celerybeat.pid + +# SageMath parsed files +*.sage.py + +# Environments +.darwin_venv +.env +.venv +env/ +venv/ +ENV/ +env.bak/ +venv.bak/ + +# Spyder project settings +.spyderproject +.spyproject + +# Rope project settings +.ropeproject + +# mkdocs documentation +/site + +# mypy +.mypy_cache/ +.dmypy.json +dmypy.json + +# Pyre type checker +.pyre/ + +# pytype static type analyzer +.pytype/ + +# Cython debug symbols +cython_debug/ + +# PyCharm +# JetBrains specific template is maintained in a separate JetBrains.gitignore that can +# be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore +# and can be added to the global gitignore or merged into this file. For a more nuclear +# option (not recommended) you can uncomment the following to ignore the entire idea folder. +#.idea/ \ No newline at end of file diff --git a/Aircraft Design and Performance - Assignment 1 - William Johnstone.docx b/Aircraft Design and Performance - Assignment 1 - William Johnstone.docx new file mode 100644 index 0000000..4a4feb3 Binary files /dev/null and b/Aircraft Design and Performance - Assignment 1 - William Johnstone.docx differ diff --git a/README.md b/README.md new file mode 100644 index 0000000..25673bf --- /dev/null +++ b/README.md @@ -0,0 +1,3 @@ +# uni-raymers + +Code for estimating aircraft characteristics for the aircraft design module. \ No newline at end of file diff --git a/Raymers Code/raymers.py b/Raymers Code/raymers.py new file mode 100644 index 0000000..65fdfa4 --- /dev/null +++ b/Raymers Code/raymers.py @@ -0,0 +1,39 @@ +import matplotlib.pyplot as plt + +def raymers_iterate(current_max_weight, payload_weight, fuel_weight, a_constant, c_constant, variable_sweep_constant): + empty_max_weight_ratio = (a_constant * current_max_weight**c_constant * variable_sweep_constant) + + new_max_weight = payload_weight / (1 - (fuel_weight / current_max_weight) - (empty_max_weight_ratio)) + return new_max_weight + +payload_mass_metric = 125 # Grams +payload_mass_imperial = payload_mass_metric * 0.002204623 # Converting grams to pounds + +a_constant = 0.86 # Sailplane - Unpowered +c_constant = -0.05 # Sailplane - Unpowered + +max_weight_guess = 6 # Initial weight guess of 6 lbs +current_estimate = max_weight_guess + +imperial_estimates = [] + +for i in range(0,11): + current_estimate = raymers_iterate(current_estimate, payload_mass_imperial, 0, a_constant, c_constant, 1) + imperial_estimates.append(current_estimate) + +metric_estimates = [] + +for imperial_estimate in imperial_estimates: + metric_estimates.append(imperial_estimate / 0.002204623) + +plt.plot(metric_estimates, linestyle='--', marker='o') + +# Add labels to each point +for index, weight in enumerate(metric_estimates): + plt.text(index, weight + 5, f'{index}: {weight:.2f}', fontsize=9, ha='right') + +plt.title("Aircraft Raymer's Method Weight Estimation") +plt.xlabel("Iteration Number") +plt.ylabel("Weight Estimation (g)") +plt.grid(True) +plt.show() \ No newline at end of file diff --git a/weight_plot.png b/weight_plot.png new file mode 100644 index 0000000..cdc11a8 Binary files /dev/null and b/weight_plot.png differ