Probe Simulator

Python Simulation of a High Altitude Balloon ascent and descent.

Objective

Create a tool to help experiments involving HABs. Currently focusing efforts on the design of an Altitude Control System.

Screenshots

Dependencies

• numpy
• matplotlib
• plotly
• pandas
• grequests
• scipy

Please, use a virtual environment.

How to use

$ virtualenv .venv
$ source .venv/bin/activate
(.venv) $ pip3 install -r requirements.txt
(.venv) $ python3 main.py

Code Structure

• Balloon.py: Contains the numeric models (inside a Class) that calculate parameters, such as: drag, buoyance, volume and density
• Air.py: free functions that implement NASA's standard Atmosphere Model.
• Integrator.py and Simulator.py: Code taken from previous simulation project. Implements, simple 4th order Runge-Kutta integration.
• Utils.py: some conversion functions that don't have a good place yet
• Local.py: Placeholder for variables that could be of use in a future state of the project
• Universe.py: Mostly replaces Utils.py keeping purely mathematical formulas
• thirdparty/: Contains code from the Astra Simulator that handles Global Forecasting System communication and latitude/longitude conversions

The main.py code then creates an object of the class Balloon, and passes its collection o models to the Simulator, that then does the integration step.