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https://github.com/alancoding/spheres-of-influence
Orbital Metrics Calculators (with hopes of a Django app) with a Constraint-Based Model
https://github.com/alancoding/spheres-of-influence
orbital-mechanics planetary-data
Last synced: about 5 hours ago
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Orbital Metrics Calculators (with hopes of a Django app) with a Constraint-Based Model
- Host: GitHub
- URL: https://github.com/alancoding/spheres-of-influence
- Owner: AlanCoding
- Created: 2016-05-04T03:23:06.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2017-02-08T02:33:52.000Z (almost 8 years ago)
- Last Synced: 2024-11-09T04:39:19.257Z (about 2 months ago)
- Topics: orbital-mechanics, planetary-data
- Language: Python
- Size: 38.1 KB
- Stars: 0
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
## Spheres of Influence
This is a quick shot at making a library that will compute Delta V numbers
using python and best-practices with a class structure.
The goal is to answer questions asked in terms A->B trips. For instance,
"what is the velocity to escape Earth's gravity well starting at LEO at
400 km altitude?"
You could put this into Google:
```
sqrt(2*G*(mass of Earth)/(radius of Earth))-sqrt(G*(mass of Earth)/((radius of Earth)+(400 km))
```
That will get your answer, but it's a simple quesiton.
### Use
Run tests:
```
py.test soi/test_base.py
```
Show parser output:
```
python2.7 soi/parsers.py
```
### Sources
Planet data dump
http://nssdc.gsfc.nasa.gov/planetary/factsheet/
Moon data dump
- orbital
- http://www.windows2universe.org/our_solar_system/moons_table.html
- inclination:
- http://nineplanets.org/data.html
- physical
- http://ssd.jpl.nasa.gov/?sat_phys_par
Some details breaking down these data sources can be found in [data/README](data/README.md)
## Goals
- A python library that will take two locations and find the Delta V between them
- Network resource flow calculator - a numerical illustration of [Hop's vision](http://hopsblog-hop.blogspot.com/2013/09/one-legged-stools.html)
- Simple website (likely client-side scripting) that can calculate the first goal with selection boxes
I believe all these are very highly attainable, although they will push my own
limits to some degree (part of the point). Thus, I want to distinguish them
from the next set of goals.
- discrete simulations with time-domain actions within the network model
- A text-based website where users can make accounts and input data to create their own
network-defined resource flow numbers
- Ability to share this with a link
- A time-based website where users can build their time-domain actions in the
discrete simulation
## Links
To get going diving into the data, I [asked this on Space Stack Exchange](http://space.stackexchange.com/questions/15107/data-for-moons-in-the-solar-system-with-masses).
Once I hit 2 or 3 (or 1, I haven't decided yet), I'll bounce this around NASA
Spaceflight and possibly some other related communities.