It requires skill of cause loop diagram and Stella model. Your holistic semester

It requires skill of cause loop diagram and Stella model.
Your holistic semester project is to conduct a complete systems dynamics analysis of the space debris problem and submit a technical report and your working Stella model/simulation with a user interface. Your analysis of the problem and possible interventions will be based on the model that you create and use.
We will work on this extensively in class, and you are well advised to attend regularly as we progress.
You will have smaller intermediate draft deliverables that I will give you feedback on so that your final report and model are polished, complete, and of very high quality.
You may collaborate extensively during and outside of class on your ideas, approach to the problem, and so on. But the final Stella model and report that you submit must be entirely of your own composition.
New Satellite Launch Rate
There are several ways you can approach the launch rate of new satellites that are reasonable depending on your approach and how you justify it.
Assuming launches are exogenous (outside the system, “from the cloud”), here are 3 approaches that you can manage with what you have learned:
1) A constant launch rate that is the same number of satellites every year (e.g., the bathtub model). (OK, but the most difficult of the approaches to justify).
2) A launch rate that grows over time by some percentage; this is exponential growth. This can be accomplished a couple of different ways. If you want to do this, tell me and I can walk you through it. It is not hard.I can also try to get a molecule posted for it that you can use.
3) Something like a residence time for outflows from a stock, but in reverse. For example, assume that a new satellite constellation becomes functional every 3 years. It is composed of 15,000 satellites and 1/3 are launched per year; it will take three years (5000 sats per launch) to complete the constellation. Your flow is basically 1/3 of the constellation each year.
If you assume the number of satellite launches grows over time, you will have at least 2 converter variables connected to your new launch flow to make your assumptions or the parameters explicit and variable.
Remember that there is no feedback from the existing stock of active satellites. However, you could have a feedback loop where damaged and retired satellites get replaced through new launches.
Yes, you can have more than one type of flow for satellite launches (e.g., new satellites and “replacement” satellites).
Useful Links
About telecomm satellite constellations in LEO, https://blog.bliley.com/5-faq-answers-new-space-leo-satellite-constellations (Links to an external site.)
Reality check on possibility of satellite collisions, and facoid on the volume of LEO, https://www.popularmechanics.com/space/a6310/4303512/

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