# Parkin Research

> Parkin Research LLC is advancing the state of the art in directed energy propulsion and model\-based systems engineering\. It was founded in 2015 by Dr\. Kevin Parkin in San Francisco, California\.

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## Pages
- [About](https://parkinresearch.com/about/)
- [Contact](https://parkinresearch.com/contact/)
- [3D Orbit Calculator](https://parkinresearch.com/engineering-inference-engine/3d-orbit-calculator/)
- [Ballistic Entry Calculator](https://parkinresearch.com/engineering-inference-engine/ballistic-entry/)
- [Microwave and Laser Thermal Rockets](https://parkinresearch.com/microwave-thermal-rockets/)
- [Engineering Inference Engine](https://parkinresearch.com/engineering-inference-engine/)
- [Interstellar](https://parkinresearch.com/interstellar/)
- [Orbit Calculator](https://parkinresearch.com/engineering-inference-engine/orbit/)

## 3D FlipBook
- [A Starshot Communication Downlink](https://parkinresearch.com/3d-flip-book/a-starshot-communication-downlink/)
- [The Breakthrough Starshot System Model](https://parkinresearch.com/3d-flip-book/the-breakthrough-starshot-system-model/)
- [Cost\-Optimal Laser\-Accelerated Lightsails](https://parkinresearch.com/3d-flip-book/cost-optimal-laser-accelerated-lightsails/)

## Optional
- [Sitemap index](https://parkinresearch.com/sitemap_index.xml)