# Project Hail Mary Spin Drive

"Following on from Dr. Grace's discovery, we've built an IR emitter set to the wavelength of CO2, which attracts the Astrophage to this revolver face. The drive then rotates outwards, yeah? We increase the IR, the Astrophage get excited, thrust the ship forward, and so on and so on." — Dr. Narender Sood, *Project Hail Mary (2026)*

A Kerbal Space Program parts mod inspired by Andy Weir's *[Project Hail Mary](https://en.wikipedia.org/wiki/Project_Hail_Mary)*.
Adds Astrophage-powered propulsion and some related parts to the game.

![The SpinDrive on a KSP model of the movie's Hail Mary.](Media/screenshot81.png)

(This is an unofficial fan-made mod and is not affiliated with Andy Weir or any Project Hail Mary production.)

## Parts

- **TC-96 "Komarov" Spin Drive**
- **TC-96-950 "DuBois" Spin Drive Cluster**
- **"Pepper" Astrophage Fuel Cell**
- *...and more to come!*

## Dependencies

These mods are required for this mod to run properly. You'll need to install each one (and their own dependencies) in order for this one to work.

- [Far Future Technologies](https://github.com/post-kerbin-mining-corporation/FarFutureTechnologies)
  - Needed for the spinning animation in the engines.
- [B9PartSwitch](https://github.com/blowfishpro/B9PartSwitch)
  - Fuel switches work through B9 Modules.

## Compatibilities
These mods are not required for the Spin Drive mod to run, but are currently supported through patches.

- [Near Future Launch Vehicles](https://github.com/post-kerbin-mining-corporation/NearFutureLaunchVehicles), [CryoTanks](https://github.com/post-kerbin-mining-corporation/CryoTanks/releases), and [ReStock Plus](https://github.com/PorktoberRevolution/ReStocked)
  - The Enriched Astrophage fuel subtype can be selected and used in supported fuel tanks.
- [Community Tech Tree](https://github.com/post-kerbin-mining-corporation/CommunityTechTree)
  - Astrophage technology can be properly unlocked in a science or career mode save.
- [Community Category Kit](https://github.com/UmbraSpaceIndustries/CommunityCategoryKit) and [VABOrganizer](https://github.com/KSPModStewards/VABOrganizer)
  - Astrophage technologies are sorted into their respective subcategories within the parts list, as well as within a standalone "Spin Drives" mod category.

## Installation

Download the latest ZIP from [the SpaceDock listing](https://spacedock.info/mod/4300/Project%20Hail%20Mary%20Spin%20Drive) (or [the GitHub repo's Releases page](https://github.com/NatoKerbal/Spin-Drive/releases)) and simply extract the folder directly into your KSP installation's `GameData` folder using File Explorer's "Extract all" option. You may also extract the folder manually and place ONLY the `SpinDrive` folder inside `GameData`.

When done correctly, the path to the mod should look like this:

When done correctly, the path should look like this:
```
KerbalSpaceProgram/
└── GameData/
    ├── SpinDrive/
    │   ├── Parts/
    │   ├── Patches/
    │   └── ...
    ├── Squad/
    ├── YourOtherMods/
    └── ...
```

## Known Issues

- When [Interstellar Fuel Switch](https://spacedock.info/mod/175/Interstellar%20Fuel%20Switch) is installed, fuel tanks that use IFS' switcher (most of the stock ones) no longer receive the Enriched Astrophage fuel subtype. Tanks not affected by IFS remain unchanged, and this issue does not occur when Interstellar Fuel Switch Core is installed.

## Credits

- **[NoLifeJordan](https://github.com/nolifejordan)**, original mod author
- **[NatoKerbal](https://github.com/NatoKerbal)**, mod steward and developer
- **[QuantumsHevy](https://github.com/QuantumsHevy)**, contributor and hotfixer
- ***Project Hail Mary (2026)*** by Andy Weir

![A rear view of a KSP model of the movie's Hail Mary.](Media/screenshot78.png)

## License

[The MIT License](./LICENSE) (MIT)
Copyright © 2026

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
