The extendable nozzle allows for efficient vacuum propulsion without taking up too much space
*Credits to @BahamutoD for BDAnimationModules.dll (CC-BY-SA)
------- KSP 1.3 -------
v1.0.3
- Adjusted engine TWR
- Slight texture changes
v1.0.2
- Fixed engine heating animations
v1.0.1
- Fixed stupid mistake of not including BDAnimationModules.dll in download
v1.0
- Release!
For more info and my other projects, visit the KSP Forums