The Air Force Research Laboratory’s X-60A program recently achieved a key developmental milestone with the completion of integrated vehicle propulsion system verification ground testing.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/5e1efa21b2c49.jpg)
Source:
https://phys.org/news/2020-01-x-60a-vehicle-propulsion-verification.html