DARPA Teases New X-Plane With Hybrid-Electric Propulsion
![DARPA Teases New X-Plane With Hybrid-Electric Propulsion](https://assets.realclear.com/images/65/654664_1_.jpeg)
The Defense Advanced Research Projects Agency (DARPA) has revealed the official designation of a next-generation X-plane it currently has under development.
The...
The Defense Advanced Research Projects Agency (DARPA) has revealed the official designation of a next-generation X-plane it currently has under development.
The...