NASA X-planes
In the US aircraft system, “X” designates pilot projects testing new aviation tech. NASA conducts X-projects with the US Air Force at Edwards Air Force Base.
Science Magazine for Kids (12+)
Tag: Megaproject
In the US aircraft system, “X” designates pilot projects testing new aviation tech. NASA conducts X-projects with the US Air Force at Edwards Air Force Base.
Science Magazine for Kids (12+)