4 ms·
You might as well have linked to an ICBM page. X-51 is unmanned, and hasn't flown at mach 5 for longer than 4 minutes.
by imaginenore 12y ago
You might as well have linked to an ICBM page.
X-51 is unmanned, and hasn't flown at mach 5 for longer than 4 minutes.
- madaxe_again 12y agoIt is however a winged craft with an air breathing engine, commonly known as "a plane".