Anonymous ID: 98ef5c Dec. 24, 2018, 1:36 p.m. No.4454851   🗄️.is 🔗kun

>>4454810

>>4454773

 

>only twice as fast as an F-16.

 

more than about mach 3.5 or so, conventional aircraft materials cannot stand the heat stress.

 

hypersonic is whole nother realm of exotics.