this post was submitted on 29 Sep 2023
155 points (91.4% liked)
NonCredibleDefense
4283 readers
115 users here now
Militaria shitposting central! Post memes, tasteless jokes, and sexual cravings for military equipment and/or nuclear self-destruction!
Rules:
- Posts must abide by lemmy.world terms and conditions
- No spam or soliciting for money.
- No racism or other bigotry allowed.
- Obviously nothing illegal.
If you see these please report them.
Related communities:
For the other, slightly less political NCD, !noncredibledefense@sh.itjust.works
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
TIL hypersonic is genuinely a distinct word from supersonic.
It's usually over mach 5, but originally it was used to refer to when you start needing to deal with heating up the air.
Also around the point where jet engines kinda just stop working right.