[mjevans]

The history of rocketry really took off during WW-II, and was further refined by the military (generic, but pretty much the nations that have successfully landed on the moon), further developing and releasing to civilian government, and eventually private interests.

If I were to make a guess extrapolation to air-flight we're probably still roughly in the 1940s. Private space flight is making things more standard and long-run production instead of one-offs; but we aren't there yet and haven't found workhorse designs that are both reliable and cheap. Experiments like this will hopefully help us get there.

[ncmncm]

30s, but OK.

Aircraft production was fully industrial going into the 40s.