You make me suddenly, intensely curious to find out what a Reynolds number is and why it can make streamlining increase drag. I am also abruptly realising that I know less than I thought about STEM fields, given I just kind of assumed that astrophysicists were the official People Who Know About Space and therefore rocketry must be part of their domain. I don't know whether I want to ask if you can recommend any good fluid dynamics introductions, or whether I don't want to add to the several feet high pile of books next to my bed...

Okay - so why do you think quantum mechanics became more "cool" than fluid dynamics? Was there a time when fluid dynamics held the equivalent prestige and mystery that quantum mechanics has today? It clearly seems to be more useful, and something that you could easily become curious about just from everyday events like carrying a cup of tea upstairs and pondering how near-impossible it is not to spill a few drops if you've overfilled it.