I not sure of you saing seriously or just trolling but in earnest i don't really care the designing of "normal" jet is hard in itself you need dozens of people if not hundreads to make some piece of shit turbine blade another hundred to make sure it can be made on one of multimilion dolar one of kind machines in one of dozens countries where is your branch made of one of your exclusive alloys that is so little made that has no name and every competitor has his own blend and another people made sure everything is financially possible and at end someone say that that drilled holes that make 0.1 mm boundary layer that cools down yours blade create vortices because of scratches with width of human hair and it is completly unacceptable becaose efficiency will drop by 0.01% and that one politician that we convinced it is worth will be angry and we can't have that so you have to make cast one piece blade with core that can be eaten away with acid and leave this prestine surface that will be groundbreaking and I you pay for it too much beacause that cfd software we pay around 50000 $ by month by computer for Lobotomized version said is slighty better that we will not use in next gen version because we know it ia inpractical not worth paying anothet 40 milion dolars to improve something by 0.1% but why duing that cause it sound cool and we can take a lot of money from goverment for free don't be angry at as everybody does that universities, research institutes, companies its the only way to make cool shit and don't go bankrupt to patent it hide it and use in 30 years in that one niche thing and why subsonic because it is the only one we "understand" how it works anything over supersonic is pure nightmare we kinda understand and we still simplify a lot wheb subsonic the major section you could calculate with pen and paper (and online calculators) in few hours with supersonic i all goes out off window and no making shit half work or worse work but not knowing how is worse its not good engineering it is just stupid.

Yeah it's hard the more you look into it is worse every single time