Richard Whitcomb was one of them. The Area Rule, Supercritical airfoil, and the Winglet. It is interesting to see Oshkosh Attendee's with their name tags on, and walking by and just happened to reading one of a "Richard Whitcomb" in attendance when he was alive.
https://en.wikipedia.org/wiki/Richard_T._Whitcomb
What is interesting is Boeing has not opted for the Pratt and Whitney Geared Turbofan Engine which could yield them a 15% reduction in fuel consumption on the 737...
what is geared about it?
I worked on GG4 and GG8 engines for a few years, they both had dual spool low and high compressors
Geared?? fixed N1 and N2??