Propfans.
Something to discuss/argue about going into the new year.
Both Boeing and Airbus are bringing out upgrades soon,Max and Neo,to get better fuel efficiency from their airframes.Why not go the whole hog and bring out propfans.
The 717 was used as a test bed,back then it was the MD87 I think.Airbus are building the A400,while not a propfan is one step down and the experience would not go astray.
What do the PPruners of the world think.