Just as a sort of FYI in case it isn't well known, commenting is a form of upvoting here, so the ideal response to let something fall off the front page an into obscurity is to just note it and move on :-). Eventually people think "Oh another plane story" and ignore it, and balance is restored.
I hope I'm not the only one enjoying the meta discussion going on, with interesting links to impressive aeronautical engineering feats pinging back and forth. I feel like HN decided to have an after-hours conversation on these planes, and a bunch of us get the pleasure to peek at a subinterest of apparently a bunch of hacker-types.