> concept for the 787 Such designs come up every once in a while in civil aviation - but then disappear, mostly because they would require new (expensive) airp

> concept for the 787 Such designs come up every once in a while in civil aviation - but then disappear, mostly because they would require new (expensive) airport infrastructure. Just remember that when the A380 came out, every major airport that was a viable A380 destination started increasing their landing strip length, assuring the taxiways could handle the extra weight, worked on their baggage handling and check-in capacity and created gates that had more boarding bridges. Now imagine what basically triangular aircraft would mean for that infrastructure.