Oddities OutpostVideo: Flying “Heel Lift” Arup S2 and S4 Flying WingsAux ShoulderJuly 8, 2008March 5, 2024 by Aux ShoulderMarch 5, 2024March 5, 20240115 It is very unlikely that anyone would see an Arup heel-shaped airplane and believe it was made by aliens, so this is just a mildly...