The illusion begins in nylon. Panels snap taut between arms and legs; from the ground, the silhouette can resemble a human bird, though it is a more austere machine, shaped only when air pressure arrives. No flight is made. It spends height, converting a fall into a long, directed glide.The romantic label fails. A wingsuit is an airfoil, and its claim rests on lift and drag, not an onboard source ...More