- Nov 28, 2003
- Grand Junction, Colorado
Nope, it's not sag, it's anhedral to help counteract the dutch roll tendency of swept wings at high Cl. If what you said about adequate stiffness being too heavy were correct it would also be true of all other planes with a similar aspect ratio. A google image search on "c-5 galaxy" will turn up some pictures of it in flight that show the anhedral is still there.I thought that this was because the wings sag when on the ground, but level out when in flight due to the lift. If you made a wing stiff enough to not sag when on the ground then it would be too heavy.