The one on the bottom doesn't appear to have a coning problem...
The one on the top is the result of a typical photo from a focal-plane shutter. As the shutter opening moves from right to left across the film, the blades have time to turn and appear bent. Confirm this with the tail rotor (looks like a boomerang) and the blade on the far side of the tailboom, with only the tip painting on the film and looking like it doesn't belong to the aircraft.
There was a beauty on another thread of a tiny old (1940s) chopper and the shutter made it appear that the two-bladed rotor system had both blades on the same side of the mast.
Last edited by Ascend Charlie; 3rd Jun 2003 at 17:58.