Ever wonder what aviation might have looked like if engineers had taken a few more creative risks? These six pages celebrate the experimental aircraft that defied convention, from the egg-shaped Lockheed XFV that could hover like a helicopter to the sleek NASA AD-1 with its revolutionary pivoting wing. You'll find yourself coloring some of history's most imaginative flying machines, each one a fascinating "what if" that pushed the limits of what was possible in the sky.
