[Hatteras]

"This differs from the 1920s, when “flying saucers” began to appear..."

"Flying saucers" didn't begin to appear until a sighting in 1947(ish?) when the description was first used.

[21twelve]

The term flying saucer was coined then (near Mount Rainier, by a pilot that saw something while flying). I figure folks saw something similar, but nobody came up with a name that stuck?