Do these explain some UFO sightings?

These are some of a few examples of UAV's know to be developed.
Pictures are from "Advances in Unmanned Aerial Vehicles: State of the Art and the Road to Autonomy"

Ebook is available as a torrent for download:
www.mininova.org...

Most of the book deals with theory and a lot of math, however the first part has a number of pictures and sketches.




[edit on 21-6-2008 by FosterVS]

Undoubtedly. I've never seen a UFO (wish I had) and if one of these gizmos floated past, I'm pretty sure I and the neighborhood would believe that's what it was.

WG3