Re: Pye Wacket
Not sure if this is related. Found on flickr
"Yes, the Navy DID spend a few hundred thousand dollars studying the feasibility of a disc-shaped missile system back in the 1970s.
This view of the model shows the rear of the unit - the main engine exhaust is on the edge of the disc. Also visible are the vectoring ports for maneuvering the missile, as well as the standard delivery system lugs on the top.
An artist's rendering (probably by Larry Zabel) showed the proposed system to be about three to three & one-half feet in diameter. I believe it was intended to match the terminal and lethal performance of the Sidewinder missile, but with a lot more maneuverability"
"Front view showing the guidance system window. I believe it was intended to use off-the-shelf components from the Sidewinder missile."