FS2002/FS2004 SHORT S.A.4 Sperrin.
The Short SA.4 "Sperrin" was a British jet bomber design of the early 1950s built by Short Brothers and Harland of Belfast, popularly abbreviated "Shorts".
The exact requirements included a weight of 140,000 lb, the ability to fly to a target 1,739 miles distant at 500 knots from altitudes of 45,000-50,000 ft and be simple enough to maintain at overseas bases.
This request would be the foundation of the V-bombers.
The design known initially as SA.4 and later as the "Sperrin" had more in common with the Second World War designs than the new jet age.
It first flew in 1951.
by Kazunori Ito.