NATO reporting name: Firkin

The S-37 multirole fighter technology demonstrator was redesignated Su-47 in 2000. Although no further production is planned (and the Irkutsk-built second flying prototype will not be completed) the sole Su-47 continues to fly as a technology demonstrator for a future generation of Russian combat aircraft.

The article appears in the following publication:
Jane's All the World's Aircraft 2004-2005. Jane's Information Group Ltd. 2004. ISBN: 0-7106-2614-2