>>955
https://web.archive.org/web/20141023114435/http://www.janes.com/article/32190/pak-fa-stealth-features-patent-published

The papers claim that the radar cross-section (RCS) of an Su-27 was in the order of 10-15 m 2 ,
with the intention being to reduce the size of the RCS in the T-50 to an "average figure of 0.1-1 m 2 ".