Well 2101,2102 and 2103 are reported by Hudong as LRIP
But amazing pace on J20 programme
Assuming it is true that 2101, etc are LRIP and IOC in 2017 ... really amazing achievement for China
For comparison
F-22
First Flight 1997 (J-20 in 2011 --- 14 years later)
IOC 2005 (J-20 is expected in 2017 - 12 years later)
Number build 195 (8 test and 187 operational aircraft) -- (J-20 ???, 8 test and ??? operational)
Program cost $66.7B (J-20 ????)
Unit Cost, flyaway $150M (J-20 ???)
I am expecting
* The number build for J-20 is over 250 units
* Program cost 100B Yuan or roughly $15B
* Unit cost, flyaway $100M