franco wrote:d_taddei2 wrote:Berkut wrote:d_taddei2 wrote:does anyone know if all Russian Su-27 have now been upgraded to SM level as the upgrade program started back in 2010 and apart from Wiki havent found any real numbers. Or have they halted it in favour of Su-30 and Su-35.
45-48 under the original Su-27SM contract. 12 more ordered under 2009 contract, Su-27SM3 standard, new frames. 2 more SM3's in 2014, these were standard operational frames upgraded. 36 more SM3's ordered this year, these are also upgrades of existing vanilla S/P frames.
thanks and thanks to George1 as well, so it looks like they continue to upgrade, despite Su-30 and Su-35 coming into service, i suppose its cheaper to upgrade Su-27 to Sm level than it is to buy new Su-30 as their isnt much in it in differences to either aircraft, and it also makes sense to continue to sell Su-30 to other countries than sell Su-27Sm, i am surprised the Su-34 hasn't had any orders from outside of Russia yet.
The original order was for 26 Su-27SM which appear to be retiring and replaced by the Su-35S.
There are today 50 Su-27SM2 upgrades, 12 new built Su-27SM3 plus a few Su-27UB upgraded to Su-27UBM.
There are plans to upgrade another 36 Su-27P's to Su-27SM2 standard.
I think Russia made only one Su-27UBM prototype, but not modernize any as UBs have too much flying hours and are worn out. It have not to be mixed with Belarus Su-27UBM and Kazakhstan's Su-27UBM1 modernized in Belarus.