Before you post any question regarding the Su-27 Flanker or its derivatives, please check out my pages first. I have put in a lot of effort and time into these sections and keep them as up-to-date as possible. Each one features a description of the variant(s), specifications, photos, videos and links.
Su-27 (Su-27S/P, Su-27SK, Su-27SM/SMK, Su-27UB/UBK/UBM, etc.):
http://www.milavia.net/aircraft/su-27/su-27.htmSu-30 (Su-27PU, Su-30K, Su-30M, Su-30MK, Su-30MKI/MKM/MKA, Su-30MKK/MKV/MK2, etc.):
http://www.milavia.net/aircraft/su-30/su-30.htmSu-33 (Su-27K, Su-27KUB/Su-33UB, etc.):
http://www.milavia.net/aircraft/su-33/su-33.htmSu-34 (Su-27IB, Su-32FN/Su-32MF, etc.):
http://www.milavia.net/aircraft/su-34/su-34.htmSu-35 (Su-27M, Su-35UB):
http://www.milavia.net/aircraft/su-35_su-27m/su-35_su-27m.htmSu-35 (Su-27BM):
http://www.milavia.net/aircraft/su-35/su-35.htmSu-37 (Su-27M TVC, Su-37MR):
http://www.milavia.net/aircraft/su-37/su-37.htmFlanker History/Timeline:http://www.milavia.net/aircraft/su-27/su-27_his.htmFlanker Armament/Weapons:http://www.milavia.net/aircraft/su-27/su-27_arms.htmFlanker Variant List:http://www.milavia.net/aircraft/su-27/su-27_var.htmFlanker Operator List:http://www.milavia.net/aircraft/su-27/su-27_ops.htm