unveiled the RVV-SD and RVV-MD missiles for the first time at the Moscow Air Show (MAKS) in August 2009. The RVV-SD is an improved version of the R-77, while the RVV-MD is a variant of the R-73. The RVV-SD includes the upgrades associated with the izdeliye 170-1, or R-77-1. The RVV-SD, along with the RVV-MD, seem to be part of Russia's bid for India's medium multirole combat aircraft competition. Both designations were included by MiG on a presentation covering MiG-35 Fulcrum armament during Aero India Air Show in February. The initial RVV-SD offering is likely no more than a stopgap to try to maintain its position, and to provide a credible radar-guided weapon to offer as part of fighter export packages and upgrade programs. According to specifications, the R-77-1 and its export variant RVV-SD is heavier than the basic R-77 / RVV-AE, weighing rather than . Maximum range is increased to from . The missile is also slightly longer at , rather than the of the basic variant. Additional improvements include upgrades to the missile's radar seeker and boat tail rear section to reduce drag. Russian missile manufacturer Agat previously confirmed it was working on seeker upgrades for the R-77, implying that at least two projects were underway, one for export and one for the Russian air force. Vympel, a which had merged to be part of TRV, has been developing a more extensive upgrade of the missile than the R-77-1. Designated the izdeliye 180, or K-77M, this missile is a mid-life upgrade for the missile and is intended to be the main medium-range missile for the Sukhoi Su-57. This upgrade aims to provide a further improvement in range, with the design including a dual-pulse motor configuration. The izdeliye 180 will use an Active electronically scanned array seeker and conventional rear fins instead of the R-77's lattice fins. This missile is intended to match the performance of the latest AIM-120 variants. Though it uses a similar designation as the earlier R-77M improvement program, it is not known if these two missiles are the same or are related. On October 4, 2020 footage of Su-57 fighter flying with R-77M missile was revealed in a video released by the Russian Defense Ministry commemorating the 100th anniversary of the 929th Chkalov State Flight-Test Center Design description For the first forty years, the aerodynamics combined vestigial cruciform wings with grid fins used as tail