Are these for the migs? Can the Yaks also use them?
Also what is the point of these tenders... there is only one supplier... just go directly to them.
My understanding only for the MiGs (
@Destranator bhai is correct). Yak-130 (or Yak-131 Attack variant, which was supposed to replace the Su-25 ground attack variant) is a much smaller platform which can only carry Sidewinder level missiles, rocket pods and of course some lightweight GsH cannons. Yak-131 single-seater attack variant will supposedly have a BVR or even AESA radar and have a strengthened inner hardpoint maybe for R-77 or even heavier missiles. But this is akin to carrying a large king-size bed using a tuk-tuk.
Indians use the R-77 extensively. Americans call the R-77 AMRAAM-ski, which to them is the Russian version of the AIM-120, which itself is significantly larger than the sidewinder. More info below (new version of R-77 will be the main missile for Su-57):
Technologically, the R-77 is an active-radar homing missile, meaning that the seeker itself has a small radar that sends out radar pulses to detect the target and then uses that information to home in on the target. The current R-77 and R-77-1 use
mechanically directed doppler radar without AESA, while rumored future variants will use AESA, in which the radar beam can be electronically directed with greater precision and speed (the use of AESA does not preclude the use of mechanical direction; modern Russian radars
have been seen with both). The missiles also possess inertial guidance. Aerodynamically, the R-77 is distinctive among air-to-air missiles in that it uses
grid (lattice) fins, an innovation that greatly increases the surface area versus traditional fins. This allows the R-77 to maneuver at higher angles of attack. These fins are
also foldable allowing the R-77 to be placed on internal missile bays of some aircraft. The R-77 also uses a laser proximity fuze, in contrast to the AIM-120, which uses a radar proximity fuze. The laser fuze is immune to ECM by design principle; however, the AIM-120’s fuze is said to be designed to be resistant to ECM as well.