K-162 was renamed K-222 in 1978. It was armed with 10 cruise missiles and 12 torpedoes.
The world’s fastest speed allows the K-162 submarine to quickly approach its target, launch missiles and disappear instantly. However, the cost of building the ship was very expensive, because the K-162 submarine’s hull was built entirely of titanium. Its engines also made a loud noise, making the K-162 vulnerable to exposure. The K-162 produced only a single in 1969 and was decommissioned in 1989.
This was followed by the “Caspian Sea Monster”, the nickname given by NATO for the Soviet Lun-class ekranoplan. This vehicle used 10 turbojet engines, making it capable of sliding across water. Ekranoplan had a length of 74 meters, a width of 44 meters, carrying 6 P-270 Moskit anti-ship missiles, with a warhead weighing 300 kg.
The first Ekranoplan was produced in 1987, but due to the high budget, the Soviet Union could not produce any more Ekranoplan and the project was canceled. Recently, the Russian designers announced that they are planning to restore the project with a modern version of the Ekranoplan.
The third is the Sukhoi Su-47 Berkut fighter (Golden Eagle). What makes it so special was its forward-swept wings, which gave this fighter a good maneuverability at high speeds. It could take off and land on short and field runways, as well as improve stability in high-angle aerial fights and reduce radar signature.
However, this design put the wings of the Su-47 under great pressure when flying at high speeds and using expensive materials. Mass production was a difficult issue, as the cost of manufacturing, repairing and maintaining the Su-47 was a real burden.
The project “Black Eagle” Obyekt 640, was a tank developed on the basis of the T-80U main battle tank. The tank was equipped with a 1,500-horsepower gas turbine engine, helping it to reach road speeds of up to 80 km/h.
Obyekt 640 tank equipped with main firepower was a 125 mm smoothbore gun, with an automatic reload system. It was armed with Kontakt-5 or Kaktus explosive reactive armor and the Drozd-2 active defense complex.