VK (service) friends, as well as a real-time news search. VK updated its features and design on April 2016. As of May 2017, according to Alexa Internet ranking, VK is one of the most visited websites in some Eurasian countries. It is: It was the fourth most viewed site in Ukraine until, in May 2017, the Ukrainian government banned the use of VK in Ukraine. According to a study for May 2018 conducted by Factum Group Ukraine VK remained the fourth most viewed site in Ukraine, but Facebook was twice as much visited. As of May 2018 the site is available in
Klimov VK-3 superseded by the Lyulka AL-7F, a less modern but more efficient engine. The VK-3 is a single-shaft turbofan engine with a 10-stage axial compressor, an annular combustion chamber, a three-stage turbine, an afterburner and a variable supersonic nozzle. Bypass air is drawn from the second stage of the compressor to 12 external pipes and is directed into the turbine through an adjustable mixing valve, bypassing the combustion chamber. The 8th stage compressor has two position adjustable guide vanes. Klimov VK-3 The Klimov VK-3 was the first Soviet afterburning bypass turbojet engine. Designed by S V Lyunevich at Klimov, at OKB-117