It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
One of the reasons the Russians are less than enthused at buying the initial version of the Su-57 is because the stealth fighter is currently powered by interim Saturn AL-41F1 afterburning turbofans producing 32,500lbs thrust each. That is the same engine as the existing Su-35S Flanker-E, which uses many of the same systems that the Su-57 will.