Flat Nozzle and New Engine: Foreign Experts Explain Why the Su-57 Will Become Even More Dangerous
Defence Security Asia: The AL-51F-1 Powerplant Will Eliminate the Main Drawback and Determine Competitiveness in the Global Market
AL-51F-1
India does not need baseline Su-57s, but ones with the new AL-51F-1 engine
MWM: The republic will expand orders after receiving the first 40 Su-57M1 fighters