BrahMos is a short-range supersonic missile, which has been used by the Indian Navy since 2005. The missile has a range of 180 miles and can carry a conventional warhead of up to 660 pounds.
The jet would use its stealth and speed to get into launch position and launch the BrahMos from standoff ranges.
With its Mach 3.0 speed and 180-mile range, the BrahMos missile used in combination with the PAK-FA would enable India to hit Chinese and Pakistani targets with relative impunity. A Mach 3.0-capable cruise missile is difficult to counter. According to U.S. Navy sources, the BrahMos has a particular terminal phase that makes it particularly difficult to intercept.
The completed FGFA will include a total of 43 improvements over the T-50, including stealth, supercruise, advanced sensors, networking and combat avionics. Two separate prototypes will be developed, one by Russia and a separate one by India. The Indian version will be a two-seater for pilot and co-pilot/Weapon Systems Operator (WSO).
India wants the stealth fighter jet to be inducted into the Indian Air Force much before 2024-25 - the date that was fixed for delivery. India plans to build as many as 127 fighters at the Hindustan Aeronautics Limited facility in Nashik. The Fifth Generation Fighter Aircraft (FGFA) project is estimated to cost $25 billion.