Friday 16 September 2011

Russia and India's joint 5th generation fighter aircraft


Russia wants a “5th generation” fighter that keeps it competitive with American offerings, and builds on previous aerial and industrial success. India wants to maintain technical superiority over its rivals, and grow its aerospace industry’s capabilities. They hope to work together, and succeed. Will they? And what does “success” mean, exactly?

India’s SU-30 MKIs

Russia’s SU-27/30 Flanker family fighters were invented in the 1980s and 1990s, and attempted to incorporate the lessons from America’s 4th generation “teen series” fighters (F-14, F-15, F-16, F/A-18) into their designs. They were successful, and India’s Air Force may now be flying the world’s second best air superiority fighter in the SU-30MKI. The MKI, and European designs like the Eurofighter, Rafale, and JAS-39 Gripen, are typically referred to as “4+ generation” aircraft.
The term “fifth generation” fighter is part marketing hype, and partly based in reality. There are no objective criteria for this designation, and very few examples, which means it’s mostly applied based on when the development of a front-line, advanced fighter begins. There are a few general constants on the American side: some level of stealth, and internal weapon carriage to maintain it; arrays of embedded sensors within the airframe’s structure, rather than as bolt-ons; and sensor fusion into single displays. On the other hand, level of application varies for each category, and capabilities like super-maneuverability and super cruise (Mach 1+ without using fuel-guzzling afterburners) have not been constants.


he USA’s “5th generation” F-22A Raptor offers full stealth, supermaneuverability, an advanced AESA radar, huge computing power that creates a single “sensor fusion” picture from the plane’s array of embedded sensors and datalinks, and the ability to “supercruise” above Mach 1 instead of just making short supersonic dashes. It is operated by the USAF, and just over 190 aircraft will constitute America’s entire fleet. America has refused to export it, despite interest from very close allies.

To a lesser extent, there’s also the cheaper F-35 Lightning II, with some stealth, a smaller AESA radar, sensor fusion, and even more computing power and sensors embedded around the aircraft. It lacks supercruise or super-maneuverability, and will be produced for domestic use and export in Air Force, Marines/STOVL, and Navy variants.
Until similar aspects of the Russian design became clear, it was impossible know exactly what Russia and India mean by “5th generation.” Some of those ambiguities were resolved, however, when Russia unveiled its T50 demonstrators.