Common Design Elements
Giovanni de Briganti has defined the defining elements of a fifth generation fighter to be:
- Stealth
- High maneuverability - Which tends to include short-field capabilities.
- Advanced avionics
- Networked data fusion from sensors and avionics
- Multirole capabilities
In order to minimize their radar cross-section (RCS), all fifth-generation fighters use chines instead of standard leading edge extensions and lack canards, though the Sukhoi PAK FA T-50 has engine intake extensions that seem to function somewhat like canards and the Chengdu J-20 designers have chosen the agility enhancements of canards in spite of their poor stealth characteristics. They all have twin canted vertical tails also to minimize side RCS. Most fifth-generation fighters with supermaneuverability achieve it through thrust vectoring.
They all have internal weapon bays in order to avoid high RCS weapon pylons, but they all have external hardpoints on their wings for use on non-stealthy missions, such as the external fuel tanks the F-22 carries when deploying to a new theater.
All fifth-generation fighters have a high percentage of composite materials, in order to reduce RCS and weight.
Read more about this topic: Fifth-generation Jet Fighter
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