Fighter aircraft have undergone significant evolution over the last few decades, incorporating increasingly advanced technologies to adapt to the challenges of modern aerial combat. Since the arrival of the fourth generation until the development of airplanes sixth generation Currently, each stage has involved the inclusion of new capabilities such as stealththe sensor fusionhe network combat and the advanced autonomy. Knowing the differences between fourth, fourth+ (4th+), fourth++ (4++), fifth and sixth generation aircraft is crucial to understanding how the air forces of the world’s main powers are configured and which aircraft belong to each of these. categories.
Fourth generation aircraft: The leap to maneuverability and digital avionics
The fourth generation aircraft They began to appear in the 1970s and represent a huge technological leap compared to previous generations. The fourth generation is mainly characterized by its high maneuverability, the implementation of advanced digital avionics and the ability to conduct air combat at both short and medium distances. These aircraft were designed to adapt to modern warfare with improved radar and weapons capabilities.
Key features of fourth generation aircraft:
- Advanced maneuverability: Capable of executing tight maneuvers at high speeds thanks to an improved aerodynamic design.
- digital avionics: Integration of radar and digital avionics systems that allow better weapons management and greater situational awareness.
- BVR (Beyond Visual Range) combat capability: Equipped with long-range missiles, allowing them to attack targets beyond visual range.
- Incorporation of fly-by-wire flight controls: Electronic flight control systems that improve the maneuverability and stability of the aircraft.
Examples of fourth generation aircraft:
- F-16 Fighting Falcon (USA)
- F/A-18 Hornet (USA)
- MiG-29 Fulcrum (Russia)
- Mirage 2000 (France)
- Tornado IDS (United Kingdom/Italy/Germany)
Improved fourth generation aircraft (4º+ and 4++): Integration of new technologies
The planes of fourth generation+ (4th+) and 4++ They represent an evolution of the classic fourth generation. They were introduced during the 1990s and early 2000s with improvements in avionics, radar systems and weapons capability. Although they do not have full stealth capabilities, these aircraft integrate some low detectability features and significantly improve their ability to confront fifth generation aircraft.
Key features of 4+ and 4++ aircraft:
- Improvement in avionics and AESA radars: Incorporation of radars with active electronic scanning (AESA) technology that allow greater precision and the ability to track multiple targets.
- Fusion of sensors and networked combat systems: Ability to share data in real time with other aircraft and ground systems.
- Weapon upgrades: Compatibility with advanced missiles and the incorporation of electronic warfare systems to counter threats.
- Improved maneuverability and fuel efficiency: Aerodynamic modifications and more efficient engines that provide greater range and operating time.
Examples of fourth generation+ and 4++ aircraft:
- F-15E Strike Eagle (USA): A modernized version of the F-15 with improved air-to-ground capabilities.
- Su-35S Flanker-E (Russia): Equipped with AESA radar and super-maneuverability capabilities thanks to its thrust vectoring.
- Rafale (France): Integrates AESA radar and an advanced electronic warfare system (SPECTRA).
- Eurofighter Typhoon (Europe): Multinational aircraft with air-to-air and air-to-ground capabilities.
Fifth generation aircraft: Stealth and superiority on the battlefield
The fifth generation aircraft They represent the pinnacle of current aeronautical technology and are the reference in terms of stealth capabilities and air superiority. Fifth-generation developments focus on the ability to operate in highly contested environments, avoid radar detection, and provide long-range combat superiority.
Key features of fifth generation aircraft:
- Stealth: Design with low radar reflectivity surfaces and absorbent materials to avoid detection.
- Supercruise: Ability to fly at supersonic speeds without the need to use afterburning, which saves fuel and reduces the thermal signature.
- Total sensor fusion: Integration of data from multiple sensors in real time to provide the pilot with a complete view of the combat environment.
- Network combat capability: They function as nodes within a battle network, sharing data in real time with other air and ground platforms.
- High maneuverability: Although not all fifth-generation aircraft focus on extreme maneuverability, most have super-maneuverability capabilities.
Examples of fifth generation aircraft:
- F-22 Raptor (USA): The first operational fifth-generation aircraft, designed for air superiority.
- F-35 Lightning II (USA): Multipurpose aircraft with variants for aircraft carrier operations, vertical and conventional takeoff.
- Su-57 Felon (Russia): Multifunctional fighter aircraft with stealth and super-maneuverability capabilities.
- Chengdu J-20 (China): Air superiority aircraft designed to compete with the F-22 and F-35 in stealth capabilities and weaponry.
Sixth generation aircraft: the next revolution in air combat
The sixth generation is the next frontier in fighter aircraft development. Still in the development and conceptualization phases, these aircraft will incorporate new capabilities that go beyond stealth and maneuverability. Major sixth-generation aircraft development programs include the NGAD (Next Generation Air Dominance) of the United States, the FCAS/SCAF of France, Germany and Spain, and the GCAP (Global Combat Air Programme) from the United Kingdom, Italy and Japan.
Expected features of sixth generation aircraft:
- Sensor fusion and network-centric combat: Ability to act as nodes within a global combat network, communicating with multiple platforms in real time.
- Advanced electronic warfare capabilities: Ability to jam, suppress and neutralize enemy radar and communications systems.
- Unmanned support vehicles (Loyal Wingman): Integration of unmanned drones that accompany the combat aircraft and can be used for reconnaissance, attack or decoy missions.
- Adaptive stealth: Aircraft with adjustable signature technology that can modify their stealth characteristics depending on the mission.
- Artificial intelligence and autonomy: Use of AI to improve decision-making and battlefield management, as well as the ability to operate in autonomous or semi-autonomous mode in certain situations.
- Energy efficiency and advanced motors: New propulsion systems that provide greater speed, maneuverability and lower fuel consumption.
Sixth generation aircraft projects:
-
NGAD (Next Generation Air Dominance) – USA
- Developed by the US Air Force, the NGAD seeks to replace the F-22 and act as a force multiplier with advanced stealth and electronic warfare capabilities.
- The NGAD is expected to operate alongside unmanned support drones, known as “Loyal Wingmen”, and act as a node in the air combat network.
-
FCAS/SCAF (Future Combat Air System / Système de Combat Aérien du Futur) – France, Germany and Spain
- European multinational project that seeks to develop a sixth generation aircraft and a combat ecosystem that includes support drones and networked warfare systems.
- The FCAS will replace the Dassault Rafale and Eurofighter Typhoon in the air forces of participating countries.
-
GCAP (Global Combat Air Programme) – United Kingdom, Italy and Japan
- Joint project to develop a sixth generation fighter aircraft that will be the successor to the Eurofighter Typhoon and will complement the F-35.
- The program focuses on the integration of stealth capabilities, electronic warfare and joint operation with autonomous drones.