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Sixth-generation fighter

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Sixth-generation jet fighter
Role Fighter aircraft
Status In development
Developed from Fifth-generation fighter

A sixth-generation fighter is a conceptualized class of jet fighter aircraft design more advanced than the fifth-generation jet fighters that are currently in service and development. Several countries have announced the development of a national sixth-generation aircraft program, including the United States, Russia and China. Whilst other countries have joined collaborative multinational projects such as Japan, Italy and the United Kingdom with Global Combat Air Programme, and France, Germany and Spain with FCAS; in order to spread development and procurement costs.[1] The first sixth-generation fighters are expected to enter service in the 2030s.

Characteristics

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While still at an early stage of development, several distinct characteristics common to many sixth-generation fighter concepts have evolved.

The fifth-generation abilities for air-to-air capability, battlefield survivability in the anticipated anti-access/area denial environment and ground support/attack will need to be enhanced and adapted to the future threat environment. An initial focus on air superiority roles has moved away from close-in dogfighting, which is becoming less common, and instead broadened to embrace ground support, cyber warfare and even space warfare capabilities, with beyond-visual-range (BVR) air-to-air missile capability remaining important. The flexibility to undertake manned and unmanned missions is also sought, along with the ability to integrate with more numerous fleets of satellite drones and ground sensors in a high-traffic networked environment to deliver full "data-to-decision" (D2D) capability.[2]

Typical design characteristics anticipated to deliver these roles include:[3]

  • Designed using Digital Engineering (aka Model based Design) [4]
  • Advanced digital capabilities including high-capacity networking, AI, data fusion, cyber warfare, D2D and battlefield command, control and communications (C3) capabilities.
  • Optionally manned, with the same airframe capable of conducting piloted, remote controlled or onboard-AI controlled missions.
  • Enhanced human-systems integration, with virtual cockpits presented via helmet-mounted displays which allow the pilot 360-degree vision with AI-enhanced battlefield awareness, and replacing conventional instrument panels.
  • Advanced stealth airframes and avionics.
  • Advanced variable-cycle engines able to cruise economically but still deliver high thrust when required.
  • Increased-range stand-off and BVR weapons.
  • Potential use of directed-energy weapons such as a laser CIWS.
  • Software Architecture with separation of flight critical operations from other functionality [5]
  • Use of GaN transistors [6]

The feasibility of some of these characteristics remains uncertain. Development time and cost are likely to prove major factors in laying out practical roadmaps. Specific requirements are anticipated by some observers to crystallize around 2025.[2]

History

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Introduction timeline
TBAItaly Japan United Kingdom Global Combat Air Programme
France Germany Spain Future Combat Air System
Russia Mikoyan PAK DP
United States F/A-XX program
United States Next Generation Air Dominance

Italy, Japan and the United Kingdom

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Main article: Global Combat Air Programme
Further information: BAE Systems Tempest and Mitsubishi F-X

In 2010, the Japanese government revealed a concept sixth-generation jet fighter, the i3 FIGHTER.[7] i3 is short for informed, intelligent and instantaneous.[8]

In July 2014, Jane's Information Group reported that a House of Commons Defence Select Committee had published a report about the UK's "post-2030 combat aviation force structure". The report highlighted a possibility of the UK committing to a next generation fighter program to potentially replace the Eurofighter Typhoon post-2030; the Eurofighter Typhoon has since had its intended service life extended to around 2040.[9] On 22 March 2016, Japan conducted the first flight of the Mitsubishi X-2 Shinshin testbed aircraft for this project.

In July 2018, then British Secretary of State for Defense Gavin Williamson unveiled the UK's Combat Air Strategy and announced the development of a sixth-generation fighter concept named the Tempest for the Royal Air Force at Farnborough Airshow 2018.[10][11]

In 2019, Sweden and Italy joined the Tempest project.[12][13] During the same year, India and Japan were also invited to join the project.[14][15] On 1 April 2020, the Japanese F-X program was announced. In 2022, after a year of ever closer collaboration with the Tempest project and a retreat from an industrial partnership with Lockheed Martin, Japan merged its F-X project with the BAE Tempest fighter development to form the three nation Global Combat Air Programme while opting to pursue separate drone development. Two weeks after the agreement was signed between the UK, Italy & Japan; Sweden signed a bi-lateral defence trade agreement with Japan allowing them to continue on as an observer in the programme and the option to participate as a development partner in the future if desired.

France, Germany, Spain

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Main article: Future Combat Air System

Within the Future Combat Air System (FCAS) programme, France, Germany and Spain are jointly working on a sixth-generation fighter known as the Next-Generation Fighter (NGF).[16]

Russia

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Main article: Mikoyan PAK DP

On 26 August 2013, Russia revealed it would proceed with development of a sixth-generation jet fighter. They say the aircraft will most likely be pilotless. However, they would not skip completing development of fifth-generation fighter projects, like the Sukhoi Su-57.[17]

Mikoyan PAK DP is a Russian program to develop a next generation interceptor aircraft to replace the Mikoyan MiG-31. According to the Russian defense analyst Vasily Kashin, the aircraft would be considered as a 5++ or 6th generation fighter project.[18] In January 2021, Rostec Corporation, the owner of Mikoyan, announced that the PAK DP had now entered the development phase, saying "Development of the next generation of interceptor fighters has already begun."[19][20]

United States

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Main articles: F/A-XX program and Next Generation Air Dominance

The United States Air Force (USAF) and United States Navy (USN) are anticipated to field their first sixth-generation fighters in the 2030 timeframe.[21][22] The USAF is pursuing development and acquisition of a sixth-generation air superiority fighter through the Next Generation Air Dominance (NGAD) program that succeeds the Lockheed Martin F-22 Raptor.[23][24] The USN is pursuing a similar program using the same name with the fighter component called the F/A-XX, likewise intended to complement the smaller Lockheed Martin F-35C Lightning II and replace its existing aircraft such as the Boeing F/A-18E/F Super Hornet.[25][26]

The U.S. Navy launched its sixth-generation F/A-XX program in 2008 and the USAF sought initial responses for a Next Generation Tactical Aircraft (Next Gen TACAIR), which would become the F-X program, in 2010.[27][28][29]

In April 2013, DARPA initiated a study to try to bring together existing USAF and USN concepts.[30] Next-generation fighter efforts would initially be led by DARPA under the "Air Dominance Initiative" to develop prototype X-planes. The U.S. Navy and Air Force would each have variants focused on their mission requirements.[31] However, also in 2013, the RAND Corporation recommended that the U.S. military services avoid joint programs for the development of the design of a sixth-generation fighter. They found that in previous joint programs, different service-specific requirements for complex programs had led to design compromises which raised costs far more than normal single-service programs.[32]

In 2014, a broader approach to offensive technologies was proposed, with USAF aircraft anticipated to operate alongside ground-based and non-kinetic anti-aircraft solutions, and with a greater weapon load than current fighters.[33] In 2016, the USAF consolidated this change of course for its Air Superiority 2030 plan, to pursue "a network of integrated systems disaggregated across multiple platforms" rather than focusing on the sixth-generation fighter.[34] The Air Force and Navy requirements had already been merged the year before and were now formally integrated, with the joint focus to be on AI systems and a common airframe.[35]

Boeing, Lockheed Martin and Northrop Grumman have all announced sixth-generation aircraft development projects.[36][37][38] On September 14, 2020, the USAF announced that a prototype aircraft component of the Next-Generation Air Dominance (NGAD) program had flown for the first time. The details remained classified.[39]

Concepts and technologies

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There are significant differences between Navy and Air Force visions for their respective next-generation jet concepts, but both agree on some fundamental characteristics. These include artificial intelligence as a decision aid to the pilot, similar in concept to current sensor fusion. They will also have Positioning, Navigation, and Timing (PNT), and communications that allow big data movement between both services' aircraft.[40]

The USAF regard stealth technology as extremely important for the F-X, while the US Navy emphasize the F/A-XX should not be so focused on survivability as to sacrifice speed and payload. Unlike the previous F-22 and F-35 development programs that depended on new technologies that drove up cost and delayed introduction, the Air Force is intending to follow a methodical path of risk reduction to include as much prototyping, technology demonstration, and systems engineering work as possible before creation of an aircraft actually starts. Sixth-generation strike capability is envisioned as a move beyond the limitations inherent to the potential abilities of a single strike aircraft. 6-Gen combat awareness will require a theater-wide integration of diverse systems beginning with the primary airborne sensory suite and further including real-time data linking of ground-based detection and ranging technology with sensors aboard primary and support aircraft, advanced communication capabilities, unparalleled capacity for continuous onboard info-stream processing utilizing AI for real-time data translation and rendering geared toward optimizing pilot situational awareness while reducing workload, potential near-space capabilities, extension of existing strike/standoff ranges, seamless co-operation with ground-to air defense assets and the ability to deploy aircraft in manned, optionally manned, unmanned and stand-in options.[41]

In March 2015, the Navy revealed they were working with the Air Force to potentially release joint analysis of alternatives (AoA) in 2016 for their next-generation fighters; they are allowed to take a joint AoA, then define a service solution that would be good for each service. The Navy is focusing on replacing the capabilities of the fighter with a wide range of options for the Super Hornet, as well as the EA-18G Growler. The AoA will run parallel to several other design and technology efforts including engine technology, airframe molds, broadband and IR stealth, and new ways to dominate the electromagnetic spectrum. Part of the Navy's calculus will be based on how the F-35C performs as a critical forward sensor node for the carrier air wing. How the fifth-generation F-35C integrates with the rest of the air wing to give greater capabilities than what the platform itself can do may lend itself to the sixth-generation F/A-XX.[42] The Navy aircraft is to have greatly increased speed and range compared to the Super Hornet.[43]

In April 2015, the Center for Strategic and Budgetary Assessments (CSBA) released a report concluding that the next-generation U.S. Air Force fighter should be larger and more resembling a bomber than a small, maneuverable traditional fighter. It analyzed over 1,450 air-to-air engagements since 1965 and found that long-range weapons and sensors have dramatically decreased instances of dogfighting. With the increase of air defense systems using electronic and infrared sensors and high-speed weapons, traditional designs relying on small size, high speed, and maneuverability may be less relevant and easier to intercept. As a result, the CSBA suggests building a fighter significantly larger relying on enhanced sensors, signature control, networked situational awareness, and very-long-range weapons to complete engagements before being detected or tracked. Larger planes would have greater range that would enable them to be stationed further from a combat zone, have greater radar and IR detection capabilities, and carry bigger and longer-range missiles (Long-Range Engagement Weapon). One airframe could be fitted with various attachments to fill several roles. The concept of a small number of large, intercontinental and heavily armed combat aircraft could link itself to the development of the Long Range Strike Bomber.[44]

In November 2016, the USAF Scientific Advisory Board announced studies for a Penetrating Counter Air (PCA) platform that would combine long range, supersonic speed, stealth and maneuverability and be fielded by 2030.[45] PCA would have substantially longer range to fly long distances over the Pacific, especially in a situation where airbases in the vicinity of China are not available[46] or if aerial tankers are destroyed.[47] It would also escort bombers deep into Russia or China, where the anticipated threat includes advanced networked air defense radars. It would include stealth against low or very high frequency radars (like those of the S-400 missile system),[48] which requires an airframe with no vertical stabilizers. Another requirement is significantly larger payload than current air superiority aircraft like the F-22. Adaptive cycle engine technology is an option under consideration for the PCA,[49] given the fact that the alternative would be a very large aircraft.[47]

While current engines operate best at a single point in the flight envelope, sixth-generation engines are expected to have a variable cycle to give optimum efficiency at any speed or altitude, giving greater range, faster acceleration, and greater subsonic cruise efficiency. The engine would configure itself to act like a turbojet at supersonic speeds, while performing like a high-bypass turbofan for efficient cruising at slower speeds; the ability to supercruise will likely be available to aircraft with this engine type. The technology is being developed by the Air Force under the Adaptive Engine Transition Program (AETP) and by the Navy under its Variable Cycle Advanced Technology (VCAT) program. The Air Force is aiming for a Milestone A decision by 2018, with a production version to be ready possibly by 2021. Companies involved with next-generation engine development include General Electric and Pratt & Whitney.[50] Risk reduction began in 2012 so that engine development can start around 2020. An engine is to be ready when fighters are introduced by the Navy in 2028 and the Air Force in 2032.[51]

The Air Force is interested in lasers both for low-power illumination and as higher-powered weapons. In November 2013, the Air Force Research Laboratory released a request for information (RFI) for submissions with detailed descriptions in a militarily useful configuration, potential problems and solutions, and cost estimates.[52]

China

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After successfully developing its 5th generation fighter J-20, China is now working on the development of a next generation aircraft. Dr. Wang Haifeng, chief designer of the Chengdu Aerospace Corporation announced that China had begun pre-research on sixth-generation aircraft in January 2019, predicting that the program would come to fruition by 2035.[53][54]

In February 2023, Aviation Industry Corporation of China (AVIC) shared its six-generation fighter aircraft concept on social media. The featured concept included diamond-shaped wings and tailless design,[55] which correlated to earlier image released by various AVIC presentation. In 2018, Chengdu Aerospace Corp reportedly submitted eight proposals for the sixth-generation fighter design, and four designs were tested in low altitude wind tunnels.[56]

India

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In an interview on 8 October 2020 to celebrate the 88th anniversary of the Indian Air Force (IAF), Air Chief Marshal Rakesh Bhadauria was asked about plans for sixth-generation technologies and he responded that they have a clear roadmap for sixth-generation combat systems like directed energy weapons, smart wingman concept, optionally manned combat platforms, swarm drones, hypersonic weapons, and other equipment.[57][58]

India is currently working on its fifth-generation AMCA which will have some sixth-generation technologies.[59][60] IAF's new chief, Air Chief Marshal Vivek Ram Chaudhari reaffirms this in an interview given on 22 October 2021.[61]

Brazil

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On 6 May 2024, during a press trip at the Embraer factory in the city of São José dos Campos, São Paulo, the Director of Industrial Cooperation of Saab in Brazil, Luiz Hernandez, stated that Brazil will develop a sixth-generation fighter based on technologies from the Saab JAS 39 Gripen, already in production in the country. The project would be a cooperation between Embraer and the Department of Aerospace Science and Technology. The Vice President of Embraer's defence division, Walter Pinto Junior, confirmed the idealization of the project, and commented that "for Embraer, fighter aviation is a possibility of taking higher flights", but highlighted that the company still needs a "business plan, to make a viable long-term project".[62][63]

See also

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References

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Notes

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  1. ^ "Japan, U.K. to Work Together on Sixth Generation Fighter Development". Popular Mechanics. 22 July 2022.
  2. ^ a b Baker 2018.
  3. ^ "What to Expect from Sixth-Gen Aircraft". www.nationaldefensemagazine.org.
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  5. ^ "UK Employs Artificial Intelligence To Support Development Of Its 6th-Gen Fighter Program, Tempest". www.eurasiantimes.com.
  6. ^ "The Mighty 6th Generation Fighter Jets". interestingengineering.com.
  7. ^ The research and development vision of a future fighter (Japanese) (PDF), JP: MoD, 25 August 2010, archived (PDF) from the original on 18 April 2013, retrieved 5 December 2013
  8. ^ Simpson, James (2 February 2016). "Japan's new stealth fighter is a futuristic marvel". The week. War Is Boring. Archived from the original on 8 February 2016. Retrieved 8 February 2016.
  9. ^ "UK sets out post 2030 combat aviation force structure", Jane’s, IHS, archived from the original on 20 August 2014, retrieved 19 August 2014
  10. ^ "Let's Have a Look at the "Tempest", UK's 6th Generation Combat Aircraft Mock-Up Unveiled at the Farnborough Air Show". The avionist. 16 July 2018. Archived from the original on 17 July 2018. Retrieved 17 July 2018.
  11. ^ Trevithick, Trevor (16 July 2018). "Let's Have a Look at the "Tempest", UK's 6th Generation Combat Aircraft Mock-Up Unveiled at the Farnborough Air Show". The drive. Archived from the original on 16 July 2018. Retrieved 17 July 2018.
  12. ^ Chuter, Andrew (7 July 2019). "Sweden to join British 'Tempest' next-gen fighter push". Defense News. Retrieved 16 June 2020.
  13. ^ Chuter, Andrew; Sprenger, Sebastian (11 September 2019). "British, Italian defense companies jump on Tempest". Defense News. Retrieved 16 June 2020.
  14. ^ Shukla, Ajai (8 February 2019). "UK to invite India to co-develop sixth-generation fighter aircraft Tempest". Business Standard India. Retrieved 3 August 2020.
  15. ^ Chuter, Andrew (20 July 2020). "British next-generation fighter program taps new suppliers". Defense News. Retrieved 3 August 2020.
  16. ^ Machi, Vivienne (17 May 2021). "New trinational deal paves way for FCAS demonstrator program". Defense News. Retrieved 3 September 2021.
  17. ^ "Russia Developing Unmanned Next-Generation Fighter", Ria, RU, 26 August 2013, archived from the original on 28 December 2013, retrieved 27 August 2013
  18. ^ "MiG-41: Russia Wants to Build a Super 6th Generation Fighter". Global national interest. 6 April 2017. Archived from the original on 14 April 2017. Retrieved 13 July 2021.
  19. ^ "Russia launches PAK DP development to replace MiG-31". Janes.com.
  20. ^ "Истребитель МиГ-41 вышел на стадию опытно-конструкторских работ". Российская газета. 24 January 2021.
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  23. ^ Roblin, Sebastien (21 July 2018). "Beyond the F-22 or F-35: What Will the Sixth-Generation Jet Fighter Look Like?". The National Interest. Archived from the original on 26 December 2018. Retrieved 29 December 2018.
  24. ^ "The Air Force Is Planning For a Future Without the F-22". Defense One. Retrieved 26 May 2021.
  25. ^ "Boeing's fighting comeback", Flightglobal, 12 July 2011, archived from the original on 14 January 2015, retrieved 22 January 2014
  26. ^ Navy Aviation Vision 2030-2035. NAVAIR Public Release 2021-478. U.S. Navy (Report). October 2021.
  27. ^ Baker 2018, pp.127-8.
  28. ^ USAF: Next Generation Tactical Aircraft (Next Gen TACAIR) Materiel and Technology Concepts Search, US: FBO, archived from the original on 28 September 2011, retrieved 5 November 2010
  29. ^ Air Force Kicks Off Search for 6th-Gen Fighter, Defense Tech, 5 November 2010, archived from the original on 27 July 2011, retrieved 27 December 2010
  30. ^ Majumdar, Dave (24 April 2013). "DARPA working on sixth-generation fighter study". Flight International. Reed Business Information. Archived from the original on 27 April 2013. Retrieved 25 April 2013.
  31. ^ New Budget Will Feature 6th Gen Fighter – Defensenews.com, 28 January 2015
  32. ^ The Department of Defense Should Avoid a Joint Acquisition Approach to the Sixth-Generation Fighter (PDF), Rand, archived (PDF) from the original on 19 February 2014, retrieved 22 January 2014
  33. ^ USAF debates future fighter requirement, Flight global, 31 July 2014, archived from the original on 8 August 2014, retrieved 31 July 2014
  34. ^ Seligman, Lara (18 April 2016). "Beyond the Fighter Jet: The Air Force of 2030". www.defensenews.com. Defense News. Retrieved 24 April 2016.
  35. ^ Baker 2018, p.128.
  36. ^ "Boeing's Sixth-Gen Fighter", Defense tech, 20 September 2011, archived from the original on 3 February 2014, retrieved 21 January 2014
  37. ^ Trimble, Stephen (4 January 2012), "Lockheed reveals bold technology plans with 6th-gen fighter concept", Flight International, Flight global, archived from the original on 9 January 2012, retrieved 5 January 2012, Russian, Chinese and Indian designs are predicted to follow on from their fifth generation fighters to provide competition to American jets. These are expected to enter service between the 2030–2050 timeframe as well.
  38. ^ Northrop Developing 6th Gen Fighter Plans, Defense news, 22 January 2015
  39. ^ Insinna, Valerie (15 September 2020). "The US Air Force has built and flown a mysterious full-scale prototype of its future fighter jet". Defense News. Retrieved 15 September 2020.
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  41. ^ ACC Chief: Stealth ‘Incredibly Important’ For Next USAF Fighter Archived 2015-02-13 at the Wayback Machine – Aviationweek.com, 12 February 2015
  42. ^ Navy and Air Force Planning Joint Exploration of Next Generation Fighter Follow Ons to F-22 and F/A-18E/F Archived 2015-03-31 at the Wayback Machine, USNI, 27 March 2015
  43. ^ "Does the Navy Secretly Want the F-14 Tomcat Back?". The National Interest. 7 November 2018. Archived from the original on 21 November 2018. Retrieved 29 December 2018.
  44. ^ Should Future Fighter Be Like A Bomber? Groundbreaking CSBA Study Archived 2015-04-14 at the Wayback Machine – Breakingdefense.com, 8 April 2015
  45. ^ Giangreco, Leigh (1 November 2016). "Air Force Scientific Advisory Board takes second look at Penetrating Counterair". www.flightglobal.com. Flightglobal.com. Archived from the original on 4 November 2016. Retrieved 17 May 2017.
  46. ^ Robert Farley. "Securing US Bases in the Pacific: A New Era of Instability?". The Diplomat. Archived from the original on 20 June 2018. Retrieved 29 December 2018.
  47. ^ a b Majumdar, Dave (18 October 2016). "Penetrating Counter-Air: What Comes After the F-22 Raptor and F-15C Eagle". The National Interest. Archived from the original on 29 December 2018. Retrieved 29 December 2018.
  48. ^ Bryen, Stephen (18 January 2018). "Russia's S-400 Is Way More Dangerous Than You Think". The National Interest. Archived from the original on 29 December 2018. Retrieved 29 December 2018.
  49. ^ Majumdar, Dave (20 April 2018). "Lockheed Martin Wants to Merge an F-22 and F-35 Into 1 Fighter for Japan. It Won't Happen". The National Interest. Archived from the original on 29 December 2018. Retrieved 29 December 2018.
  50. ^ Next Generation Engine Work Points to Future U.S. Fighter Designs, USNI, 23 June 2014, archived from the original on 25 June 2014, retrieved 23 June 2014
  51. ^ "6th Gen Engines – Pratt In, Rolls Out, GE Stays On", Aviation week, 17 September 2012, archived from the original on 23 May 2014, retrieved 23 May 2014
  52. ^ Air Force Seeks Laser Weapons for Next Generation Fighters, USNI, 20 November 2013, archived from the original on 16 January 2014, retrieved 13 January 2014
  53. ^ Joe, Rick (20 September 2019). "Beyond China's J-20 Stealth Fighter". thediplomat. Trans-Asia Inc. Retrieved 3 September 2021.
  54. ^ Osborn, Kris (8 April 2021). "China Claims It Will Win the Race to a New Stealth Fighter". nationalinterest.org. Center for the National Interest. Retrieved 3 September 2021.
  55. ^ Roblin, Sébastien (16 February 2023). "China's Sixth-Gen Fighter Jet Sure Looks Like the Air Force's Sixth-Gen Fighter Jet". Popular Mechanics.
  56. ^ Trimble, Steve (6 February 2023). "Weekly Debrief: What Does A Concept Design Reveal About China's Next Fighter?". Aviation Week.
  57. ^ Anantha Krishnan. "Air Chief Marshal R K S Bhadauria interview: 'Indigenisation essential for strategic development'". Onmanorama. Retrieved 8 October 2020.
  58. ^ "IAF demonstrated its operational capability along northern border: Chief of Air Staff". The Economic Times. Retrieved 8 October 2020.
  59. ^ "India's 5th-Gen Fighter Jet 'AMCA' Will Have 6th-Gen Technology – Indian Air Force". Eurasian Times. 6 October 2020. Retrieved 19 June 2021.
  60. ^ Anantha Krishnan M (5 February 2020). "AMCA could fly undetected during dangerous missions". Onmanorama. Retrieved 6 February 2020.
  61. ^ Siddiqui, Huma (22 October 2021). "Exclusive- Air Chief Marshal VR Chaudhari to FE Online: Ready for two-front war; IAF is aiming for self reliance in all spheres". The Financial Express. Retrieved 22 October 2021.
  62. ^ Alvez, Xandu (7 June 2024). "Com tecnologia do Gripen, FAB quer criar caça do futuro no Brasil" [With Gripen's technology, FAB wants to create the fighter of the future in Brazil]. O VALE (in Portuguese). Archived from the original on 8 June 2024. Retrieved 8 June 2024.
  63. ^ Igor, Gielow (6 June 2024). "Caça Gripen produzido no Brasil se prepara para decolar em 2025" [Gripen fighter produced in Brazil prepares to take off in 2025]. Folha de S.Paulo (in Portuguese). Archived from the original on 6 June 2024. Retrieved 8 June 2024.

Bibliography

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  • David Baker; Fifth Generation Fighters, Mortons, 2018. Chapter18, "Enter the Sixth".
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