Sixth-generation fighter

Last updated

Sixth-generation jet fighter
Role Fighter aircraft
StatusIn 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, while Japan, Italy, the United Kingdom, France, Germany, Spain, and Sweden have joined together in collaborative multinational programs in an effort to spread development costs. [1] The first sixth-generation fighters are expected to enter service in the 2030s.

Contents

Characteristics

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]


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

Introduction timeline
TBA Flag of Italy.svg Flag of Japan.svg Flag of the United Kingdom.svg Global Combat Air Programme
Flag of France.svg Flag of Germany.svg Flag of Spain.svg Future Combat Air System
Flag of Russia.svg Mikoyan PAK DP
Flag of the United States.svg F/A-XX program
Flag of the United States.svg Next Generation Air Dominance

Italy, Japan and United Kingdom

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

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

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

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

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

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

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]

See also

Related Research Articles

<span class="mw-page-title-main">Fighter aircraft</span> Military aircraft for air-to-air combat

Fighter aircraft are military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter aircraft is to establish air superiority of the battlespace. Domination of the airspace above a battlefield permits bombers and attack aircraft to engage in tactical and strategic bombing of enemy targets.

<span class="mw-page-title-main">Lockheed F-117 Nighthawk</span> American stealth ground-attack aircraft

The Lockheed F-117 Nighthawk is a retired American single-seat, subsonic twin-engine stealth attack aircraft developed by Lockheed's secretive Skunk Works division and operated by the United States Air Force (USAF). It was the first operational aircraft to be designed with stealth technology.

<span class="mw-page-title-main">Lockheed Martin F-35 Lightning II</span> American stealth multirole combat aircraft

The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, all-weather stealth multirole combat aircraft designed for air superiority and strike missions; it also has electronic warfare and intelligence, surveillance, and reconnaissance capabilities. Lockheed Martin is the prime F-35 contractor with principal partners Northrop Grumman and BAE Systems. The aircraft has three main variants: the conventional takeoff and landing (CTOL) F-35A, the short take-off and vertical-landing (STOVL) F-35B, and the carrier-based (CV/CATOBAR) F-35C.

<span class="mw-page-title-main">Lockheed Martin F-22 Raptor</span> American stealth air superiority fighter

The Lockheed Martin/Boeing F-22 Raptor is an American single-seat, twin-engine, supersonic all-weather stealth fighter aircraft developed for the United States Air Force (USAF). As a product of the USAF's Advanced Tactical Fighter (ATF) program the aircraft was designed as an air superiority fighter, but also incorporates ground attack, electronic warfare, and signals intelligence capabilities. The prime contractor, Lockheed Martin, built most of the F-22's airframe and weapons systems and conducted final assembly, while program partner Boeing provided the wings, aft fuselage, avionics integration, and training systems.

<span class="mw-page-title-main">Northrop YF-23</span> Prototype fighter aircraft for the US Air Force Advanced Tactical Fighter program

The Northrop/McDonnell Douglas YF-23 is an American single-seat, twin-engine, supersonic stealth fighter aircraft technology demonstrator designed for the United States Air Force (USAF). The design was a finalist in the USAF's Advanced Tactical Fighter (ATF) competition, battling the Lockheed YF-22 for a production contract. Two YF-23 prototypes were built.

<span class="mw-page-title-main">Future Combat Air System</span> European sixth-generation jet fighter project

The Future Combat Air System (FCAS), is a European combat system of systems under development by Dassault Aviation, Airbus and Indra Sistemas. The FCAS will consist of a Next-Generation Weapon System (NGWS) as well as other air assets in the future operational battlespace. The NGWS's components will be remote carrier vehicles as well as a New Generation Fighter (NGF) - a sixth-generation jet fighter that by around 2045 will replace current France's Rafales, Germany's Typhoons and Spain's EF-18 Hornets.

<span class="mw-page-title-main">HAL AMCA</span> Indian fifth-generation stealth fighter programme

The Advanced Medium Combat Aircraft (AMCA) is an Indian single-seat, twin-engine, all-weather fifth-generation stealth, multirole combat aircraft being developed for the Indian Air Force and the Indian Navy. The Mark-1 variant of the aircraft will be a fifth generation fighter while the Mark-2 variant will have sixth-generation technologies. The aircraft is designed by the Aeronautical Development Agency (ADA) - an aircraft design agency under MoD. A Special Purpose Vehicle (SPV) consisting of ADA, Hindustan Aeronautics Limited (HAL) and a private company is being formed for the development and production of AMCA. In March 2024, the project received approval from India's Cabinet Committee on Security for the prototype development.

<span class="mw-page-title-main">Fifth-generation fighter</span> Classification of sophisticated jet fighter aircraft entering service since 2005

A fifth-generation fighter is a jet fighter aircraft classification which includes major technologies developed during the first part of the 21st century. As of 2024, these are the most advanced fighters in operation. The characteristics of a fifth-generation fighter are not universally agreed upon, and not every fifth-generation type necessarily has them all; however, they typically include stealth, low-probability-of-intercept radar (LPIR), agile airframes with supercruise performance, advanced avionics features, and highly integrated computer systems capable of networking with other elements within the battlespace for situational awareness and C3 (command, control and communications) capabilities.

F/A-XX is a development and acquisition program for a future sixth-generation air superiority fighter to replace the United States Navy's F/A-18E/F Super Hornet and complement the F-35C beginning in the 2030s. A requirement was first identified in June 2008.

<span class="mw-page-title-main">Chengdu J-20</span> Chinese stealth fighter aircraft

The Chengdu J-20, also known as Mighty Dragon, is a twinjet all-weather stealth fifth-generation fighter fighter aircraft developed by China's Chengdu Aerospace Corporation for the People's Liberation Army Air Force (PLAAF). The J-20 is designed as an air superiority fighter with precision strike capability. The aircraft has three variants: the initial production model J-20A, the thrust-vectoring J-20B, and twin-seat aircraft teaming capable J-20S.

<span class="mw-page-title-main">Long Range Strike Bomber</span> US Air Force program in support of Northrop Grumman B-21 Raider development

The Long Range Strike Bomber (LRS-B) is a development and acquisition program to develop a long-range strategic bomber for the United States Air Force, intended to be a heavy-payload stealth aircraft capable of delivering thermonuclear weapons. Initial capability is planned for the mid-2020s. A request for proposal to develop the aircraft was issued in July 2014. The Air Force plans to procure at least 100 of the LRS-B aircraft at a cost of an estimated $550 million each, with potentially as many as 200 units being considered to enter service eventually. A development contract was awarded to Northrop Grumman for its B-21 Raider in October 2015. Due to the sensitive nature much about the project is highly classified and little information is available to the public. As of late 2019, it was known that construction of the aircraft had commenced, and on December 2, 2022, it was unveiled to the public.

Jet fighter generations classify the major technology leaps in the historical development of the jet fighter. Different authorities have identified different technology jumps as the key ones, dividing fighter development into different numbers of generations. Five generations are now widely recognised, with the development of a sixth under way.

The Flygsystem 2020 is an ongoing project by the Swedish Air Force to develop a fifth-generation low-observable fighter jet by 2035. Little public information exists about the project; there are no official statements about the current stage of development, although a video claims to show a miniature prototype test. In 2012, Lieutenant Colonel Lars Helmrich of the Swedish Air Force asked members of the Riksdag to consider the development of a new jet fighter or to upgrade all present JAS 39 multirole fighters to the NG model, claiming the early versions of the aircraft will be obsolete by 2020.

The Future Offensive Air System was a study to replace the Royal Air Force's strike capability, at the time provided by the Tornado GR4. Initial operational capability was expected around 2017. The FOAS was cancelled in June 2005 and was replaced by the Deep and Persistent Offensive Capability (DPOC) requirement, which was itself cancelled in the 2010 Strategic Defence and Security Review.

<span class="mw-page-title-main">BAE Systems Tempest</span> Proposed fighter aircraft concept by BAE Systems

The BAE Systems Tempest is a proposed sixth-generation fighter aircraft that is under development in the United Kingdom for the Royal Air Force (RAF). The aircraft is intended to enter service from 2035, gradually replacing the Eurofighter Typhoon. It is being developed as part of the Future Combat Air System (FCAS) programme by a consortium known as Team Tempest, which includes the Ministry of Defence, BAE Systems, Rolls-Royce, Leonardo, and MBDA UK. £2 billion is planned to be spent by the British government on the initial phase of the project up to 2025.

<span class="mw-page-title-main">General Electric XA100</span> American adaptive cycle engine

The General Electric XA100 is an American adaptive cycle engine demonstrator being developed by General Electric (GE) for the Lockheed Martin F-35 Lightning II and form the basis for the propulsion system for the United States Air Force's sixth generation fighter program, the Next Generation Air Dominance (NGAD).

<span class="mw-page-title-main">Mitsubishi F-X</span> Future Sixth-generation air superiority fighter

The Mitsubishi F-X is a sixth-generation stealth fighter in development for the Japan Air Self-Defense Force (JASDF). It is Japan's first domestically developed stealth fighter jet and will replace the Mitsubishi F-2 by the mid-2030s. Its development is to also bolster the nation's defense industry and potentially enter the international arms market amid Japan's change in defense posture. In October 2020, Mitsubishi Heavy Industries was selected as the lead developer.

The Next Generation Air Dominance (NGAD) is a United States Air Force (USAF) sixth-generation air superiority initiative with a goal of fielding a "family of systems" that is to succeed the Lockheed Martin F-22 Raptor. A crewed fighter aircraft is the centerpiece program of NGAD and has been referred to as the Penetrating Counter-Air (PCA) platform and is to be supported by uncrewed collaborative combat aircraft (CCA), or loyal wingman platforms, through manned-unmanned teaming (MUM-T).

<span class="mw-page-title-main">Global Combat Air Programme</span> UK/Japan/Italy aircraft development and acquisition programme

The Global Combat Air Programme (GCAP) is a multinational initiative led by the United Kingdom, Japan, and Italy to jointly develop a sixth-generation stealth fighter. The programme aims to replace the Eurofighter Typhoon in service with both the Royal Air Force (RAF) and the Italian Air Force, and the Mitsubishi F-2 in service with the Japan Air Self-Defense Force.

A loyal wingman is a proposed type of unmanned combat air vehicle (UCAV) which incorporates artificial intelligence (AI) and is capable of collaborating with the next generation of manned combat aircraft, including sixth-generation fighters and bombers such as the Northrop Grumman B-21 Raider. Also unlike the conventional UCAV, the loyal wingman is expected to be capable of surviving on the battlefield but to be significantly lower-cost than a manned aircraft with similar capabilities. In the US, the concept is known as the collaborative combat aircraft (CCA).

References

Notes

  1. "Japan, U.K. to Work Together on Sixth Generation Fighter Development". Popular Mechanics . 22 July 2022.
  2. 1 2 Baker 2018.
  3. "What to Expect from Sixth-Gen Aircraft". www.nationaldefensemagazine.org.
  4. "Future fighter program poses key test for US Air Force's design method". www.defensenews.com.
  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.
  21. Mizokami, Kyle (28 March 2017), "'Sixth Generation' Fighters Jets Are Already Taking Shape", Popular Mechanics, archived from the original on 27 August 2018, retrieved 27 August 2018
  22. "The Sixth Generation Fighter", Air Force Magazine, October 2009, archived from the original on 10 August 2011, retrieved 28 December 2010
  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.
  40. Navy's Next Fighter Likely to Feature Artificial Intelligence, USNI, 28 August 2014, archived from the original on 1 September 2014, retrieved 29 August 2014
  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. 1 2 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.

Bibliography