Post-PFI Soviet/Russian aircraft projects

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The Soviet post-PFI projects are several Soviet and Russian Air Force projects initiated to replace the PFI-era aircraft.

The result of the LPFI project was the Mikoyan MiG-29 Fulcrum.
The result of the TPFI project was the Sukhoi Su-27 Flanker.

During the mid-1970s, the Soviets initiated the I-90 fighter project, Sh-90 attack aircraft project, B-90 bomber project and M-67 reconnaissance aircraft project. The I-90 consisted of a heavyweight fighter project (MFI) and a lightweight fighter project (LFI). The LFI was subsequently cancelled and replaced by the LFS during the early-mid-1990s. In the early 2000s, both the MFI and LFS projects were canceled in favor of the

PAK FA
program.

The Sh-90, B-90 and M-67 projects were never realized, although Yakovlev's and Mikoyan's entries for the Sh-90 were based on the Yak-130 and MiG-AT, respectively. Both are trainer aircraft currently being offered for sale by the two companies, with the Yakovlev Yak-130 accepted into service and starting to replace Aero L-39 Albatros as the primary jet trainer of the Russian Air Force. Sukhoi, Mikoyan and Yakovlev were the major competitors in these projects, although Tupolev and Myasishchev may have also submitted entries for some projects.

History

In 1969, the

"teen"-series of aircraft, including the Grumman F-14 Tomcat, McDonnell Douglas F-15 Eagle, General Dynamics F-16 Fighting Falcon and McDonnell Douglas F/A-18 Hornet. In response, the Soviets initiated the Perspektivnyi Frontovoy Istrebitel (Перспективный Фронтовой Истребитель, ПФИ, PFI, "Perspective Frontline Fighter") project to develop a multirole fighter aircraft capable of countering the new generation of U.S. aircraft. The PFI project then branched into two projects, the Tyazholy Perspektivnyi Frontovoy Istrebitel, "Heavy Perspective Frontline Fighter" (TPFI) and the Lyogkiy Perspektivnyi Frontovoy Istrebitel, "Light Perspective Frontline Fighter" (Лёгкий Перспективный Фронтовой Истребитель, LPFI). The goal of the TPFI project was to develop a fighter capable of long-range flight, primarily to intercept hostile aircraft, which resulted in the Sukhoi Su-27 "Flanker" series of aircraft. The LPFI was intended to develop a light multi-role fighter with short flight range, but capable of providing air-to-ground support when deployed close to the frontlines, which resulted in the Mikoyan MiG-29
"Fulcrum" series of aircraft. After successfully developing fighters for these two projects, the Soviets initiated a project to develop a next-generation aircraft in response to potentially new American aircraft. These projects included fighters, attack aircraft, and bombers.

I-90

The I-90 (Istrebitel, Fighter) project consisted of the MFI (heavyweight fighter) and LFI (lightweight fighter). Eventually, the LFI was cancelled in favor of the LFS, although both the LFS and MFI were subsequently canceled in favor of the PAK FA.[1][2]

MFI

Main articles: Mikoyan Project 1.44 and Sukhoi Su-47
Su-47 was developed by Sukhoi to match the MiG 1.44
.

The goal of the Mnogofunksionalni Frontovoy Istrebitel ("Multifunctional Frontline Fighter"; MFI) project was to create a heavy fighter with exceptional air-to-ground capabilities. Initially, Mikoyan worked on the project 512, which resembled the

F-15 because of the boxed air intakes on the side of the fuselage, although the wing was placed lower and the fuselage design was slightly altered. However, Mikoyan's proposed design was the MiG 1.42, an aircraft with two 2D thrust vectoring engines, canards, wedged air intakes on the bottom (much like the Eurofighter Typhoon) and 16 flight control surfaces. A design was later upgraded to the MiG 1.44
, which has a modified radome, 3D thrust-vectoring engines, modified wings and a refueling probe.

Yakovlev's entry was visually similar to Mikoyan's entry - a canard-equipped fighter - although Yakovlev's design had only one engine and boxed air intakes on the sides. The Yak-MFI design never materialized and only remained a mockup.

Sukhoi did not submit an entry, due to their confidence in the Sukhoi Su-27 Flanker design. Eventually, Mikoyan was awarded the development of the MFI project. However, as work on the MFI progressed, Sukhoi discovered that the MiG-MFI design was a major threat to the Su-27 design, and began a heavy fighter design of their own, although the MFI project was awarded to Mikoyan two years before. This design resulted in the S-32 forward-swept wing fighter with two engines and canard foreplanes. The design was later altered to add an elevator and modified canards. The design was once again modified to have 2D thrust-vectoring nozzles. Instability in the design resulted in a further upgraded fighter named the S-37, later redesignated the Sukhoi Su-47.

A 1.44 prototype was eventually built and flown in early 2000, although the project was cancelled in 1997 in favor of the PAK FA.

LFI

The LFI (Lyogkiy Frontovoy Istrebitel, Light Frontline Fighter) project was intended to develop a lightweight fighter with respectable air-to-ground capabilities. Yakovlev proposed the

Gripen
in that it had canard foreplanes, a delta wing and one engine. Mikoyan entered the MiG 4.12. MiG could not afford to develop both the MFI and LFI, so their LFI entry was eventually withdrawn.

LFS

The focus of the LFS (Lyogkiy Frontovoy Samolyot, Light Frontline Aircraft) project shifted to creating a strike fighter with significant surface attack capability, while retaining respectable air combat abilities. Work on the project began around 1994, although the program was officially initiated in 1999. Yakovlev's entry resembled the

LERX which gave it an ability to sustain controlled flight at a very high angle of attack. The LFS project was cancelled in 2001 in favor of the PAK FA program, although the I-2000 later influenced the design of the HESA Shafaq.[citation needed
]

PAK FA

Main article: Sukhoi Su-57

The

T-50 Golden Eagle
). Both Mikoyan and Yakovlev have a 15% share on development and production of the aircraft. The flight testing phase of the aircraft began in 2010, and the aircraft entered service in 2020 as the Su-57.

Russian-Indian fifth-generation fighter program

Main article: Sukhoi/HAL FGFA

FGFA was the earlier designation for the Indian version of the PAK FA, while the combined project is now called the Perspective Multi-Role Fighter (PMF).[4] The completed joint Indian/Russian versions of the single-seat or two-seat PMF will differ from the current T-50 flying prototypes through the addition of stealth, supercruise, sensors, networking, and combat avionics for a total of 43 improvements.[5] Two separate prototypes will be developed, one by Russia and a separate one by India. According to HAL chairman A.K. Baweja (speaking shortly after the India-Russia Inter-Governmental Committee meeting on 18 September 2008), both the Russian and Indian versions of the aircraft will be single-seaters.[6] The FGFA will be predominantly armed with weapons of Indian origin such as the Astra, a beyond-visual-range missile (BVR) being developed by India. Although in keeping with the Russian BVR doctrine of using a variety of different missiles for versatility and unpredictability to countermeasures, the aircraft is expected to have compatibility with various missile types. The FGFA may include systems developed by third parties. India withdrew from the program in 2018 due to concerns over performance and technology sharing.[7]

Mikoyan LMFS

Main article: Mikoyan LMFS

The Mikoyan LMFS (Russian: Микоян ЛМФС) was a proposed Russian stealth, single-engine fighter aircraft, loosely based on the canceled Mikoyan Project 1.44. Images revealed a fighter design with substantially larger internal weapons bays. It was designed to replace the Mikoyan MiG-29.[8]

Sh-90

Main article:
Shturmovik-90

The Sh-90 (Shturmovik, Attack Aircraft) project intended to develop an attack aircraft to replace the

Su-25
. The main entries consisted of modified trainer designs from MiG and Yakovlev, and an unusual two-cockpit design from Sukhoi. The project was later cancelled due to the emergence of modernized Su-25 variants, such as the Su-25T, Su-25TM (Su-39) and Su-25KM.

Instead, the creation of the

Su-34
may replace the Su-25 for future strike missions and fulfill similar combat roles.

LUS

Yakovlev proposed the Yak-133, a modified version of this Yak-130.
Mikoyan proposed the MiG-AC, a modified version of this MiG-AT.

The LUS (Lyogkiy Udarnyi Samolyot, "Light Strike Aircraft") project's goal was to develop an attack aircraft to succeed the Sukhoi Su-25. Sukhoi's design was an unusual aircraft with two cockpits, a v-tail and a large fuselage. The left fuselage was to contain the piloting equipment and radar sensors, whereas the right fuselage was to accommodate the weapons systems and a fire-control system. The aircraft was to be powered by one or two non-afterburning engines, and payload was to be stored within two large internal bays. Yakovlev and Mikoyan's design were based on their modified trainer models, the Yak-133 and the MiG-AC, respectively. The Yak-133 was a modification of the Yak-130, and the MiG-AC was a modification of the MiG-AT. The project was canceled in the early 1990s due to newer models of Su-25 proving to be sufficient in achieving this goal.

B-90

The B-90 (Bombardirovshik, "Bomber") project was intended to develop a next generation bomber aircraft to replace

PAK DA.[9] Myasishchev responded with a derivative of the Myasishchev M-67 high altitude reconnaissance aircraft, the M-6LK-M. The program was later canceled due to lack of funds.[10]

MDP interceptor

See also:
Mikoyan MiG-41

«MDP» (Multifunctional Distant Interceptor), was to be a very long-range replacement for the MiG-31.

KS-172.[14]

See also

Notes and references

  1. ^ Venik (1999-06-20). "LFI Bibliography". aeronautics.ru. Archived from the original on 2001-02-09. Retrieved 2007-12-15.
  2. ^ Iron Eagles. "LFI and LFS: Russia's future strike and fighter craft". Tripod. Retrieved 2007-12-15.
  3. ^ "Yakovlev Yak-41 'Freestyle'". www.aeroflight.co.uk. Retrieved 27 November 2018.
  4. ^ Menon, Jay. "India And Russia To Ink R&D Phase Of T-50 Program." Archived 2014-02-21 at the Wayback Machine Aerospace Daily & Defense Report, 21 August 2012.
  5. ^ Mathews, Neelam. "India’s Version of Sukhoi T-50 Delayed by Two Years." AIN, 25 May 2012.
  6. ^ Pandit, Rajat. "India and Russia going to sign biggest-ever defence deal worth $ 35 billion." Time of India, 19 August 2012.
  7. ^ Siddiqui, Huma (2019-10-05). "Make in India: IAF will focus on the indigenous AMCA for its fighter fleet, says Air Chief RKS Bhadauria". Financial Express. Retrieved 2020-01-09.
  8. ^ ЛМФС. Paralay.com. Retrieved on 2011-04-26.
  9. ^ T, Kabir (2002-05-07). "Sukhoi T-60 Project". Key Publishing. Archived from the original on 2008-04-01. Retrieved 2007-12-14.
  10. ISBN 978-1-85780-320-4
    .
  11. ^ "701", Russian air defence guide, FAS.
  12. ^ Artamonov, Alexander (3 November 2017). "Russia hurries to create new MiG-41 fighter jet because Putin said so". Pravda report. Retrieved 27 November 2018.
  13. ^ "product 7.01". Test pilot. RU. Retrieved 27 November 2018.
  14. ^ https://www.flightglobal.com/FlightPDFArchive/1994/1994%20-%200672.PDF [dead link‍]
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