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Sukhoi Su-75 Checkmate

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Su-75 "Checkmate"
A static prototype of the Sukhoi LTS at the MAKS Airshow 2021
Role Stealth light multirole fighter
National origin Russia
Manufacturer Sukhoi
Designer Sukhoi
First flight 2023 (planned)
Introduction 2026-2027 (planned)
Status Under development

The Sukhoi Su-75 "Checkmate"[1] (Russian: Сухой Су-75; LTS, short for Light Tactical Aircraft in Russian), is a single-engine, fifth-generation stealth fighter aircraft under development by Sukhoi for export and for the Russian Aerospace Forces.[2] The Sukhoi Design Bureau also designates the aircraft as T-75 with marked registration RF-0075.[3]

Development

A prototype was unveiled at the 2021 MAKS air show with President of Russia Vladimir Putin in attendance. The Checkmate's maiden flight is expected in 2023 and initial deliveries are planned for 2026-2027.[4][5][6] The Checkmate is designed to be low cost and for export,[7] and may compete with the Lockheed Martin F-35 Lightning II and Shenyang FC-31 aircraft of the same light to medium-weight category.[8][9][10] Production is forecast to be 300 planes over 15 years.[11][12]

According to the chief executive of Rostec, Sergei Chemezov, the LTS ‘Checkmate’ Fighter Jet is expected to cost US $25-30 million each.[13]

Design

Overview

The Su-75 Checkmate has a divertless inlet, a v-shape tail and internal weapons bays—all features intended to reduce radar signature. Its vast wings imply Sukhoi designed the fighter to fly at high altitudes—40,000 feet or higher.[2][14]

The angular ventral inlet, which wraps around the lower nose section, share features with a diverterless supersonic inlet (DSI) design similar to Boeing X-32 aircraft.[15][4] Instead of separate horizontal and vertical stabilizers with moving rudders and elevators, the Su-75 fighter has “ruddervators” identical to that of Northrop Grumman YF-23.[16][15] Ruddervators require sophisticated flight-control systems to be developed by Sukhoi as the functionality does not exist in Su-35 and Su-57 fighters.[16]

According to the jet's designers, the Checkmate is designed to fly with a range of up to 3,000 km (1,864 mi), carry a payload of up 7,400 kg (16,314 lb), and reach speeds of up to Mach 1.8-2.[5][17][18] The fighter jet will also feature an internal weapons bay with 5 missiles and an autocannon.[17][19]

Engine

The powerplant appears to be the NPO Saturn Izdeliye 30 engine which will also power the Sukhoi Su-57's Su-57M variant.[20][3] The izdeliye 30 is designed to be 30% lower specific weight than its AL-41F1 predecessor, and up to 18% more effective, with an estimated thrust of 107.9 kN (24,300 lbf) dry and 171.7 kN (38,600 lbf) in afterburner. Once in series production, the Izdeliye 30 engine will have a much longer life span than other Russian engines.[21][22]

Cockpit

Due to restrictions preventing taking cockpit photos, NBC News Matt Bodner, the first Western journalist able to see the jet in person, provided a preview without a point of view photo. According to Bodner, the cockpit layout is identical to the Su-57 with a glass cockpit with two 38 cm (15 in) main multi-functional LCD displays similar to the arrangement of the Su-35S. The cockpit has a wide-angle (30° by 22°) head-up display (HUD).[23]

Avionics

The electronic infrastructure of the Checkmate is all open-architecture and makes use of “Matryoska” diagnostics systems that are mostly on-board.[10] According to Yuri Beliy, NIIP radar design bureau plans to develop a low-cost AESA radar for the aircraft.[10]

Variants

An unmanned variant is reportedly in development, a two-seat version can be developed if requested, and a carrier-based version[10] is also under consideration.[24]

Potential operators

Rostec is anticipating that Argentina, India and Vietnam are primary export destinations of the aircraft, as well as some African countries could buy the aircraft.[25]

Specifications [1]

General characteristics [10]

  • Crew: 1
  • Powerplant: 1 × NPO Saturn Izdeliye 30 engine
  • Payloads: 7,400 kg (16,314 lb)

Performance[26]

Maximum speed: Mach 1.8

Ferry Range: 3,000 km (1,864 mi)

Thrust/weight: 1.00 +

g limits: 8.0 [15]

Service ceiling: 40,000 + feet [2][14]

Armament[27][28]

Avionics[10]

See also

Related development

Related lists

References

  1. ^ a b Karnozov, Vladimir (2021-07-21). "Russia targets low cost, high performance with Su-75 Checkmate fighter". Flight Global. Archived from the original on 2021-07-21.
  2. ^ a b c Axe, David. "Russia's New Fighter Breaks Cover—It's Got 'Stealth' Written All Over It". Forbes. Archived from the original on 2021-07-18. Retrieved 2021-07-30.
  3. ^ a b Donald, David (2021-07-20). "New Sukhoi Fighter Design Unveiled at MAKS". AINonline. Archived from the original on 2021-07-20. Retrieved 2021-07-20.
  4. ^ a b Newdick, Thomas. "Russia's Checkmate Light Tactical Fighter Is Officially Unveiled (Updated)". The Drive. Archived from the original on 2021-07-20.
  5. ^ a b Isachenkov, Vladimir (2021-07-20). "Putin hails Russia's air power as new fighter goes on view". AP NEWS. Archived from the original on 2021-07-20. Retrieved 2021-07-20.
  6. ^ Jenkins, Cameron (2021-07-20). "Russia unveils prototype for advanced stealth fighter jet". TheHill. Archived from the original on 2021-07-20. Retrieved 2021-07-20.
  7. ^ "Putin Unveils Russia's New Single Engine Jet 'LTS Checkmate Fighter'". www.defenseworld.net. Archived from the original on 2021-07-20. Retrieved 2021-07-20.
  8. ^ Szondy, David (2021-07-26). "Sukhoi shows off Checkmate 5th-Gen fighter to compete with F-35". New Atlas. Archived from the original on 2021-07-27. Retrieved 2021-07-27.
  9. ^ Liu, Zhen (2021-07-25). "India expected to seek new Russian stealth fighter to counter China". South China Morning Post. Archived from the original on 2021-07-25.
  10. ^ a b c d e f Johnson, Reuben (2021-07-22). "Russia's New SU-75 Checkmate Promises A Lot. Can It Deliver?". Breaking Defense. Archived from the original on 2021-07-22. Retrieved 2021-07-28.
  11. ^ Stolyarov, Gleb; Balmforth, Tom (2021-07-20). "Putin inspects new Russian fighter jet unveiled at air show". Reuters. Archived from the original on 2021-07-20. Retrieved 2021-07-20.
  12. ^ "Sukhoi Su-75 Checkmate - LTS - Light Tactical Aircraft". www.globalsecurity.org. 2021-07-24. Archived from the original on 2021-07-25. Retrieved 2021-07-25.
  13. ^ "Russian 'Checkmate' Stealth Fighter has Launch Customer, to Cost $30 Million Apiece". www.defenseworld.net. 2021-07-20. Archived from the original on 2021-07-20.
  14. ^ a b Axe, David (2021-07-22). "Who's Going To Pay for Russia's Checkmate Stealth Fighter? Probably Not Russia". Forbes. Archived from the original on 2021-07-22. Retrieved 2021-07-30.
  15. ^ a b c Makichuk, Dave (2021-07-20). "Checkmate: Russia's newest, most advanced fighter jet". Asia Times. Archived from the original on 2021-07-20. Retrieved 2021-07-30.
  16. ^ a b Axe, David. "Look Closely At Russia's Checkmate Fighter—Its Tail Is One Key To Its Stealth". Forbes. Archived from the original on 2021-07-20. Retrieved 2021-07-30.
  17. ^ a b "Official presentation of the New Sukhoi LTS Checkmate or Screamer", YouTube.com, 2021-07-20, archived from the original on 2021-07-21, retrieved 2021-07-25
  18. ^ Шерзад, Тимур (July 20, 2021). "Раскрыты характеристики новейшего однодвигательного истребителя «Сухого»". Телеканал «Звезда» (in Russian). Archived from the original on 2021-07-20.
  19. ^ "YouTube". www.youtube.com.[dead link]
  20. ^ Díaz, Pablo (2021-07-20). "Sukhoi Checkmate: An advanced yet affordable match for the F-35 Lightning II". aviacionline. Archived from the original on 2021-07-21. Retrieved 2021-07-20.
  21. ^ Wolf, Fabrice (2019-12-09). "Su-57's new engine not yet available". Meta-Defense.fr. Archived from the original on 2019-12-26. Retrieved 2021-07-30. {{cite web}}: |archive-date= / |archive-url= timestamp mismatch; 2020-12-26 suggested (help)
  22. ^ Newdick, Thomas; Rogoway, Tyler (2021-07-16). "Now We Know Russia's Mysterious New Fighter Is A Single-Engine Design (Updated)". The Drive. Archived from the original on 2021-07-16. Retrieved 2021-07-30.
  23. ^ "Russia Unveils New Fighter Jet Viewed As Competitor To America's F-35", YouTube.com, NBC News, 2021-07-26, archived from the original on 2021-07-27, retrieved 2021-07-30
  24. ^ Sineva, Milena; Azanov, Roman. ""Шах и мат". Конструктор Стрелец: новый истребитель превзойдет все мировые аналоги". TASS (in Russian). Archived from the original on 2021-07-21.
  25. ^ "The Checkmate aircraft will have no built-in gun for the first time in decades". PravdaReport. 2005-11-22. Archived from the original on 2021-07-21. Retrieved 2021-07-28.
  26. ^ Suciu, Peter (2021-07-26). "Russia's New Checkmate Su-75 Stealth Fighter Has Another Trick Up Its Sleeve". 19FortyFive. Archived from the original on 2021-07-28. Retrieved 2021-07-28.
  27. ^ Lieser, Ethen Kim (2021-07-22). "Russia's New Su-75 'Checkmate' Stealth Fighter Has a Serious Problem". 19FortyFive. Archived from the original on 2021-07-23. Retrieved 2021-07-28.
  28. ^ Filseth, Trevor (2021-07-24). "Russia's New 'Checkmate' Su-75 Stealth Fighter Has Enormous Wings". The National Interest. Archived from the original on 2021-07-25. Retrieved 2021-07-28.

Media related to Sukhoi S-75 at Wikimedia Commons

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