The Saturn AL-51-F1,[N 1] codenamed izdeliye30,[N 2] is the designation for an afterburning low-bypass turbofan engine being developed by NPO Saturn to succeed the Saturn AL-41F1 for improved variants of the Sukhoi Su-57, as well as new potential tactical fighters such as the Sukhoi Su-75 Checkmate.
AL-51-F1
The AL-51-F1 on an LTS Checkmate mock-up at MAKS 2021.
In the 1990s, the collapse of the Soviet Union resulted in the disruption of funding and lengthy delays of the Mikoyan Project 1.44 for the MFI fifth-generation fighter program along with its engines, the variable cycle 18–tonne (177 kN, 40,000 lbf) class NPO Lyulka-Saturn AL-41F, internally designated izdeliye 20.[1] In 1999, as the MFI and LFI programs were gradually being abandoned, the Russian Defence Ministry initiated the more affordable PAK FA next-generation fighter program to replace the MiG-29 and Su-27. The competition was announced in April 2001, and Sukhoi submitted its T-50 proposal with a pair of 14.5-tonne (142 kN, 32,000 lbf) class Lyulka-Saturn AL-41F1, internally designated izdeliye 117, for the PAK FA.[2][3] Sukhoi was selected as the winner of the competition in April 2002 and in April 2004, it signed a contract with Lyulka-Saturn, now NPO Saturn, to develop the AL-41F1.[4] Despite its name, the engine is actually a highly uprated and improved variant of the earlier-generation Lyulka AL-31, originally designed for the Su-27. While the AL-41F1 used the same basic architecture, it had 80% new parts and applied technology from Lyulka-Saturn's original AL-41F, which was too large for the T-50.[5][6]
Although Sukhoi specified the AL-41F1 in the contract, the bureau anticipates that its T-50 design, eventually designated the Su-57, would be the basis for a family of stealth combat aircraft, with future variants employing more powerful engines. Following a competition between NPO Saturn and MMPP Salyut, the former was selected to develop the new engine, a clean-sheet design designated the izdeliye 30, that would equip the improved Su-57M variant in the mid-2020s.[7][8][9] Compared to the AL-41F1, the new powerplant will have increased thrust, lower costs, better fuel efficiency, and fewer moving parts; the engine also has glass-fibre plastic inlet guide-vanes (IGV) and a new nozzle with serrated flaps to reduce the aircraft's radar signature. Those features, along with subsequently improved reliability and lower maintenance costs will improve the aircraft performance and reliability.[10][11] The izdeliye 30 is designed to have fewer stages than the AL-41F1 and be up to 18% more effective.[12] Full scale development began in 2011 and the engine's compressor began bench testing in December 2014.[12] The first test engines were completed in 2016.[13] The new powerplant is designed to be a drop-in replacement for the AL-41F1 with minimal changes to the airframe.[14]
First flight of the engine on an Su-57 prototype occurred on 5 December 2017 with the second prototype (T-50-2, bort no. 052).[15][16] However, the engine’s development has seen a sluggish flight test pace; originally planned to enter service in the early 2020s, the izdeliye 30’s planned introduction has been delayed to the mid-2020s.[17][18] In 2023, the engine was given the designation AL-51-F1.[19]
Designedit
The AL-51-F1 is a two-shaft low-bypass afterburning turbofan engine. The architecture is a three-stage fan driven by a single-stage low pressure turbine and five-stage high pressure compressor driven by single-stage high pressure turbine.[10] Unlike its AL-41F1 predecessor, the engine has glass-fiber plastic IGVs and convergent-divergent nozzles that use serrated flaps to reduce its radar signature as well as 19% higher thrust-to-weight ratio, 6.4% better specific thrust, and 9% lower specific fuel consumption; estimated thrust is 107.9 kN (24,300 lbf) dry and 166.8 kN (37,500 lbf) in afterburner.[20] The AL-51-F1 has full authority digital engine control (FADEC) to ensure its reliability in various operating conditions.[21]
^Cheberko, Ivan (8 April 2010). . Marker(JSC)(RU). Archived from the original on 13 January 2016. Retrieved 23 June 2014.
^"Новый двигатель с плазменной системой зажигания для Су-57. "Изделие 30" и искусство компромиссов". naukatehnika.com. 19 March 2019. Retrieved 15 June 2019.
^ abcButowski, Piotr (6 January 2020). "Future Of Su-57 Next-Generation Engine Uncertain". Aviation Week.
^"Russian Air Force to Receive the First Production Su-57 in 2018 - Defense Update". Defense-update.com. 17 December 2017. from the original on 21 December 2017. Retrieved 18 December 2017.
^ ab"The testing of a new engine intended for PAK FA will be started in 2014". - Russian Aviation 23 October 2014 at the Wayback Machine, RuAviation.com, 15 November 2012. Retrieved: 19 November 2012.
^"Стали известны сроки первого полета Су-57 с новыми двигателями". Rossiyskaya Gazeta. from the original on 26 September 2017.
^Kozlov, Dmitry. Press conference of "Saturn" 20 October 2014 at the Wayback Machine (RU). AviaPort.ru (RU), 16 July 2013. Retrieved: 21 May 2014.
^"Russia's Su-57 fifth-generation fighter makes first flight with new engine". Tass.com. from the original on 6 December 2017. Retrieved 6 December 2017.
^"VIDEO: Russia flies first Su-57 fitted with new Product 30 engine". Flightglobal.com. 5 December 2017. from the original on 8 December 2017. Retrieved 8 December 2017.
^"Russia's Su-57 fifth-generation fighter performs 16 test flights with new 2nd stage engine". TASS. 6 December 2019. Retrieved 11 December 2019.
^Butowski, Piotr (6 January 2020). "Future Of Su-57 Next-Generation Engine Uncertain". Aviation Week.
^Butowski, Piotr (24 July 2023). "Russia's Fighter Engine Development Is Slow Going". Aviation Week.
^"AIRCRAFT GAS TURBINE ENGINE - THE CROWN OF ENGINEERING THOUGHT". OAK Saturn, UMPO. 10 November 2021. p. 8.
Butowski, Piotr (2021). Su-57 Felon. Stamford, UK: Key Books. ISBN978-1-913870-44-7.
December 06, 2023
saturn, codenamed, izdeliye, designation, afterburning, bypass, turbofan, engine, being, developed, saturn, succeed, saturn, 41f1, improved, variants, sukhoi, well, potential, tactical, fighters, such, sukhoi, checkmate, f1the, checkmate, mock, maks, 2021, typ. The Saturn AL 51 F1 N 1 codenamed izdeliye 30 N 2 is the designation for an afterburning low bypass turbofan engine being developed by NPO Saturn to succeed the Saturn AL 41F1 for improved variants of the Sukhoi Su 57 as well as new potential tactical fighters such as the Sukhoi Su 75 Checkmate AL 51 F1The AL 51 F1 on an LTS Checkmate mock up at MAKS 2021 Type TurbofanNational origin RussiaManufacturer NPO Saturn UMPOFirst run 2016Major applications Sukhoi Su 57M planned Sukhoi Su 75 Checkmate Contents 1 Development 2 Design 3 Applications 4 Specifications AL 51 F1 4 1 General characteristics 4 2 Components 4 3 Performance 5 See also 6 References 6 1 Notes 6 2 References 6 3 BibliographyDevelopment editIn the 1990s the collapse of the Soviet Union resulted in the disruption of funding and lengthy delays of the Mikoyan Project 1 44 for the MFI fifth generation fighter program along with its engines the variable cycle 18 tonne 177 kN 40 000 lbf class NPO Lyulka Saturn AL 41F internally designated izdeliye 20 1 In 1999 as the MFI and LFI programs were gradually being abandoned the Russian Defence Ministry initiated the more affordable PAK FA next generation fighter program to replace the MiG 29 and Su 27 The competition was announced in April 2001 and Sukhoi submitted its T 50 proposal with a pair of 14 5 tonne 142 kN 32 000 lbf class Lyulka Saturn AL 41F1 internally designated izdeliye 117 for the PAK FA 2 3 Sukhoi was selected as the winner of the competition in April 2002 and in April 2004 it signed a contract with Lyulka Saturn now NPO Saturn to develop the AL 41F1 4 Despite its name the engine is actually a highly uprated and improved variant of the earlier generation Lyulka AL 31 originally designed for the Su 27 While the AL 41F1 used the same basic architecture it had 80 new parts and applied technology from Lyulka Saturn s original AL 41F which was too large for the T 50 5 6 Although Sukhoi specified the AL 41F1 in the contract the bureau anticipates that its T 50 design eventually designated the Su 57 would be the basis for a family of stealth combat aircraft with future variants employing more powerful engines Following a competition between NPO Saturn and MMPP Salyut the former was selected to develop the new engine a clean sheet design designated the izdeliye 30 that would equip the improved Su 57M variant in the mid 2020s 7 8 9 Compared to the AL 41F1 the new powerplant will have increased thrust lower costs better fuel efficiency and fewer moving parts the engine also has glass fibre plastic inlet guide vanes IGV and a new nozzle with serrated flaps to reduce the aircraft s radar signature Those features along with subsequently improved reliability and lower maintenance costs will improve the aircraft performance and reliability 10 11 The izdeliye 30 is designed to have fewer stages than the AL 41F1 and be up to 18 more effective 12 Full scale development began in 2011 and the engine s compressor began bench testing in December 2014 12 The first test engines were completed in 2016 13 The new powerplant is designed to be a drop in replacement for the AL 41F1 with minimal changes to the airframe 14 First flight of the engine on an Su 57 prototype occurred on 5 December 2017 with the second prototype T 50 2 bort no 052 15 16 However the engine s development has seen a sluggish flight test pace originally planned to enter service in the early 2020s the izdeliye 30 s planned introduction has been delayed to the mid 2020s 17 18 In 2023 the engine was given the designation AL 51 F1 19 Design editThe AL 51 F1 is a two shaft low bypass afterburning turbofan engine The architecture is a three stage fan driven by a single stage low pressure turbine and five stage high pressure compressor driven by single stage high pressure turbine 10 Unlike its AL 41F1 predecessor the engine has glass fiber plastic IGVs and convergent divergent nozzles that use serrated flaps to reduce its radar signature as well as 19 higher thrust to weight ratio 6 4 better specific thrust and 9 lower specific fuel consumption estimated thrust is 107 9 kN 24 300 lbf dry and 166 8 kN 37 500 lbf in afterburner 20 The AL 51 F1 has full authority digital engine control FADEC to ensure its reliability in various operating conditions 21 Applications editSukhoi Su 57M planned Sukhoi Su 75 Checkmate planned derivative Specifications AL 51 F1 editData from Key Aero 21 Aviation Week 10 General characteristics Type Two shaft turbofan engine Length 4 9 m 190 in comparable to AL 41F1 Diameter 1 28 m 50 in comparable to AL 41F1 Dry weight 1 450 kilograms 3 200 lb Components Compressor 3 stage low pressure 5 stage high pressure Combustors Annular Turbine Single stage low pressure single stage high pressurePerformance Maximum thrust 11 tf 108 kN 24 251 lbf dry thrust 17 tf 167 kN 37 479 lbf with afterburner Thrust to weight ratio 7 45 1 on dry thrust 11 5 1 on afterburner See also editSaturn AL 41Comparable engines Pratt amp Whitney F119 Xian WS 15Related lists List of aircraft enginesReferences editNotes edit Russian AL 51 F1 1 The Russian term izdelie translit izdeliye literally means manufactured article or product References edit Velovich Alexander 1 August 1995 AL 41 engine problems are over says Lyulka Saturn Flight International New AL 41 Unveiled at MAKS 2001 Flight International 27 August 2001 Viktor ChEPKIN Victor CHEPKIN interview Saturn vyhodit iz za tuch Russia Today June 2008 Archived from the original on 2010 06 16 Retrieved 2012 09 21 Butowski 2021 p 27 Plazmennyj motor nplus1 ru 6 March 2019 Podrobnee Kommersant 10 December 2007 Cheberko Ivan 8 April 2010 Creating an engine for the fifth generation fighter Marker JSC RU Archived from the original on 13 January 2016 Retrieved 23 June 2014 Novyj dvigatel s plazmennoj sistemoj zazhiganiya dlya Su 57 Izdelie 30 i iskusstvo kompromissov naukatehnika com 19 March 2019 Retrieved 15 June 2019 Russian Su 57 With Fifth gen Engine Expected Beyond 2025 defenseworld net Retrieved 2020 06 28 a b c Butowski Piotr 6 January 2020 Future Of Su 57 Next Generation Engine Uncertain Aviation Week Russian Air Force to Receive the First Production Su 57 in 2018 Defense Update Defense update com 17 December 2017 Archived from the original on 21 December 2017 Retrieved 18 December 2017 a b The testing of a new engine intended for PAK FA will be started in 2014 Russian Aviation Archived 23 October 2014 at the Wayback Machine RuAviation com 15 November 2012 Retrieved 19 November 2012 Stali izvestny sroki pervogo poleta Su 57 s novymi dvigatelyami Rossiyskaya Gazeta Archived from the original on 26 September 2017 Kozlov Dmitry Press conference of Saturn Archived 20 October 2014 at the Wayback Machine RU AviaPort ru RU 16 July 2013 Retrieved 21 May 2014 Russia s Su 57 fifth generation fighter makes first flight with new engine Tass com Archived from the original on 6 December 2017 Retrieved 6 December 2017 VIDEO Russia flies first Su 57 fitted with new Product 30 engine Flightglobal com 5 December 2017 Archived from the original on 8 December 2017 Retrieved 8 December 2017 Russia s Su 57 fifth generation fighter performs 16 test flights with new 2nd stage engine TASS 6 December 2019 Retrieved 11 December 2019 Butowski Piotr 6 January 2020 Future Of Su 57 Next Generation Engine Uncertain Aviation Week Butowski Piotr 24 July 2023 Russia s Fighter Engine Development Is Slow Going Aviation Week AIRCRAFT GAS TURBINE ENGINE THE CROWN OF ENGINEERING THOUGHT OAK Saturn UMPO 10 November 2021 p 8 a b Butowski 2021 p 89 Bibliography edit Butowski Piotr 2021 Su 57 Felon Stamford UK Key Books ISBN 978 1 913870 44 7 Retrieved from https en wikipedia org w index php title Saturn AL 51 amp oldid 1188566670, wikipedia, wiki, book, books, library,
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