Suhoj Su-57 Felon

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RIA

India, Russia to develop 2 versions of 5th-generation fighter
15:03 29/ 09/ 2008


NEW DELHI, September 29 (RIA Novosti) - Russia and India will jointly develop two versions of a new fifth-generation fighter, the head of an Indian defense company said on Monday.

A Russian-Indian advanced multirole fighter is being developed by Sukhoi, which is part of Russia's United Aircraft Corporation (UAC), along with India's Hindustan Aeronautics Limited (HAL), under an intergovernmental agreement signed in October 2007.

"The aircraft will have different wings, electronics and radars," HAL Chairman Ashok K. Baweja said after a meeting of the Russian-Indian intergovernmental commission on military technical cooperation in New Delhi.

He also said India will develop a two-seat version to meet the requirements of the Indian air superiority doctrine, while Russia will develop a single-seat fighter.

Russia's Sukhoi aircraft maker earlier said it had started the construction of a prototype of the fifth-generation fighter, which will feature high maneuverability and stealth to ensure air superiority and precision in destroying ground and sea targets.

The Russian version will be built at the Komsomolsk-on-Amur aircraft-manufacturing plant in Russia's Far East.

Flight tests of the fifth-generation fighter will begin as early as 2009, and mass production of the aircraft may start by 2015, Sukhoi said.

Russia's military cooperation with India goes back nearly half a century, and the country accounts for about 40% of Russian arms exports.

Russian-Indian intergovernmental commission sessions are held annually and alternate between New Delhi and Moscow. The previous meeting took place in the Russian capital in October 2007.

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Russian and Indian Versions of 5th Generation Airplane to Have Substantial Differences

The fifth generation fighters intended for Russia and India's air forces that are being jointly developed will have substantial differences. Whereas the Russian air force plans to bring a single-seat variant of the fighter into the inventory, India's air force intends to obtain a twin-seat airplane. This is determined by the doctrine that has been adopted which envisions the solution as an airplane with a wide spectrum of combat missions, "India Today" reports.

As the head of HAL ((in Latin letters)), Ashok Baweja, has announced, the Indian fifth generation FGFA (Fifth Generation Fighter Aircraft) ((in English)) fighter will differ significantly from the Russian variant, since the availability of a second pilot requires increasing ((the size of)) the fuselage, wing and rudder surfaces.

Analyzing the results of the India-Russian intergovernmental commission on military and technical cooperation, A. Baweja reported that the parties made advances in the question of agreeing to the areas of participation in the creation of the new fighters, an agreement on joint development of which was signed in 2007.l As is expected, India will concentrate on the production of light, high-strength composites for construction of the airplanes, the use of which should reduce the fighter's weight significantly.

As Unified Airplane Building Company president Aleksey Fedorov has declared, at the present time the company is determining which part of the work on the creation of the airplane will be transferred to India manufacturers. It is planned to adopt a decision on this question not later than the end of this year.

According to A. Baweja, the new airplane will be created using low-observable technologies, equipped with engines which allow flying at supersonic speeds without using the afterburner, fitted with weapons systems mounted internally that are capable of attacking several targets on the ground, sea and in the air simultaneously and with the newest communications systems.

The first prototype of the FGFA will be equipped with AL-31FP engines. However, according to the wishes of the Indian side, the series-built fighter is supposed to receive a power plant that is 15 - 20 percent more powerful that the existing one. It is planned that the FGFA, which is supposed to reach the Indian air force inventory by 2015, will replace three types of combat airplanes presently in service.

Source: 02.10.08, ARMS-TASS

Dopuna: 26 Okt 2008 11:58

Razlog zašto če Rusi imati obične izduvnike a ne onakve kakve ima F-22
[Link mogu videti samo ulogovani korisnici]

The AL-31FP boasts an axial exit nozzle. That is to say the nozzle is circular. It is known that your overseas counterparts used to try to solve the thrust vector control problem via the use of a flat nozzle that should be easier to swivel. What do you think of that?

In the late 1980s, we were engaged in the development of the flat nozzle too and conducted a thorough research. The Ufa-based Motor Scientific Production Enterprise under the guidance of Chief Designer Alexei A. Ryzhov manufactured an experimental flat nozzle that underwent a series of tests. The conclusions were as follows. Presently, the flat nozzle has two inherent snags which, in principle, have not been dealt with yet. Firstly, the turbine is round but the nozzle is flat with a distance between them being small. The distance cannot be increased because this would lead to an increase in the overall length of the aircraft, a loss of thrust, etc. While transforming the circular gas stream into the flat one, the nozzle, developed by Mr. Ryzhov, was losing 14-17% of thrust. Unfor-tunately, the gas stream cannot be "bent" as we would like it to. It has its own laws too. So far, no one has managed to transform the circular gas stream into the flat one without losing thrust. The very same snag was hit by the Americans in developing their F-117 featuring a non-afterburning engine. Such engines lose approximately 15% of thrust too. However, the F-117 is a specialised Stealth aircraft with the main requirement of ensuring "invisibility". It does not need a real good thrust/weight ratio. That is why the Americans put up deliberately with an unavoidable loss of thrust but benefited from reduced signatures.
Secondly, the other primary problem is weight. The circular TVC nozzle produces only tensile stress while the flat one exerts bending stress as well. Those stresses require special measures to be taken to ensure the nozzle strength in order to avoid deformation of the nozzle. Those measures mean additional weight. The flat nozzle made of metal is heavier than the circular one by approximately half a tonne. Mind you, the whole AL-31FP fitted with its circular swivel nozzle weighs a little bit more than 1500 kg only. So, the use of a flat nozzle implies an extra tonne at the rear of a plane (two-engine are meant here, which make up the most of modern fighters). The problem can be circumvented through the use of the "carbon-carbon" materials which have low specific weight and can stand high temperature. But they burn in the end anyway, since they are based on the very same coal. Nobody has solved the problem of preventing carbon-carbon units from burning during their operation as part of an aircraft engine. Currently, such materials covered by a thick layer of fire-resistant ceramics are used only in manufacturing the control surfaces of rocket engines. The latter are actually disposable since their operation never exceeds 40-50 seconds while an aircraft engine service life amounts to 1,000 hours or more.

So, the problem of ensuring an effective long-term protection of the non-metal nozzle is still to be solved. Thus, development of the flat nozzle encounters two problems - the loss of thrust (and it is not resolved even in theory) and the extra weight. With those two problems in mind, we stick to the circular nozzle.

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Video prikaz T-50 sa štanda Saturna na China Airshow 2008.

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Ovo izgleda kao opasna ljubavna afera. Ko se tu sve svalerao F-15, Mig-31, Mig 1.44, Su 27...

Salu na stranu. Mislim da je jedna od kljucnih stvari da naprave pouzdane motore koji ce imati zadovoljavajuce performanse.

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Dosta lici na F-15, doduse malo presovan.

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Mislim da je to ista-slična slika ovoj:




Dopuna: 22 Nov 2008 0:44

Još jedna slika i mislim da sve počinju da liče jedna na drugu. Skoro večina novih slika ima isti oblik krila, izraženiji LERKS, zakošene i malene vertikalce (naspram Su-27) i obične okrugle izduvnike (svi znamo zašto). Ljudi mislim da bi moralo to biti več to... ono pravo! Jedino što mi smeta kod pogleda ispod aviona to je da če motori da štrlje iz tela umesto da su sliveni sa telom kao kod F-22, ali je najverovatnije to bila cena koju su morali da plate kada su se odlučili da razdvoje motore i sa time dobiju više prostora za oružje.

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@aco
Ajde umanji drugu sliku.

Mislimda je na drugoj slici predstavljen otprilike izgled buduceg T-50.
Zanimljivo je da "stomak" aviona ne izgleda kao kod F-22. Verujem da ce imati veci IC odraz i da nece biti stelt kao F-22.
Ovo je neki cross breeding izmedju F-22 i Su-27/35. Medjutim Rusi uvek idu na to da im cena nije previsoka i da se zadrzi odredjena jednostavnost u proizvodnji.

Oduvek su se razlikovali Amerikanci i Rusi u svom pristupu. U Rusiji inzinjer isprojektuje nesto sto majstor posle treba da napravi. Naravno da majstor raspolaze sa odredjenim alatima i materijalima i na osnovu tih mogucnosti stvaraju. Americki pristup je uvek bio da se projekat ispostuje do poslednjeg detalja i da se, ukoiliko je potrebno, naprave niz novih alata. Razlika je u tome sto Amerika pravi citave male laboratorije, a troskovi se uvek mere milijardama.

Neko ce reci Americki sistem je bolji, ali su Rusi napravili najbolje rakte za lansiranje u kosmos. Amerikanci isto tako kazu da ih jedino razultat interesuje.

Nadam se da ljudima nece smetati sto sam se raspricao, ali zelim potvrditi svoj utisak da ove slike dosta govore o buducem Ruskom nevidljivom.
Jer ne bi trebalo nesto previse fantazirati. Tako da sam sad jako ubedjen u to da ce Ruski stelt zaziveti i sve ovo sto ce raditi narednih godina, a tu prvenstveno mislim na Su-35 i 34, puno ce znaciti za dalji razvoj, a kasnije i proizvodnju, T-50.

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Nadam se da če "stomak" doživeti još kake promene i da če biti malo više stealth nego što je ovde nacrtano. Inače mislim da če manjak steltha kompezirati ugradnjom radara sa večim promerom antene nego što ga F-22 ima (kad na brzinu pomislim) a IC odraz smanjiti sa motorom koji več ima neku vrstu hađenja izduvnih gasova (by-pass višak vazduha).

Jedva čekam sledeču godinu kad če da poleti. Sigurno če biti još snega pored piste kad če se pojaviti ta nova ptica (samo pogledajte prve snimke Mfi-1.44 i Su-35, uvek je sve u okolini pokriveno snegom). I sad sam još čuo da če sledeče godine predstavit i novi tenk T-95 tako da.....jedva čekam 2009.

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@acatomic
Ova druga slika je samo 3d model koji je neko odradio na osnovu prve slike koju si postavio, koja se inace koliko se sećam na kratko pojavila na sajtu prozivađača motora Saturn da bi ubrzo zatim iz nekog razloga ta slika bila uklonjena. Tako da upošte ne mora da znači da će PAK-FA tako izgledati.

I za kraj model koji sam uradio za Rise of the Reds mod

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Lepo Rade.

Još jedna ali ovaj put izgleda kao da je neko fotografisao model pa posle u photoshopu dodao nebo. Maskirna boja i uzorak je sličan onome na drugom prototipu Su-35BM koji je poleteo pre par meseci. Nadam se da vam ne dosađujem sa ovim slikama.