Identification [LE QUIZZ du forum !!]
Re: Identification [LE QUIZZ du forum !!]
Merci à MDJ_01 de me faire découvrir ce moteur atypique d'un constructeur russe...
Re: Identification [LE QUIZZ du forum !!]
NK93
Moteur à double fan contrarotatif et à pales variables (10 devant, 8 derrière), en aval de ce fan, se trouverait une version modernisée du NK12.
Poussée affichée 18 T pour le moment, moteur bien mystérieux dont on trace les origines vers 1987.
http://www.flightglobal.com/news/articl ... 09-216667/
développement:
Moteur à double fan contrarotatif et à pales variables (10 devant, 8 derrière), en aval de ce fan, se trouverait une version modernisée du NK12.
Poussée affichée 18 T pour le moment, moteur bien mystérieux dont on trace les origines vers 1987.
http://www.flightglobal.com/news/articl ... 09-216667/
développement:
At the time of the 1980s competition, Dvigateli NK (then known as Samara) chose a more innovative approach to engine development with its NK-93 shrouded propfan. The objective at the beginning of the project was to develop a 175kN (39,6001b) high-bypass engine for subsonic transport aircraft with high fuel efficiency of 0.49 kg/kgf/h in cruise conditions.
The development of the NK-93 began in 1987, with testing starting in 1989.
The fan engine now under development in ojmara is a 17:l-bypass geared powerplant which features two synchronised counter-rotating integrally shrouded propfans. About 87% of the thrust comes from the propfans, while the gas generator produces the rest. Seven complete test engines have been assembled since 1989. The NK-93's forward propfan rotates clockwise, while the aft propfan rotates counterclockwise. Each is driven by a separate shaft from the powerplant's 22,350kW (30,000hp) planetary gearbox, which has seven satellites.
There have been problems in developing a gearboxof this size with adequate bearing durability, oil distribution and gear-teeth strength. These problems are claimed to have been solved. The planetary gearbox is being designed for a service life of 20,000h, and time between overhauls should be about 7,500h.
By the end of 1994, Samara had accumulated 2,800 test hours, including the tests of the NK-110, the gas-generator prototype, and l,700h of testing on the NK-93 and its components.
The required take-off thrust of 176kN has been achieved with specific fuel consumption of 0.234kg/kgf/h. Turbine-inlet temperatures of 1,700°C have been achieved, along with a mass airflow of 976kg/s, a gas generator pressure ratio of 25:1, a maximum thrust of 200kN, reverse thrust of 37kN and shaft rotation speeds of 1,580RPM; 11.270RPM and 15.480RPM for each of the shafts respectively.
A department head at Dvigateli NK says that, in 1995-6, the NK-93 is to be tested at the barometric chambers of the TsIAM Central Aviation Motors Institute at
Turayevo, to obtain speed-altitude characteristics. After that, the engine may be installed on an Ilyushin 11-76 testbed.
The programme has not received sufficient financial backing from the state budget and is "running on enthusiasm", according to another Dvigateli NK official. The flight tests, initially planned for 1994, have been delayed for three years. One source at Samara says that, technically, he does not see any difficulties in
taking the engine to its production phase, despite finance being provided at a fraction of what is really needed.
Re: Identification [LE QUIZZ du forum !!]
Merci pour l'info
C'est le nouveau turbofun ,le must des moteurs russe
C'est le nouveau turbofun ,le must des moteurs russe
Re: Identification [LE QUIZZ du forum !!]
ok mais précise un peu là j'avais pas remarqué !mdj_01 a écrit :of course! but i'm talking about the engine
Re: Identification [LE QUIZZ du forum !!]
aucune relation avec le topic
“Avant une guerre, la science militaire fait figure de science, comme l'astronomie. Après une guerre, elle tient plus de l'astrologie." R. West
Re: Identification [LE QUIZZ du forum !!]
Bon, comme personne ne se décide, un PZL P 24. Allez Blackcode, une plus difficile.
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- Muqaddam (مقدم)
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Re: Identification [LE QUIZZ du forum !!]
Bah je le savais que ce serait du gâteau pour toi60b a écrit :Bon, comme personne ne se décide, un PZL P 24. Allez Blackcode, une plus difficile.
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- Muqaddam (مقدم)
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Re: Identification [LE QUIZZ du forum !!]
ce ne serait pas des avions hongrois destinés pour pour un spectacle 3D ?
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- Liwaa (لواء)
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Re: Identification [LE QUIZZ du forum !!]
moi je sais, et pourquoi c'est comme ça les initiales c'est JB:S
"It's better to stand and fight. If you run away, you'll only die tired"
Peace Through Superior Firepower
The whole world must learn of our peaceful ways, by FORCE !
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- Liwaa (لواء)
- Messages : 4259
- Inscription : 31 mars 2012, 11:24
- Localisation : DAAE-LFMT
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Re: Identification [LE QUIZZ du forum !!]
aaaaaah en meme temps !Blackcode a écrit :ce ne serait pas des avions hongrois destinés pour pour un spectacle 3D ?
"It's better to stand and fight. If you run away, you'll only die tired"
Peace Through Superior Firepower
The whole world must learn of our peaceful ways, by FORCE !