Su-57 novi ruski lovac

375

Su-57 novi ruski lovac

online
  • Pridružio: 10 Jun 2008
  • Poruke: 4196

http://vz.ru/news/2012/2/24/563859.html

Ništa novo, samo jedan mali dodatni podatak da je brži (sa forsažom i brez forsaža) od F-22 i J-20 Smile

Nego mene zanima koliki bi bio plafon leta Su-XX ako za F-22 kažu da je 22 000m? Šta sve utiče na max. visinu?



Registruj se da bi učestvovao u diskusiji. Registrovanim korisnicima se NE prikazuju reklame unutar poruka.
offline
  • Pridružio: 17 Sep 2010
  • Poruke: 24232

^

Taj inace ruski podatak o plafonu leta za F-22 od 22000m ( pitanje je i kojem prakticnom tj.operativnom ili dinamickom ) treba uzeti sa rezervom .Na netu se najcesce srece podatak o 19800m.
Jaka pogonoska grupa ali i odnos potisak/masa su od presudnog znacaja za plafon leta.Vec sam pomenuo jednom prilikom kako smo mogli da vidimo iskakanje venecuelanskih Su-30MK na 22 ili 23 km nebitno .
Naravno lovci sa turbomlaznim pogonom imaju prednost ( MiG-25 ) kada je operativni plafon u pitanju .



offline
  • Pridružio: 25 Maj 2005
  • Poruke: 274

O T-50 u novostima
http://www.novosti.rs/vesti/planeta.299.html:367791-Ruski-stelt-superioran

offline
  • Pridružio: 23 Okt 2010
  • Poruke: 1267

Ja bi jos samo dodao da su "wing loadnig" i karakteristike motora, odnosno procenat gubitka snage na velikim visinama vrlo bitni. Takodje dolazi do fenomena koji se nazivaju "shock stall - mach bufet" i "coffin corner" koji zavise od uzgonskih svojstava krila.

http://www.flightlearnings.com/2009/08/30/high-spe.....oundaries/

http://en.wikipedia.org/wiki/Coffin_corner_%28aviation%29

Takodje mogu da postoje restrikcije vezane za kompresiju kabine i optimalnu visinu sa koje avion moze bezbedno da se spusti na nize visine u slucaju dekompresije.

offline
  • Pridružio: 08 Sep 2005
  • Poruke: 5743

New Delhi: The Indo-Russian fifth generation fighter aircraft (FGFA) is superior than the similar Chinese and American rival fighter jets which include the J 20 Black Eagle and the F-22 Raptor, a top Russian military commander claimed.

India and Russia are jointly developing the Sukhoi T-50 PAK FA FGFA for their respective air forces and have plans of producing over 400 of these highly-advanced fighter jets.

A F-22 Raptor fighter jet rolls out of the assembly plant during a ceremony marking the occasion at the Lockheed Martin plant in Marietta on 13 December 2011. Tami Chappell/Reuters


Commander of the Russian Air Force Colonel General Alexander Zelin told Russian news agency RIA Novosti that his country’s government has decided to give top priority to the development of the joint venture aircraft.

“While comparing Russia’s T-50 PAK FA with the US F-22 Raptor and China’s Chengdu J-20 Black Eagle, one concludes that the T-50 is superior to its foreign analogues in terms of its maximum speed in afterburner and standard modes, maximum range and thrust-to-weight ratio,” he said.

The Russian Air Force Commander said that despite the comparable dimensions and weight of the Chinese J20 Black Eagle and the F-22 raptor, “the T-50 has much shorter take-off and landing runs. Moreover, its on-board equipment has better specifications than its foreign equivalents”.

India signed a preliminary design contract with Russia recently for the aircraft and is planning to induct around 250 of them starting from 2017.

Commenting on the flight tests schedule of the FGFA, Zelin said, “Tests are now taking place as planned in line with specific decisions.Over 100 flights have been performed and all the specifications obtained during the tests confirm T-50 project requirements.”

“The tests involve three fixed-wing aircraft, and three more aircraft will arrive in the near future. All in all, the tests will involve 14 aircraft,” he added.

In another development, the Russian nuclear-powered attack submarine, K-152 Nerpa, will reach India on 30-31 March, an Indian defence ministry official said.

“We expect the submarine to arrive in India on March 30-31,” the official told Ria Novosti. The submarine, which has been leased to India, is on way to Visakhapatnam, the official said.

The delivery of the submarine which was scheduled to be in 2008 got delayed after 20 people lost their lives due to gas leakage during sea trials.

offline
  • Pridružio: 16 Feb 2012
  • Poruke: 79
  • Gde živiš: Czech-Morava

Mhhh...speed does noot mean better.Compare F-18 verzus MIG-29

offline
  • Pridružio: 05 Feb 2012
  • Poruke: 101

ko zna kakvi ce da budu monkey modeli.

offline
  • mickie 
  • Zaslužni građanin
  • Pridružio: 21 Jan 2012
  • Poruke: 531

Dve stvari mi upadaju u oci:


Sa gornje strane, izmedju motora je praznina. To moze da se iskoristi da se poveca dubina spremnika za oruzje ili da se poveca nosivost goriva. Dakle da izmedju motora ne bude ovo ulubljenje nego da sve od kokpita do repa bude jedna celina u visini motora. To bi i sa aerodinamcke strane bilo bolje.



Druga stvar isto to, samo od ispod. Ne vidim razlog za prazninu medju usisnicima i motorima kad moze da se poveca dubina spremnika kako bi moglo da se nosi vece oruzje. I mozda je bolje da umesto dva odvojena spremnika postoji jedan duzi. Tako bi cak mogla da stane jedna velika A-Bomba kad je to potrebno, ili vise malih konvencionalnih, opet po potrebi. Tako bi PAK FA lako mogao da bude i lovac-bombarder.

To je neko moje zapazanje kako bi PAK FA mogao da se doradi. Cini mi se da su kinezi sa J-20 primenili upravo ova resenja, barem sa gornje strane. Za ovo drugo donje ne mogu da nadjem sliku da vidim.

offline
  • Pridružio: 07 Dec 2011
  • Poruke: 736

to ne mora nužno biti bolje aerodinamičko rješenje. možda upravo ta i slična udubljenja pomažu pri odvođenju stlačenog zraka uz stijenke aviona pri transsoničnim i supersoničnim brzinama i smanjuju ukupni otpor. I možda stražnji prostor za oružje nema smisla da je dublji jer je ionako postavljen prilično iza centra mase pa je ograničen težinom oružja koja se ondje mogu nositi.

offline
  • Pridružio: 17 Maj 2008
  • Poruke: 12241
  • Gde živiš: Srbija

Ruski stelt superioran

Citat:Komandant ruske avijacije general Aleksandar Zelin objavio karakteristike aviona T-50. Sleće i uzleće s piste od 350 metara, a američki - 915 metara

Arrow http://www.novosti.rs/vesti/planeta.299.html:367791-Ruski-stelt-superioran

Ko je trenutno na forumu
 

Ukupno su 1059 korisnika na forumu :: 30 registrovanih, 5 sakrivenih i 1024 gosta   ::   [ Administrator ] [ Supermoderator ] [ Moderator ] :: Detaljnije

Najviše korisnika na forumu ikad bilo je 3195 - dana 09 Nov 2023 14:47

Korisnici koji su trenutno na forumu:
Korisnici trenutno na forumu: A.R.Chafee.Jr., acatomic, Belac91, Bobrock1, BratSrpska, Dannyboy, Denaya, DENIRO, djuradj, dule10savic, Georgius, HrcAk47, kolle.the.kid, Komentator, Koridor, ljubicics, loon123, MrNo, Panter, RED4G-304, Reddot, royst33, savaskytec, tubular, vaso1, vladas87, voja64, vukdra, YU-UKI, šumar bk2