Lockheed Martin F-22 Raptor

[pvanja]

F-22 ima problem i sa instalacijom za kiseonik. Ni taj problem nije resen. Vise puta je cela flota bilia prizemljena zbog ovih problema. Na kraju pre par meseci je LM dobio ugovor na 24 mil USD da otkrije problem.

Lockheed Martin ili naš član LM? Pvanja ubuduće budi tačniji, molim te, da ne pomislimo svašta.

 

Ugovor je naravno dobio Lockheed Martin kao proizovdjac aviona.

[Deligrad]

Posle američkih podmeštanja u trci Rafala i F-35 u Švajcarskoj Francuzi su pobesneli i objavili u svojoj vazduhoplovnoj štampi rezultate simuliranih vazdušnih borbi između Rafala i F-22 u Dubajiu čini mi se 2009. godine. Američki uslov je bio da se o ovome ne priča. Francuska štampa (i to ne samo vazduhoplovna) je preplavljena natpisima da su Rafali u dog fajtu deklasira F-22. Interesantno je da nissam primetio da Ameri to demantuju ali je još interesantnije a što su i Francuzi primetili da se samo par meseci posle ovih simuliranih borbi, slučajno ili ne, odustalo od daljih nabavki lovaca F-22. Glavna zamerka Francuskih pilota je da je F-22 izuzetno trom avion čije manevarske sposobnosti zavise isključivo od promenljivog vektora potiska motora i da je upravo zato vrlo trom na komande. Tako kažu Francuzi pa ako neko ima nešto protiv nek se njima žali a ne meni.

[Deligrad]

Tj njih da demantuje a ne mene.

[dexy]

Možda su i u pravu, F-22 je dosta veći avion od Rafala, i logično je da je tromiji u manevru, tako je i sa MiG-29 i Su-27, koji su praktično iste aerodinamičke koncepcije, samo je razlika u veličini aviona. MiG-29 je u 90% simuliranih borbi pobeđivao, misli se na dogfight borbe. Ja sam čitao i da su francuski Rafali imali velikog uspeha u detekciji F-22 zahvaljujći svojim senzorima.
Naravno, kada je u pitanju trka za tržište, svašta se priča i piše, pa treba te priče uzimati sa dozom rezerve, ali gde ima dima, ima i vatre.

[Solaris]

SAD raspoređuje zrakoplove F-22 Raptor u jugozapadnoj Aziji


Američko ratno zrakoplovstvo rasporedilo je borbene zrakoplove pete generacije F-22 Raptor u jugozapadnoj Aziji, piše Washington Post  pozivajući se na izjavu glasnogovornika zrakoplovstva. U tekstu se navodi da je glasnogovornik ratnog zrakoplovstva, kapetan Phil Ventura, izjavio kako je raspoređivanje zrakoplova F-22 ranije planirano i ono je usmjereno prema poboljšanju "taktičke interoperabilnosti."

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Broj raspoređenih zrakoplova F-22, kao i mjesto gdje se nalaze, nisu otkriveni iz razloga operativne sigurnosti", navodi Washington Post.

Razmještaj zrakoplova dolazi u trenutku kada se međunarodna šestorka priprema za razgovore sa Iranom oko njegovog nuklearnog programa.

Aviation Week, koji je prvi objavio vijest o razmještaju F-22, navodi kako će zrakoplovi djelovati iz zračne baze Al Dhafra u Ujedinjenim Arapskim Emiratima. Nije bilo službene potvrde ove informacije.

F-22 je jednosjed s dva motora, zrakoplov pete generacije koji koristi stealth tehnologiju, ali nikada još nije bio u borbenim djelovanjima.

Primjerak košta 150 mln USD,  a u operativnu uporabu je ušao 2005. Više od 160 zrakoplova F-22 proizveo je Lockheed Martin s ciljem proizvodnje 187 zrakoplova. Prodaja F-22 izvan SAD je zabranjena američkim saveznim zakonom.

Zračne snage SAD su izgubile dva zrakoplova F-22 - tijekom polijetanja u zračnoj bazi Nellis u prosincu 2004. te tijekom pokusnog leta u blizini zračne baze Edwards u ožujku 2009.

   defender

[ssekir75]

ocigledno hoce da im iranci i njega "ukradu" 

[80sBoy]

MiG-29 je u 90% simuliranih borbi pobeđivao, misli se na dogfight borbe.

O kojim borbama govoris?Pitam iz sledeceg razloga,Alexander Velovich — MiG Designer na pitanje novinara  Eric Hehs da li su MIG29 i SUKHOI27 bili jedni drugima konkurenti,dao sledeci odgovor:

Was there any competition between the Mikoyan and Sukhoi designs?

We did not have the competition as you had, for example, on your Advanced Tactical Fighter. That is, two prototypes competing for the same requirements. The aircraft were developed for two different specifications. But we did compete for the scale of the production. And we determined who had the better weapon control system, the better weapon integration, etc. At one point in the development phase, in 1983, the two bureaus thought about competing the aircraft in a series of simulated aerial encounters. That never happened.

[kumbor]

Avion takve namene kao što je F-22 Amerikanci ne bi smeli da dopuste da bude loš i sigurno loš nije. To je za sada jedini lovac 5. pokoljenja. Da je najbolji na svetu - najverovatnije nije i ne bi me čudilo da ozbiljna ispitivanja pokažu da je npr. Rafale bolji avion. Nije po meni problem kakvo je stanje danas - već šta će biti sutra. Još malo pa će i F-22 biti zreli za midlife upgrade, a uveren sam da Evropa nema ni materijalnih ni stručnih kapaciteta da iznese razvoj novog aviona. O tome da će neka zemlja to moći samostalno, ne treba ni trošiti reči, jer je to iluzorno. Vrlo je daleko dan kada će se vazdušna superiornost moći prepustiti bespilotnim letelicama, o tome danas čak niko i ne razmišlja, jer je uopšte borbena upotreba BPL na svom početku.

[markantun]

tesko da bi ikada dosli u situaciju dog fighta. Tu se brate na daljinu skida.....

[Rocker]

Dogfiht se u današnje vreme shvata kao manevarska borba, tj. svaka borba u vidnom polju pilota. Nije to više samo domet topova kao nekada, nego i raketa kratkog dometa. A te situacije bi svakako bile češće od BVR borbi da su suprotstavljene strane slične po odnosu snaga (i brojčano i tehnološki). Manevribilnost je jako bitna stavka kod lovačkog aviona i Ameri mogu samo da prde kako je to prevaziđeno. Ako ni zbog čega drugog, treba pobeći nadolazećoj raketi.

[pvanja]

Bilo bi interesantno (a ameri su sigurno vec tako nesto radili) videti koliko sukoba F-22 na F-22 se zavrsava u klasicnom dogfighta.

[Serbian_SPIRIT]

Da je promašaj veka ne bih se složio sa tobom ali da je jedan od najskupljih projekata američke vojske to sigurno jeste. Da se može se u bliskoj borbi sa svim avionima 4 i 4+ generacije i izaći kao pobednik (ne uvek jer to zavisi i od pilota) i to je prilično sigurno. Da ima dečije probleme, ima, kao svaki avion, ali znajući Amerikance prevazićiće ih. To što je projekat obustavljen i što se više neće proizvoditi može biti problem zbog same obuke pilota koji će leteti na njima. Ali koliko sam ja čitao, planira se (ako već nije uradjen) upgrade F-15-ica sa tehnologijom koja se koristi na F-22 .

[tachinni]

F-22 Fighter Loses $79 Billion Advantage in Dogfights: Report
ABC NewsBy Lee Ferran | ABC News – 11 hrs ago

 


The United States has spent nearly $80 billion to develop the most advanced stealth fighter jet in history, the F-22 Raptor, but the Air Force recently found out firsthand that while the planes own the skies at modern long-range air combat, it is "evenly matched" with cheaper, foreign jets when it comes to old-school dogfighting.

The F-22 made its debut at the international Red Flag Alaska training exercise this June where the planes "cleared the skies of simulated enemy forces and provided security for Australian, German, Japanese, Polish and [NATO] aircraft," according to an after-action public report by the Air Force. The F-22 took part in the exercise while under strict flying restrictions imposed by Defense Secretary Leon Panetta in light of mysterious, potentially deadly oxygen problems with the planes - problems that the Pentagon believes it has since solved.

The Air Force said the planes flew 80 missions during the event "with a very high mission success rate." However, a new report from Combat Aircraft Monthly revealed that in a handful of missions designed to test the F-22 in a very specific situation - close-range, one-on-one combat - the jet appeared to lose its pricey advantages over a friendly rival, the Eurofighter Typhoon, flown in this case by German airmen.

"We expected to perform less with the Eurofighter but we didn't," German air officer Marc Grune said, according to Combat Aircraft Monthly. "We were evenly matched. They didn't expect us to turn so aggressively."

Two other German officers, Col. Andreas Pfeiffer and Maj. Marco Gumbrecht, noted in the same report that the F-22's capabilities are "overwhelming" when it comes to modern, long-range combat as the stealth fighter is designed to engage multiple enemies well-beyond the pilot's natural field of vision - mostly while the F-22 is still out of the other plane's range. Grumbrecht said that even if his planes did everything right, they weren't able to get within 20 miles of the next-generation jets before being targeted.

"But as soon as you get to the merge…" Pfeiffer said, referring to the point at which fighters engage in close-up dog fighting, "in that area, at least, the Typhoon doesn't necessarily have to fear the F-22 in all aspects… In the dogfight the Eurofighter is at least as capable as the F-22, with advantages in some aspects."

In response to the report, a spokesperson for the Air Force, Lt. Col. Tadd Sholtis, told ABC News that one-on-one combat is only one way to evaluate an aircraft's capabilities and said it's not "necessarily the most relevant to every scenario."

"The F-22 is conceived and employed as part of an integrated force that provides offensive capabilities that make close engagements far less likely while retaining the ability to handle close engagements in tandem with other fighters," he said.

Air Force Gen. John Jumper, one of the few airmen to have flown both aircraft, said in 2005 that it is difficult to compare the F-22 and the Eurofighter.

"They are different kinds of airplanes to start with," he said, according to an Air Force Print News report. "It's like asking us to compare a NASCAR car with a Formula 1 car. They are both exciting in different ways, but they are designed for different levels of performance."

The F-22 "can maneuver with the best of them if it has to, but what you want to be able to do is get into contested airspace no matter where it is," Jumper said, referring to the F-22's stealth and supercruise capabilities that are meant to allow the plane to sneak in to hostile territory undetected - an ability the non-stealth Eurofighter lacks.

As for where that contested airspace may be, the Air Force hasn't said. But in April 2011 an executive for Lockheed Martin, the primary manufacturer of the F-22, told ABC News that the plane could "absolutely" find a home in quick strike missions against countries like Iran or North Korea. Over the weekend, the Air Force deployed a squadron of F-22s to Kadena Air Base in southern Japan just over 800 miles south of the North Korean border - a move that comes three months after an undisclosed number of the stealth jets were deployed to an allied base in the United Arab Emirates, some 200 miles from the Iranian mainland.

The F-22 is the single most expensive fighter jet in history at a total acquisition cost of an estimated $79 billion for 187 planes, meaning each plane costs approximately $420 million. Estimates for the Eurofighter Typhoon - the premier fighter for several allied countries including the U.K., Germany and Italy - put that plane at just under $200 million each, according to an April 2011 report by England's Public Accounts Committee.

"[Red Flag was] a mission to get to know each other, the first contact by German Eurofighters in the continental U.S.," Grune said of mock-fighting the F-22s. "We are not planning on facing each other in combat. We want to work together but it was a starter for us to work together. They were impressed, as we were impressed by them."


http://news.yahoo.com/f-22-fighter-loses-79-billion-advantage-dogfights-201119575--abc-news-topstories.html

[duje]

Vir: Defender hr
http://www.defender.hr/

F-22 dobiva automatski sustav dovoda kisika u roku godinu dana
 
Photo: Tech. Sgt. Dana Rosso / Air Force Reserve
Datum objave:
10.04.2014

Puna instalacija automatskog backup sustava za kisik na floti borbenih aviona F-22 očekuje se da bude dovršena u roku godinu dana, izjavio je visoki američki zrakoplovni časnik, a Raptori na Aljasci već su počeli koristiti sustav. USAF je dodijelio više od 30 milijuna USD kroz više ugovora tvrtki Lockheed Martin za instalaciju sustava nakon brojnih prizemljenja i izvješća pilota o simptomima koji uzrokuju hipoksiju na F-22, uključujući nesreću u studenom 2010. na Aljasci.

Većina postojećeg sustava za kisik u F-22 flotu zahtijeva aktivaciju od strane pilota, što ne bi moglo biti u slučaju ekstremnih hipoksija.

[duje]

F-22 Raptor