11.09.2010, 01:10
Zitat:Hast Du irgendwelche Referenzen zum M 2,2 Test der F-22?
Ich lass davon mahl in USAF Magazin etwas und es stand auch in Air Forces Monthly, ich habe grad versucht die Links wieder zu finden leider noch ohne Erfolg. Es gibt auch Berichte die den Top Speed mit 2,45 Mach angeben (was ich aber auch nicht glaube).
Dazu:
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Zitat:…..F-22 Raptor displaying its F119-PW-100 engines on full afterburnerThe F-22 is a fifth-generation fighter that is considered a fourth-generation stealth aircraft by the US Air Force. Its dual afterburning Pratt & Whitney F119-PW-100 turbofans incorporate thrust vectoring, but in the pitch axis only, with a range of ±20 degrees. The maximum thrust is classified, though most sources place it at about 35,000 lbf (156 kN) per engine. Maximum speed, without external weapons, is estimated to be Mach 1.72 in supercruise mode; as demonstrated by General John P. Jumper, former U.S. Air Force Chief of Staff, when his Raptor exceeded Mach 1.7 without afterburners on 13 January 2005. With afterburners, it is "greater than Mach 2.0" (1,317 mph, 2,120 km/h), according to Lockheed Martin; however, the Raptor can easily exceed its design speed limits, particularly at low altitudes, with max-speed alerts to help prevent the pilot from exceeding them. Former Lockheed Raptor chief test pilot Paul Metz stated that the Raptor has a fixed inlet; but while the absence of variable intake ramps may theoretically make speeds greater than Mach 2.0 unreachable, there is no evidence to prove this. Such ramps would be used to prevent engine surge, but the intake itself may be designed to prevent this. Metz has also stated that the F-22 has a top speed greater than 1,600 mph (Mach 2.42) and its climb rate is faster than the F-15 Eagle due to advances in engine technology, despite the F-15's thrust-to-weight ratio of about 1.2:1, with the F-22 having a ratio closer to 1:1. The US Air Force claims that the F-22A cannot be matched by any known or projected fighter……
Untern strich kann man also sagen das die F22 ohne Nachbrenner Mach 1,7 schafft mit müssten also Mach 2,0+ locker drin sein. Andere Quellen die ich wie gesagt momentan nicht finde gaben den Speed bei Mach 2,25+ auf großer Höhe an was auch realistisch erscheint. Auch Paul Metz ist als Testpilot nicht grad eine unglaubwürdige Quelle, wenn auch Piloten ihr Flugzeug gerne in den Himmel loben.