*** Posted by justin ***
mobius, to my knowledge their has only been one Su-37 built. And this is basicaly a technology demonstater. This aircraft will not go into production. The closest thing the Russain airforce will get to recieving a Su-37 is the Su-35 which is actualy combat capable. The u-37 was not a combat capable aircraft as i said above, it's a technology demonstrater. It's main purpose was the collection of data from the 2D TVC nozzles it has. These are by no means the bestTVC nozzles on a flanker. The Su-30MKI has nozzle that attemp the 3rd dimension by canting inward. A full swing on the horizontal plane inwards is not possible however because of the tail boom, which houses all kinds of elecronic goodies i.e. EWR, ECM etc. Another thing that should be pointed out is that the Su-37s engines have been remmoved, probably because they would like to put a more advanced TVC nozzle in or to put the original engines and and do more tesrting with some other equipment. The most manueverable aircrafdt with TVC is the F-16 MATIV with the AVEN nozzle this had 360 deflection up to 20 degrees. However i believe a conventional aircraft such as the ef2000 Typhoon has the ability to out manuever TVC aircraft with it's large surface area canards placed well foreward of the cockpit.