That thing is a C-D-Nozzle, just it being square to help mixing jet exhaust and surrounding airflow to minimize the IR-signature. Especially as the aerdynamics should be worse for a square exhaust as it induces wake vortices at its corners which is the reason it helps mixing the different airflows.
The Bypass ratio of 0,4:1 of the EJ200 is for one just minimal different from the F119 with 0,3 and second it was chosen as a compromise to accomodate bigger engine cores for future developments. The difference in supercruise capability shouldn’t be more than a few percent in this case as the Fan of the EJ200 compresses even better than the F119 Fan.
The F119 has lower T3 and higher SOT aiding dry thrust. The excess dry thrust pushes a draggier airframe to 1.7+ mach supercruise. This is aided heavily by the lower bypass ratio. If it was only a few percent better it would not have such raw performance benefit.
I was under the impression the convergent-divergent nozzle of the Eurofighter is not fully variable and that was one of the upgrades that set apart the TVC nozzle upgrade theorized for it.
The TWS bug is annoying. But what else is majorly wrong with the radar? The scan speed isn’t great but as I’ve been saying for months there’s no information on that so we’d be hard pressed to fix it.
