AFAIK there exists only the designations EJ230 and 270 if at all. These are proposed versions of the EJ200 with hardware modifications. Within 2 stages the industry offers a steped thrust increasment of 20 % in the first stage and 30 % in the second stage.
From the Eurojet website http://www.eurojet.de/default2.php?p=4&cid=10:
The specification for the EJ200 also required a growth potential of more than 15%. This will be achievable by a number of methods, including most notably increased airflow and/or increased Turbine Entry Temperature (TET) and higher fan compression ratio, while remaining within current dimension and weight parameters. The engine core has actually been designed with an even greater growth in mind.
The Spanish company ITP has developed a thrust vectoring nozzle for the EJ200, first successfully bench-tested in 1998. This would offer advantages in terms of the aircraft’s agility and could also benefit all-up weight and drag.
Interestingly, I was talking to my brother who works for Rolls-Royce the other day. He got to sit in the cockpit of Eurofighter (the lucky b*****d), and chat to the pilots. They all agreed that the Eurofighter is the best aircraft they have ever piloted (as it bloody well should be), but that the improvement they would most like to see was more power.
Of course, the pilots then went on to say how impressed they were that the plane will accelerate straight up, so my brother suspects pilots will say they want more power no matter how much they’ve got! 🙂
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