Hi GreenKnight121
Wow, thanks for such insightful comment. 3 questions has arisen from your comments, (and bear in mind I am just a simple engineer).
1. When you say "... it takes more than intake design to allow a sub-sonic engine design to deal with supersonic flight," does this mean the velocity triangles are changed for the first stage, i.e. your angles are lessened and you accept a lower pressure rise coz you are getting a stage that can accept wider flow regimes?
2. Was the steam ingestion problem the result in the mass flow increasing or did the steam alter the total temperature of the flow?
3. Do you know why the 12th stage compressor was targeted for the fix?
Regards
Mark