Engine Makers Tackle Incremental Improvements
GE, Snecma and Williams are the only manufacturers known to have engines currently in development.
Rolls-Royce
Rolls-Royce

The number of engines known to be in the design or development phase is relatively low, compared to what it used to be a few years ago. Several engine manufacturers are therefore redeploying their efforts to incremental improvements and, for the longer term, research or demonstration programs. Currently in the certification testing phase are GE's Passport, Snecma's Silvercrest and Williams International's FJ33-5 and FJ44-4A-QPM.


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