One of the more animated discussions in civil aviation recently has surrounded the choice of engine – or engine options – to power Boeing’s proposed new mid-market airplane (NMA). But with that ...

In the 1980s, Boeing unveiled the 7J7—a twin-aisle, propfan-powered aircraft designed to replace the aging 737 and 727 fleets. Promising 60% fuel savings and faster boarding, the 7J7 aimed to ...

The Open Fan demonstrator will also be a puller, or tractor, configuration with a single stage of rotating blades and a second nonrotating stage of active, variable-pitch stators. Credit: CFM CFM ...

General Electric designed this proof-of-concept turboprop “unducted fan” engine as part of NASA’s Advanced Turboprop Project, which was aimed at overcoming the three-fold increase in fuel prices ...