Developing new aircraft powered by novel technologies such as un-ducted fans and hydrogen-burning engines remains essentially infeasible without billions and billions of dollars in direct government ...

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 prospect of a propfan-powered airliner has been revived, with Safran Group revealing that it is evaluating unducted fan technology as a possible powerplant for the next generation of single aisles ...

GE says it is looking seriously at unducted fan technology as demand for new products like the next-generation narrowbody are better understood. The engine maker notes the reasons now are the same as ...

As a pilot looking at Airbus’s New Aircraft Concepts Research (Nacre) design operationally, where does the ice go from the unducted fan: into the other engines and all over the tail? After a heavy ice ...

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 ...

WHEN A MODIFIED MD-80 airliner flew at the 1988 Farnborough air show in Britain, it was supposed to represent the future of air travel. One of its rear-mounted jet engines had been replaced with an ...