The turbofan jet engine was designed with this knowledge ... Its project, called the Unducted Fan Engine, also is funded in part by NASA. Like the turbofan, the unducted fan engine diverts the ...

One of its rear-mounted jet engines had been replaced with an unusual ... Some called it a propfan, others an unducted fan or open rotor. Whatever the name, many said it marked the return of ...

If jet fuel prices stay high – say ... Meanwhile, GE designed a competing engine called an “Unducted Fan” – a “gear-less, counter-rotating pusher system” designed to be mounted ...

Unducted fans (UDFs), also known as propfans or open rotor engines, first popped up in the 1970s. They look a little odd to the modern eye, with smooth nacelles and air intakes at the front ...

General Electric is joining with NASA to revive studies of its long-abandoned GE36 unducted fan, or “open rotor ... to develop families of fuel-saving engines. GE stresses that the two ...

Promising 60% fuel savings and faster boarding, the 7J7 aimed to revolutionize short-haul flying with advanced materials, fly-by-wire controls, and a unique unducted fan engine. However ...

The Open Fan demonstrator will also be a puller ... to pave the way for a new generation of fuel-efficient unducted—or open fan—engines to enter service around the mid-2030s.