GE once thought super-efficient propfans were the future of air travel, until low fuel prices in the late 1980s moved fuel consumption down the list of priorities. Now, it's bringing them back with ...

CFM International’s new push to develop an open-fan engine – a design commonly known as a propfan – marks a return to technology that engine makers developed, then shelved, amid fluctuating oil prices ...

Will spiralling fuel costs and the prospect of carbon credits signal the return of the propfan? Engine makers are dusting off some old concepts On display in Boeing's Future of Flight centre in ...

THE TEST PILOT of the Boeing 727 idled two of his three engines, turned and aimed for a low pass over the runway at the Mohave Airport. At 200 feet above the ground, he streaked by at more than 300 ...