Boeing studied a radical 747-500 powered by large propfan engines instead of conventional turbofans. The design aimed to reduce fuel consumption and operating costs while extending range, combining ...

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 ...

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 Boeing 747-500 was a proposed ultra long range jumbo jet powered by advanced propfan engines instead of traditional turbofans. It promised exceptional fuel efficiency and nonstop intercontinental ...

Ukraine and Russia started conducting tests of their new-generation two-shaft propfan engine developed to power the An-70 military transport aircraft and small passenger planes, local media reported ...