Engine manufacturer has sought several patents for open-fan designs in the past two years, even as it publicly commits to ...

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.

Object Details Manufacturer General Electric Aircraft Engines Physical Description Type: Turboprop Power Rating: 14,914 kw (20,000 eshp) at 1,300 rpm Compressor: 7-stage axial Combustor: Annular ...

In addition, while ostensibly covering the entirety of an unducted fan engine, another filing contains detailed, although broad, specifications for the size and profile of the swirl recovery vanes ...

U.S. engine makers looked at so-called unducted fans in the1980s before dropping the idea when oil prices fell. At the time, such engines were also considered too noisy.