Did You Know: McDonnell Douglas Considered Powering The MD-90 With Propfan Engines
Propfan - Wikipedia
Popular Mechanics - Testing a GE36 Unducted Fan (UDF) engine, or propfan, on a Boeing 727 in the 1980s. | Facebook
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Propfan Power: The Story of the Unducted Fan Engine – Airways
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
General Electric unducted fan propulsor concept Modern technologies... | Download Scientific Diagram
General Electric GE36 - Wikipedia
Ultra-high by-pass (UHB) engines, prop-fans and unducted fans | Helicopters & Aircrafts
Variations of Jet Engines
Jet engine - Turboprops, Propfans, Unducted Fans | Britannica
What Are Propfan Engines? - Aerospace - Quora
The Ultra High Bypass Engine
GE resurrects the propfan aircraft engine, cutting fuel burn by 20%
Avio Aero and the Open Rotor/Clean Sky SAGE 2 project - YouTube
Aerospaceweb.org | Ask Us - Propfan Engines
Why didn't the UDF (Unducted Fan/Propfan) catch on? - Quora
The Dreams And Reality Of A Future Airliner | WIRED
Jet engine - Turboprops, Propfans, Unducted Fans | Britannica
Propfan - Wikipedia
Could an open fan engine cut carbon emissions for more sustainable aviation? | Airbus
Semi unducted fan. - Airliners.net
Could an open fan engine cut carbon emissions for more sustainable aviation? | Airbus
TIL there's something called an Unducted Fan Engine : r/aviation
