Engine makers GE and P&W race to boost efficiency as net-zero carbon goal looms | Analysis | Flight Global
Propfan Engine with GB for 3D printer - YouTube
Jet engine - Turboprops, propfans, and unducted fan engines | Britannica
Could an open fan engine cut carbon emissions for more sustainable aviation? | Airbus
Aerospaceweb.org | Ask Us - Propfan Engines
The Short, Happy Life of the Prop-fan | Air & Space Magazine| Smithsonian Magazine
TIL there's something called an Unducted Fan Engine : r/aviation
Pratt & Whitney-Allison Unducted Fan Engine | Download Scientific Diagram
Propfan Power: The Story of the Unducted Fan Engine – Airways
Safran Open Rotor – The Next Engine Design Leap? - Mentour Pilot
Popular Mechanics - Testing a GE36 Unducted Fan (UDF) engine, or propfan, on a Boeing 727 in the 1980s. | Facebook
Props” for McDonnell Douglas: The Unducted Fan Projects That Never Took Off
GE and Safran tout new 'open rotor' engine future for sustainable aviation | The Seattle Times
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Evolutionary Trail Of The Open-Fan Engine | Aviation Week Network
General Electric unducted fan propulsor concept Modern technologies... | Download Scientific Diagram
Unducted Fan - Airliners.net
Commercial-Engine OEMs Detail Emissions Work | Air Transport News: Aviation International News
Propfan - Wikipedia
Propfan - Wikipedia
Jet engine - Turboprops, propfans, and unducted fan engines | Britannica
The Nuclear-Powered Jet Engine, Ceramic Turbines and Other Gems from the History of Flight | GE News
The UDF: A Great Idea That Suffered From Bad Timing And Image
Why didn't the UDF (Unducted Fan/Propfan) catch on? - Quora
File:UDF-cross-section.png - Wikimedia Commons
Aviation My Love - KNOWLEDGE 😍 👉PROPFAN ENGINE 🥰 👉A propfan, also called an open rotor engine, unducted fan, or ultra high-bypass turbofan, is a type of aircraft engine related in concept
