TIL there's something called an Unducted Fan Engine : r/aviation
Whatever happened to propfans? | News | Flight Global
New Open Rotor Engine Concept Cuts Aviation Emissions by 20%
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Propfan - Wikipedia
Propfan Power: The Story of the Unducted Fan Engine – Airways
Jet engine - Turboprops, Propfans, Unducted Fans | Britannica
File:UDF-cross-section.png - Wikimedia Commons
Pratt & Whitney-Allison Unducted Fan Engine | Download Scientific Diagram
How RISE Arose: The Story Behind Decades of Innovations That Bring CFM to a Pivotal Moment - The GE Aerospace Blog | Aviation & Flight News
Why didn't the UDF (Unducted Fan/Propfan) catch on? - Quora
Aerospaceweb.org | Ask Us - Propfan Engines
What Are Propfan Engines? - Aerospace - Quora
GE resurrects the propfan aircraft engine, cutting fuel burn by 20%
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Safran Open Rotor – The Next Engine Design Leap? - Mentour Pilot
The Ultra High Bypass Engine
Gaining Altitude: Airbus A380 To Test CFM's Open-Fan Architecture In Flight | GE News
Variations of Jet Engines
The Nuclear-Powered Jet Engine, Ceramic Turbines and Other Gems from the History of Flight | GE News
Props” for McDonnell Douglas: The Unducted Fan Projects That Never Took Off
AYJET Uçuş Okulu - Types Of Turbine Engines *Turbojet *Turbofan *Turboprop and Turboshaft *Propfan *Turbojet A turbojet engine is a gas turbine engine that works by compressing air with an inlet and
The Dreams And Reality Of A Future Airliner | WIRED
