One proposal was the MD-94X which was fitted with unducted fan turbofan engines.
From the en.wikipedia.org
The most common jet propulsion engines flown are turbojet, turbofan and rocket.
From the en.wikipedia.org
This version was made obsolete by the arrival of the turbofan-powered 707-120B.
From the en.wikipedia.org
The airline was unusual in that two different turbofan engines were operated.
From the en.wikipedia.org
A turbofan engine is a gas turbine engine that is very similar to a turbojet.
From the en.wikipedia.org
Russia's Klimov offered a variant of the RD-33 turbofan engine to power the fighter.
From the en.wikipedia.org
There are two general types of turbofan engines, low bypass and high bypass.
From the en.wikipedia.org
Some types of turbofan engine are more susceptible to damage than others.
From the independent.co.uk
Another important factor is modern turbofan aircraft like the Airbus 320.
From the edition.cnn.com
More examples
Fanjet: an airplane propelled by a fanjet engine
Fanjet: a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust
A turbofan is a type of aircraft jet engine based around a gas turbine engine . Turbofans provide thrust using a combination of a ducted fan and a jet exhaust nozzle. Part of the airstream from the ducted fan passes through the core, providing oxygen to burn fuel to create power. ...
Device located at the bottom of electric bathroom radiators, and as standard on mixed models, that can pulse hot air to raise the temperature rapidly throughout the bathroom. The sensor is fitted with a dust filter that can be removed and cleaned.
Gas turbine engine in which a large diameter fan in a short duct generates thrust.
Heads can be fitted to a variety of existing sprayer types, including axial fan airblast units and both tractor-mounted and self-propelled boom sprayers.
A type of jet engine in which a certain portion of the engine's airflow bypasses the combustion chamber.
Gas turbine engine with large diameter forward fan. Air is dueled from the tips of these fan blades and by-passed around the engine, and added to the normal jet efflux to provide high propulsive efficiency.
Jet engine, part of the airflow only passes through a fan, the cold air produces most power and makes the engine more fuel-efficient and reduces noise (see turbojet)