from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A turbojet engine in which a fan supplements the total thrust by forcing air directly into the hot turbine exhaust.
- n. An aircraft in which a turbofan is used.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A turbojet engine having a (typically ducted) fan that forces air directly into the hot exhaust and obtains a portion of the thrust from the turbojet and a portion from the turbojet section.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an airplane propelled by a fanjet engine
- n. a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust
The new geared turbofan engines also must balance robustness with weight to actually cut fuel consumption.
Associated Press Above, a V2500 fan disk that is to be part of a Rolls-Royce turbofan engine.
Called “one of the most coveted pieces of military technology in the world,” this $35 million remotely piloted aircraft is powered by a turbofan engine and is about the size of a fighter plane.
The two companies plan to work together in a new venture that will develop engines for future narrow-body aircraft using Pratt's geared turbofan technology.
Last year, Pratt scored a coup when Airbus selected its geared turbofan engine as one of two engine options for the revamped A320.
Increased engineering and development spending on its new geared turbofan engines caused margins at Pratt & Whitney to narrow.
Pratt, a unit of United Technologies Corp., has spent more than $1 billion over the past decade developing a new jet engine called the geared turbofan, which uses very different technology from engines offered by GE and Rolls.
The company, owned by European Aeronautic Defence & Space Co. NV, is offering two engine choices: CFM's Leap-X, and the PW1100G geared turbofan from arch-rival Pratt & Whitney.
The company invested $1 billion to develop a new jet engine—the geared turbofan—in an attempt to get back into the single-aisle-jet business, but is off to a slow start after being frozen out of Boeing Co.'s plan to refresh its 737 jetliner.
The submarine is powered by an enclosed set of propulsion blades at the stern resembling a turbofan jet engine.