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(aerospace engineering)
A device for augmenting the thrust of a jet engine by burning additional fuel in the uncombined oxygen in the gases from the turbine.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a secondary combustion chamber in certain turbojet engines that is used to augment the engine thrust for a short time (see). An engine equipped with an afterburner is called an afterburning engine.

An afterburner is situated between the turbine and the jet nozzle of a turbojet engine or a dual-cycle engine. The gas that leaves the turbine still contains much oxygen; in a turbojet engine, this gas alone enters the diffuser of the afterburner. In a dual-cycle engine, a mixture of the gas that leaves the turbine and air from a bypass duct enters the diffuser. The speed of the gas flow is reduced in the diffuser, and fuel—usually aviation kerosene—is then injected into the flow. When the fuel is burned in the afterburner, the temperature rises and the exhaust jet velocity increases.

Figure 1. Diagram of an afterburner: (1) diffuser, (2) fuel nozzles, (3) flameholders, (4) lining, (5) engine housing, (6) precombustion chamber

Flameholders are used so that the combustion process occurs over the shortest possible distance. A liner is employed to shield the walls of the afterburner. The afterburner is started by a flame from a precombustion chamber (see Figure 1).

Afterburners may also be used to boost the power of free-piston engines.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

Apple Afterburner

A PCI Express (PCIe) accelerator card for the latest Mac Pro (2019). Afterburner decodes videos that use the ProRes and ProRes RAW codecs, such as QuickTime Player and Final Cut Pro. See PCI Express and Mac Pro.
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References in periodicals archive ?
Also, for the first time in Ireland, there'll be a chance for children to experience Afterburner. At 6:30pm on the Sunday of All Together Now, there'll be a specially designed Kids' Rave, with international DJs playing an hour-long set the whole family can enjoy.
Both of the Blackbird's twin nacelles contain an engine supersonic inlet, the J58 engine with its afterburner, and an exhaust ejector nozzle.
In addition, carbon monoxide emission rates fell below 50 ppm because of the upgraded afterburner system and new controls.
Luckily for the neighbors, the afterburner is extremely efficient.
Afterburner makes several contributions to airpower history, most notably Sherwood's use of new interviews he conducted himself.
We took off, we immediately went into this supercruise profile which you climb in afterburner, you level off at 50,000 feet, you pull it back out of afterburner, you're cruising at better than 1.5 Mach.
Using fluidised bed furnaces, complete with afterburner to comply with the requirements of the Environmental Protection Act, (PG2/9(04), Metal Decontamination Processes, Clayton Thermal Processes Limited offers fast turnround for cleaning of the following:
EPA alleges that Wabash Alloys failed to comply with federal requirements for operating its scrap dryer afterburner, its scrap dryer filter system and its furnace filter system.
Among them is Atlanta-based Afterburner Seminars, which sends fighter pilots, in flight suits, to their customers' shops.
Keynote speakers scheduled to appear include Afterburner Seminars, a team of current and former fighter pilots who apply the art-of-success strategies and execution used in combat missions to issues faced by business executives.
And as these lines were being written, Lockheed Martin's own JSF entry, the X-35A, had just completed its fifth flight, also from Edwards, submitting the aircraft to a series of manoeuvres, including afterburner operation, designed to evaluate the aircraft's basic handling characteristics.
SIR: We note that an article on p86 of the January AR implies that the design of the 'afterburner' luminaire at the Millennium Dome was by Concord Lighting.