Combustor

A combustor is a component or area of a gas turbine, ramjet, or scramjet engine where combustion takes place. It is also known as a burner, combustion chamber or flame holder. In a gas turbine engine, the combustor or combustion chamber is fed high pressure air by the compression system. The combustor then heats this air at constant pressure. After heating, air passes from the combustor through the nozzle guide vanes to the turbine. In the case of a ramjet or scramjet engines, the air is directly fed to the nozzle.

A combustor must contain and maintain stable combustion despite very high air flow rates. To do so combustors are carefully designed to first mix and ignite the air and fuel, and then mix in more air to complete the combustion process. Early gas turbine engines used a single chamber known as a can type combustor. Today three main configurations exist: can, annular and cannular (also referred to as can-annular tubo-annular). Afterburners are often considered another type of combustor.

Combustors play a crucial role in determining many of an engines operating characteristics, such as fuel efficiency, levels of emissions and transient response (the response to changing conditions such a fuel flow and air speed).

Read more about Combustor:  Fundamentals, Emissions, Afterburners, Ramjets, Scramjets

Other articles related to "combustor, combustors":

Combustor - Scramjets
... supersonic combustion ramjet) engines present a much different situation for the combustor than conventional gas turbine engines (scramjets are not gas turbines, they ... While scramjet combustors may be physically quite different than conventional combustors, they face many of the same design challenges, like fuel ... However, as its name implies, a scramjet combustor must address these challenges in a supersonic flow environment ...
JEA Northside Generating Station - CFB Technology
... coal and other fuels efficiently while removing air emissions inside the sophisticated combustor system ... In a CFB combustor, coal or other fuels, air, and crushed limestone or other sorbents are injected into the lower portion of the combustor for initial burning of the fuel ... fluidized by air nozzles in the bottom of the combustor ...
CFM International CFM56 - Design - Combustor
... of the CFM56 feature a single-annular combustor ... An annular combustor is a continuous ring where fuel is injected into the airflow and ignited, raising the pressure and temperature of the flow ... Other types of combustors include can combustors, where each combustion chamber is separate, and canannular which is a hybrid of the two ...
Ramjet - Combustor
... As with other jet engines, the combustor's job is to create hot air, by burning a fuel with the air at essentially constant pressure ... Since there is no downstream turbine, a ramjet combustor can safely operate at stoichiometric fuelair ratios, which implies a combustor exit stagnation temperature of the order of 2400°K for kerosene ... Normally, the combustor must be capable of operating over a wide range of throttle settings, for a range of flight speeds/altitudes ...
Ramjet - Related Engines - Scramjets
... Ramjets always slow the incoming air to a subsonic velocity within the combustor ... is avoided by having a relatively high supersonic air velocity at combustor entry ... Fuel injection is often into a sheltered region below a step in the combustor wall ...