Definition
The section of a gas turbine engine where fuel is mixed with compressed air and ignited to produce the high-energy gas flow that drives the turbine. It contains the combustion chambers (or combustors), fuel nozzles, and igniters, and sits between the compressor section and the turbine section.
Plain English
The part of a jet engine where the fuel is burned. Air comes in from the compressor, fuel is sprayed in and lit, and the hot expanding gases rush out the back to spin the turbine.
Context Anchor
Seen in turbine engine descriptions, maintenance discussions, and systems training for jet and turboprop aircraft.
Derivation
Combustion comes from the Latin combustio, meaning 'a burning up.' The combustion section is literally the burning section of the engine -- the place where the fuel is set alight.
Why Pilots Care
This is the section that adds the energy to the airflow; problems here directly affect engine performance, temperature limits, and overall reliability.
Analogy
Think of it as the engine’s controlled fire area: fuel is not just set on fire anywhere, but burned in a protected part of the engine designed to handle very hot gases.
Intuition Check
Do not think of the combustion section as the whole engine or as the place where power is mechanically turned. It is the burn area that creates the hot gas used by the turbine.
Example Sentence 1
Fuel and compressed air meet in the combustion section, where the igniters light the mixture during engine start.
Example Sentence 2
In the engine, compressed air enters the combustion section where fuel is added and ignited.