Definition
The section of a turbine engine where compressed air is mixed with fuel and ignited, producing the high-temperature, high-energy gas stream that drives the turbine and provides thrust. It is designed to sustain continuous, controlled combustion while protecting surrounding engine structure from the heat released.
Plain English
It is the part of a jet engine where fuel is burned. Air comes in already squeezed by the compressor, fuel is sprayed in, and the mixture burns continuously to produce a hot, fast-moving gas stream.
Context Anchor
Seen in turbine-engine descriptions, maintenance inspections, and discussions of engine temperature, starting, and power problems.
Derivation
From Latin 'combustio,' meaning 'burning up.' The '-or' ending names the device that does the burning, and 'chamber' just means an enclosed space. So a combustor is literally 'the burning device' or 'the burning room' inside the engine.
Why Pilots Care
The combustor is where the engine's energy is actually released. Problems here -- flameout, hot spots, uneven burning -- show up as power loss, exhaust gas temperature changes, or engine damage, all of which affect safe operation.
Analogy
Think of it like the burner area in a furnace: air and fuel meet, burn in a controlled space, and the hot gas is sent onward to do useful work.
Intuition Check
Do not think of the combustor as an explosion chamber. In normal operation, the fuel burns continuously and controllably as air flows through it.
Example Sentence 1
After start, fuel continues to burn steadily in the combustor, producing the hot gas that spins the turbine.
Example Sentence 2
During engine start, fuel enters the combustor where it mixes with air and ignites to produce the gases that spin the turbine.