Definition 1 of 2
Definition
A cone-shaped component installed in the rear of a turbine engine's exhaust section that smooths and straightens the flow of hot gases leaving the turbine. It sits in the centre of the exhaust duct, behind the last turbine wheel, and is supported by radial struts. By gradually increasing the area through which the exhaust gases pass, it reduces turbulence and prevents the exhaust stream from collapsing inward on itself as it leaves the engine.
Plain English
A cone-shaped piece at the back of a jet engine that smooths the hot exhaust gases as they exit, so the flow stays steady and efficient.
Context Anchor
Seen in turbine engine construction, exhaust system inspections, and maintenance descriptions of the rear section of a jet engine.
Derivation
From its shape (a cone) and its function (handling exhaust gases). The cone shape is what gradually expands the flow area and stabilises the gas stream as it exits.
Why Pilots Care
A damaged exhaust cone can reduce engine efficiency, increase turbulence, and affect thrust output during flight.
Intuition Check
Do not read “exhaust cone” as the whole exhaust pipe or the hot gas itself. Here, it means a specific cone-shaped engine part that shapes the flow of gases leaving a turbine engine.
Example Sentence 1
During the post-flight inspection, the mechanic checked the exhaust cone for cracks and signs of overheating.
Example Sentence 2
Hot gases exit smoothly through the exhaust cone, helping maintain steady engine thrust.