Definition
The duct that carries hot exhaust gases away from the engine cylinders after combustion. In a turbocharged engine, the exhaust pipe routes these gases to the turbine side of the turbocharger before discharging them overboard, allowing the energy in the exhaust stream to drive the turbocharger.
Plain English
The pipe that carries the hot, used-up gases out of the engine. On a turbocharged airplane, this pipe first sends those gases through the turbocharger to spin it, then dumps them outside.
Context Anchor
Seen in turbocharging discussions, engine compartment inspections, and maintenance descriptions of the exhaust system.
Derivation
From Latin exhaurire, meaning to draw out or empty. The exhaust pipe is literally the pipe that draws the spent gases out of the engine.
Why Pilots Care
The condition and routing of the exhaust pipe directly affect turbo efficiency, engine power output, and safety; cracks or restrictions can cause loss of boost or exhaust leaks.
Intuition Check
Do not think of an exhaust pipe only as the visible tailpipe at the end of a car. In this aviation context, it is part of the engine exhaust path and may feed the turbocharger before the exhaust goes overboard.
Example Sentence 1
During preflight, the pilot checked the exhaust pipe for cracks and signs of staining that might indicate a leak.
Example Sentence 2
Before flight, check the exhaust pipe connections to confirm there are no leaks that could reduce turbo performance.