Definition
Describes an engine fitted with a turbocharger — a compressor driven by the engine's exhaust gases that pressurizes the intake air before it enters the cylinders. This restores or increases the air density delivered to the engine, allowing it to maintain rated power at altitudes where a normally aspirated engine would lose power due to thinner air.
Plain English
The engine uses its own exhaust to spin a small turbine that pumps extra air into the cylinders. This lets the engine keep producing strong power even high up, where the air is thin.
Context Anchor
Seen when comparing engine types and discussing how an engine keeps power available during climb or at higher altitude.
Derivation
‘Turbo’ comes from the Latin turbo, meaning a spinning or whirling thing — the spinning turbine wheel driven by exhaust. ‘Supercharged’ simply means the intake air is pressurized above normal atmospheric pressure (charged with extra air). Together: an engine whose intake air is pressurized by an exhaust-driven turbine.
Why Pilots Care
Maintains sea-level power output to higher altitudes, improving climb rate, cruise speed, and takeoff performance from high-elevation airports.
Analogy
It is like giving the engine a helper fan that pushes more air in when the outside air is too thin for the engine to breathe as well on its own.
Intuition Check
Turbo supercharged does not just mean “very powerful” or “faster.” In aviation, it specifically means the engine uses exhaust-driven air compression to help maintain power.
Example Sentence 1
Because the aircraft was turbo supercharged, the engine maintained full rated power as the pilot climbed through 15,000 feet.
Example Sentence 2
Because the engine is turbo supercharged, the pilot can select full throttle at high density altitudes without the usual power loss.