bypass duct


Also found in: Wikipedia.

bypass duct

A cold stream duct. The air from the fan that flows outside the combustion chamber and helps cool it as well as the exhaust duct. Also called an exhaust duct on a turbofan engine. See bypass engine.
References in periodicals archive ?
The most promising configuration involves the use of deflector vanes installed near the bypass duct that cause the bypass plume to tilt relative to the core plume.
Tilting the bypass stream is possible by means of fixed or variable vanes installed near the exit of the bypass duct.
The PW305 sets new standards for business aircraft propulsion, including a unique fan that maximizes airflow into both the engine core and the bypass duct, ensuring optimum performance and efficiency.