Annular duct
A duct, or passage, that surrounds an object. The annular fan-discharge duct surrounds the core engine.
Aviation Maintenance Technician Handbook — Powerplant, p. G-2
A duct, or passage, that surrounds an object. The annular fan-discharge duct surrounds the core engine.
Aviation Maintenance Technician Handbook — Powerplant, p. G-2