초록 ▼

A nacelle structure (14) for a gas turbine engine (4) extends upstream from the engine air inlet (10) and includes an external surface (18) and an internal surface (16). The external surface (18) is concentric about a linear centerline (22) which is disposed parallel to the free airflow stream (6) e

A nacelle structure (14) for a gas turbine engine (4) extends upstream from the engine air inlet (10) and includes an external surface (18) and an internal surface (16). The external surface (18) is concentric about a linear centerline (22) which is disposed parallel to the free airflow stream (6) encountered by the nacelle (14) in flight. The internal surface (16) is concentric about a curved centerline (30), the curved centerline (30) being parallel to the free airflow stream (6) at the nacelle inlet (12) and parallel to the engine centerline (26) at the engine air inlet (10) for smoothly directing the internal airflow stream (32) into the engine air inlet (10).

대표청구항 ▼

A nacelle structure extending upstream of the air inlet opening of an aircraft gas turbine engine, comprising: an external surface defined by end points of radii extending perpendicularly to a linear, external surface centerline; an internal surface defined by end points of radii extending perpendic

A nacelle structure extending upstream of the air inlet opening of an aircraft gas turbine engine, comprising: an external surface defined by end points of radii extending perpendicularly to a linear, external surface centerline; an internal surface defined by end points of radii extending perpendicularly to a curved internal surface centerline; wherein the external surface centerline is oriented parallel with an external free flow of air encountering the nacelle structure, the external surface centerline further forming a droop angle with respect to the engine centerline, and wherein the internal surface centerline tangentially intersects both the external surface centerline and the engine centerline for smoothly directing a portion of the flowing air into the engine air inlet opening.