Patent ID: 11970969
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A ducted fan engine comprising:
a core engine including a compressor section and including an outer casing at least partially surrounding the core engine;
a nacelle at least partially surrounding the core engine and defining a bypass airflow passage between an inner side of the nacelle and the outer casing of the core engine; and
a compressor bypass bleed system including (a) an exhaust device having (i) a housing having an inlet end and an outlet end, and defining a centerline axis from the inlet end to the outlet end, (ii) an inner flow conditioner arranged at the inlet end, the inner flow conditioner including a plurality of openings for conducting a flow of compressed air therethrough into the housing, and (iii) an exit screen arranged at the outlet end of the housing, the exit screen including a plurality of exit openings therethrough arranged at an acute angle with respect to the centerline axis so as to provide a directional flow of compressed air from the housing therethrough, and (b) a compressor bleed duct system coupling the compressor section to the inlet end of the housing,
wherein the exhaust device is coupled to the outer casing of the core engine, and the exit screen is arranged in an opening through the outer casing to provide the flow of compressed air therethrough into the bypass airflow passage, and
wherein the exit screen defines, in a plan view of an outer surface of the exit screen, a longitudinal centerline axis extending in a same direction as a flow direction of a bypass airflow, and a lateral axis extending orthogonal to the longitudinal centerline axis, the plurality of exit openings being arranged in a plurality of rows of exit openings, including a first row of exit openings arranged on a first side of the longitudinal centerline axis, and a second row of exit openings arranged on a second side of the longitudinal centerline axis opposite the first side, the first row of exit openings extending at a first non-zero angle with respect to the longitudinal centerline axis and the lateral axis, and the second row of exit openings extending at a second non-zero angle with respect to the longitudinal centerline axis and the lateral axis.