Abstract: An example compressor bleed slot apparatus includes an annular compressor casing, a blade row mounted for rotation about a centerline axis inside the compressor casing, a bleed slot passing through the forward section of the compressor casing, wherein the bleed slot is bounded by inboard and outboard walls defined within the compressor casing, the bleed slot extending along a slot axis, at least a portion of the bleed slot lying within an axial extent of the blade row, an array of struts interconnecting the inboard and outboard walls, and an annular supplemental flange extending radially outward from the forward section of the compressor casing, wherein at least a portion of the supplemental flange is axially positioned within an axial extent of the bleed slot, wherein the supplemental flange includes a necked-down portion adjacent the forward section of the compressor casing, the necked-down portion positioned axially between an inlet of the bleed slot and an outlet of the bleed slot.

Abstract: An example compressor bleed slot apparatus includes an annular compressor casing, a blade row mounted for rotation about a centerline axis inside the compressor casing, a bleed slot passing through the forward section of the compressor casing, wherein the bleed slot is bounded by inboard and outboard walls defined within the compressor casing, the bleed slot extending along a slot axis, at least a portion of the bleed slot lying within an axial extent of the blade row, an array of struts interconnecting the inboard and outboard walls, and an annular supplemental flange extending radially outward from the forward section of the compressor casing, wherein at least a portion of the supplemental flange is axially positioned within an axial extent of the bleed slot, wherein the supplemental flange includes a necked-down portion adjacent the forward section of the compressor casing, the necked-down portion positioned axially between an inlet of the bleed slot and an outlet of the bleed slot.

Abstract: A compressor bleed slot apparatus includes: an annular compressor casing; a stator vane row disposed inside the compressor casing; a blade row mounted for rotation about a centerline axis inside the compressor casing, axially downstream of the stator row; a bleed slot passing through the compressor casing, wherein the bleed slot is bounded by inboard and outboard walls defined within the compressor casing, the bleed slot having an inlet positioned axially between the stator vane row and the blade row, the bleed slot extending along a slot axis, at least a portion of the bleed slot lying within an axial extent of the blade row; an annular array of struts interconnecting the inboard and outboard walls; and an annular supplemental flange extending radially outward from the compressor casing, wherein at least a portion of the supplemental flange is axially positioned within an axial extent of the bleed slot.

Abstract: Bleed air system includes bleed port with annular bleed slot in a compressor inner casing surrounding flowpath circumscribing a centerline in compressor inner casing. Inner and outer slot walls bound bleed flow passage through the bleed slot. Annular array of arcuate shields radially inwardly bound the bleed flow passage downstream and aft of inner slot wall. Each shield includes integrally-formed axially forward retaining portion, downstream portion, and upstream portion therebetween. Clipping means clips retaining portion to aft facing radial wall of annular lip on inner slot wall. Clipping means may be arcuate or annular clip having forward annular portion attached to annular aft flange substantially perpendicular to the centerline and forward annular portion disposed in annular slot extending into inner slot wall. Forward annular portion and annular slot may be cylindrical or conical. Clip may include aft conical portion radially offset from forward conical portion and transition portion therebetween.

Abstract: Gas turbine engine compressor bleed assembly includes annular bleed plenum between annular outer and inner casings circumscribing compressor flowpath of compressor, upstream and downstream bleed ports disposed through inner casing and between compressor flowpath and plenum at upstream and downstream stages. Bleed path extends from downstream bleed port through bleed plenum and out bleed outlet disposed through outer casing. Autonomously actuated valve such as poppet valve disposed in bleed path or downstream bleed port. Autonomously actuated or poppet valve may be set to open at take-off and/or climb. Bleed outlet may be customer and domestic or engine bleed outlet disposed through outer casing and in fluid bleed air communication with bleed plenum. Another assembly may include annular forward and aft bleed outlets connected to plenums. Bleed path extends from downstream bleed port through plenums and out forward bleed outlet.

Abstract: A compressor bleed slot apparatus includes: an annular compressor casing; a stator vane row including a plurality of stator vanes disposed inside the compressor casing; a blade row mounted for rotation about a centerline axis inside the compressor casing, axially downstream of the stator row; a bleed slot passing through the compressor casing, the bleed slot having an inlet and an outlet and extending along a slot axis, wherein the bleed slot is bounded by inboard and outboard walls defined within the compressor casing, the inboard and outboard walls diverging from each other in a downstream direction relative to the bleed slot; and a plurality of turning vanes disposed in the slot, the turning vanes configured to reduce a tangential velocity of airflow through the bleed slot.

Abstract: A compressor bleed slot apparatus includes: an annular compressor casing; a stator vane row disposed inside the compressor casing; a blade row mounted for rotation about a centerline axis inside the compressor casing, axially downstream of the stator row; a bleed slot passing through the compressor casing, wherein the bleed slot is bounded by inboard and outboard walls defined within the compressor casing, the bleed slot having an inlet positioned axially between the stator vane row and the blade row, the bleed slot extending along a slot axis, at least a portion of the bleed slot lying within an axial extent of the blade row; an annular array of struts interconnecting the inboard and outboard walls; and an annular supplemental flange extending radially outward from the compressor casing, wherein at least a portion of the supplemental flange is axially positioned within an axial extent of the bleed slot.

Abstract: Bleed air system includes bleed port with annular bleed slot in a compressor inner casing surrounding flowpath circumscribing a centerline in compressor inner casing. Inner and outer slot walls bound bleed flow passage through the bleed slot. Annular array of arcuate shields radially inwardly bound the bleed flow passage downstream and aft of inner slot wall. Each shield includes integrally-formed axially forward retaining portion, downstream portion, and upstream portion therebetween. Clipping means clips retaining portion to aft facing radial wall of annular lip on inner slot wall. Clipping means may be arcuate or annular clip having forward annular portion attached to annular aft flange substantially perpendicular to the centerline and forward annular portion disposed in annular slot extending into inner slot wall. Forward annular portion and annular slot may be cylindrical or conical. Clip may include aft conical portion radially offset from forward conical portion and transition portion therebetween.

Abstract: Gas turbine engine compressor bleed assembly includes annular bleed plenum between annular outer and inner casings circumscribing compressor flowpath of compressor, upstream and downstream bleed ports disposed through inner casing and between compressor flowpath and plenum at upstream and downstream stages. Bleed path extends from downstream bleed port through bleed plenum and out bleed outlet disposed through outer casing. Autonomously actuated valve such as poppet valve disposed in bleed path or downstream bleed port. Autonomously actuated or poppet valve may be set to open at take-off and/or climb. Bleed outlet may be customer and domestic or engine bleed outlet disposed through outer casing and in fluid bleed air communication with bleed plenum. Another assembly may include annular forward and aft bleed outlets connected to plenums. Bleed path extends from downstream bleed port through plenums and out forward bleed outlet.

Abstract: A key-in-ignition lock reminder system uses a key having a transponder with an identification code. An ignition lock for receiving the key has an adjacent antenna. A door proximity switch connected to the door generates a door open signal when the door is open. A control module is connected to a door lock control, the door proximity switch and a memory storing at least one identification code. The control module energizes the antenna coil which energizes a transponder. The transponder then transmits an identification code which is received by the antenna. The control module generates a control signal if the code from the transponder is equivalent to an identification code stored in the memory and the door proximity switch indicates the door is open. An indicator connected to the control module receives the control signal and generates an indication that the key is in the ignition lock.