Cowl seal assembly for an aircraft propulsion system
An assembly for an aircraft propulsion system includes an upstream cowl and a downstream cowl. The upstream cowl extends axially from a first upstream end to a first downstream end. The upstream cowl includes an inner barrel panel, an outer barrel panel, and a bulkhead. The bulkhead extends radially between and connects the inner barrel panel and the outer barrel panel at the first downstream end. The downstream cowl extends axially from a second upstream end to a second downstream end. The downstream cowl includes a cowl panel and a seal assembly. The seal assembly includes a seal frame and a seal member. The seal frame is mounted to the bulkhead. The seal member is mounted to the cowl panel. The seal member includes a first radial portion projecting away from the cowl panel. The first radial portion is located at the second upstream end.
1. An assembly for an aircraft propulsion system having an axial centerline, the assembly comprising:
an upstream cowl extending circumferentially about the axial centerline, the upstream cowl further extending axially from a first upstream end to a first downstream end, the upstream cowl including an inner barrel panel, an outer barrel panel, and a bulkhead, the bulkhead extending radially between and connecting the inner barrel panel and the outer barrel panel at the first downstream end; and
a downstream cowl extending circumferentially about the axial centerline, the downstream cowl further extending axially from a second upstream end to a second downstream end, the second upstream end positioned axially adjacent the first downstream end, the downstream cowl including a cowl panel and a seal assembly, the cowl panel being movable between an open position and a closed position, the seal assembly including a seal frame and a seal member, the seal frame including an oblique portion and a seal frame axial portion, the seal frame mounted to the bulkhead radially inward of the cowl panel, the seal member mounted to the cowl panel, the seal member including a seal member radial portion projecting away from the cowl panel to a distal end of the seal member radial portion, the seal member radial portion located at the second upstream end, and the oblique portion located axially between the bulkhead and the seal frame axial portion, the oblique portion axially aligned with the seal member radial portion;
wherein, with the cowl panel in the closed position, the distal end is radially spaced outward of the oblique portion.
2. The assembly of claim 1 , wherein the seal frame further includes a seal frame radial portion, the seal frame radial portion mounted to the bulkhead.
3. The assembly of claim 1 , wherein the seal member further includes a seal member axial portion mounted to the cowl panel, the seal member radial portion projecting away from the seal member axial portion.
4. The assembly of claim 3 , wherein the seal member axial portion is located axially aft of the seal member radial portion.
5. The assembly of claim 4 , wherein:
the seal assembly further includes a rub strip; and
with the cowl panel in the closed position, the rub strip is located between and configured to contact the seal member axial portion and the seal frame axial portion.
6. The assembly of claim 1 , wherein the cowl panel comprises a first material and the seal member comprises a second material, the second material different than the first material.
7. The assembly of claim 1 , wherein the seal member radial portion is axially spaced from the bulkhead.
8. An aircraft propulsion system comprising:
a fan rotatable about a rotational axis; and
an enclosure extending circumferentially about the rotational axis, the enclosure radially circumscribing the fan, the enclosure including:
an intake cowl forming a propulsion system inlet upstream of the fan, the intake cowl extending axially from a first upstream end to a first downstream end, the intake cowl including an inner barrel panel, an outer barrel panel, and a bulkhead, the bulkhead extending radially between and connecting the inner barrel panel and the outer barrel panel at the first downstream end; and
a fan cowl extending axially from a second upstream end to a second downstream end, the second upstream end positioned axially adjacent the first downstream end, the fan cowl including a cowl panel and a seal assembly, the cowl panel being movable between an open position and a closed position, the seal assembly including a seal frame and a seal member, the seal member including a seal member axial portion and a seal member radial portion, the seal member radial portion projecting away from the cowl panel to a distal end of the seal member radial portion, the seal member radial portion located at the second upstream end, the seal frame including an oblique portion and a seal frame axial portion, the seal frame mounted to the bulkhead radially inward of the seal member, the oblique portion located axially between the bulkhead and the seal frame axial portion, and the oblique portion axially aligned with the seal member radial portion;
wherein, with the cowl panel in the closed position, the distal end is radially spaced outward of the oblique portion.
9. The aircraft propulsion system of claim 8 , wherein the cowl panel comprises a first material and the seal member comprises a second material, the second material different than the first material.
10. The aircraft propulsion system of claim 8 , wherein:
the seal assembly further includes a rub strip; and
with the cowl panel in the closed position, the rub strip is located between and configured to contact the seal member axial portion and the seal frame axial portion.
11. An assembly for an aircraft propulsion system having an axial centerline, the assembly comprising:
an upstream cowl extending circumferentially about the axial centerline, the upstream cowl further extending axially from a first upstream end to a first downstream end, the upstream cowl including a bulkhead extending radially along the first downstream end; and
a downstream cowl extending circumferentially about the axial centerline, the downstream cowl further extending axially from a second upstream end to a second downstream end, the second upstream end positioned axially adjacent the first downstream end, the downstream cowl including a cowl panel and a seal assembly, the seal assembly including a seal frame, a rub strip and a seal member, the seal member mounted to the cowl panel, the seal member including a seal member radial portion projecting away from the cowl panel to a distal end of the seal member radial portion, the seal member further including a seal member axial portion mounted to the cowl panel, the seal frame mounted to the bulkhead, the seal frame including an oblique portion and a seal frame axial portion located axially aft of the oblique portion, the seal member radial portion located axially between and spaced from the bulkhead and the oblique portion, the seal member radial portion projecting away from the seal member axial portion, and the rub strip located between and configured to contact the seal member axial portion and the seal frame axial portion.
12. The assembly of claim 11 , wherein the seal frame further includes a seal frame radial portion, the seal frame radial portion mounted to the bulkhead.
13. The assembly of claim 11 , wherein the cowl panel comprises a first material and the seal member comprises a second material, the second material different than the first material.
14. The assembly of claim 11 , wherein the distal end is radially spaced outward of the oblique portion.