Panel assembly including deformable seal
A panel assembly of the kind found in the air intake of a gas turbine engine or a fan duct is designed to be demountable for maintenance purposes. Consequently there exists between the panels a gap to be sealed. Thus, the assembly has a deformable seal for such a purpose and has an elongated, hollow resilient member mounted on a flange at the edge of one of the panels and arranged to be pressed against a flange at the confronting edge of the adjacent panel. The flanges are shaped such that the hollow member when pressed between the flanges effectively seals the gap between the panels and a portion of the seal member lies flush between the panel edges.
1. A panel assembly including a first panel and a second panel mounted relative to the first panel such that there is a gap between adjacent, confronting panel edges, the assembly further comprising a deformable hollow seal member of resilient material extending the length of the gap and positioned between the confronting panel edges to close the gap, each of the confronting panel edges comprising a flange wherein the deformable seal member is mounted on one flange and arranged and adapted to engage the confronting flange which is shaped to squeeze the hollow seal member into the gap to form a substantially smooth profile across the gap between the panel edges, which profile is maintained during lateral panel movements, wherein the panels co-operate to form a circular or cylindrical duct, the first panel forms an air intake and is shaped to form a bell mouth entry to the duct, and the second panel forms an intake duct of a gas turbine engine.
2. A panel assembly including a first panel and a second panel mounted relative to the first panel such that there is a gap between adjacent, confronting panel edges, the first and second panels co-operate to form a circular or cylindrical duct, the first panel is shaped to form a bell mouthed entry to the duct, the first panel forms an air intake and the second panel forms a duct and a fan is mounted for rotation about an axis within the duct, the assembly further comprising a deformable hollow seal member of resilient material extending the length of the gap and positioned between the confronting panel edges to close the gap, each of the confronting panel edges comprising a flange wherein the deformable hollow seal member is mounted on one flange and arranged and adapted to engage the confronting flange which is shaped to squeeze the deformable hollow seal member into the gap to form a substantially smooth profile across the gap between the panel edges, which profile is maintained during lateral panel movements.
3. An assembly as claimed in claim 2 wherein the deformable seal member is mounted on the one flange by means of a rib or tang running along the length of the member engaged with a groove or slot formed in the flange.
4. An assembly as claimed in claim 2 wherein the confronting panel edges are concave and shaped to form a generally elliptical space within which the hollow member is squeezed.
5. An assembly as claimed in claim 2 wherein the deformable seal member comprises an endless seal member having a cross section that has three roughly equal length sides joined by rounded edges.
6. An assembly as claimed in claim 2 wherein the first and second panels are capable of limited relative movement.
7. An assembly as claimed in claim 2 , wherein the air intake and the duct are mounted in a fuselage of a vertical lift aircraft and the fan is mounted for rotation about a vertical axis within the duct.
8. An assembly as claimed in claim 2 , wherein the flanges project radially outwards and extend all around the circumference of the panel edges.
9. An assembly as claimed in claim 2 , wherein the deformable hollow seal member has an uncompressed state and a compressed state, the deformable hollow seal member has an approximately triangular cross section in its uncompressed state and an elliptical cross section in its compressed state.
10. An assembly as claimed in claim 2 , wherein the edges are defined by circles of substantially the same diameter.