Seal, aircraft including the seal, and methods therefor
A seal for sealing a space between a first structure and second structure. The seal includes a seal base configured to couple with the first structure so as to form a respective seal with the first structure, a resilient lattice body coupled to the seal base, and a cover. The cover includes an inner surface coupled to the resilient lattice body in an opposing relationship relative to the seal base so that the cover moves towards and away from the seal base in a biasing direction of the resilient lattice body, and a bulbous outer surface configured to engage the second structure so as to form a respective seal with the second structure.
1. A seal for sealing a space between a first structure and second structure, the seal comprising:
a seal base configured to couple with the first structure so as to form a respective seal with the first structure;
a resilient lattice body coupled to the seal base; and
a cover comprising
an inner surface coupled to the resilient lattice body in an opposing relationship relative to the seal base so that the cover moves towards and away from the seal base in a biasing direction of the resilient lattice body, and
a bulbous outer surface configured to engage the second structure so as to form a respective seal with the second structure.
2. The seal of claim 1 , wherein the bulbous outer surface has a contour that is configured to substantially prevent a dragging movement of the cover as the second structure moves relative to the first structure in a swiping motion transverse to the biasing direction.
3. The seal of claim 1 , wherein:
the resilient lattice body comprises lateral sides;
the seal base comprises base sides that extend along the lateral sides; and
the cover comprises cover sides that extend along the lateral sides so that movement of the cover in the biasing direction is guided by the base sides and lateral sides.
4. The seal of claim 1 , wherein movement of the cover in the biasing direction is an unguided movement.
5. The seal of claim 1 , wherein:
the seal base comprises a guiding protrusion that extends at least partially through the resilient lattice body towards the cover; and
the inner surface of the cover comprises a mating guiding protrusion that extends at least partially through the resilient lattice body towards the seal base, the mating guiding protrusion being configured to mate with the guiding protrusion so as to guide movement of the cover in the biasing direction.
6. The seal of claim 1 , wherein the bulbous outer surface of the cover comprises rollers configured to movably engage the second structure, the cover being additively manufactured with the rollers so that the rollers are captured by the cover by additively manufactured axles of the cover, each axle extending through a respective roller.
7. The seal of claim 1 , wherein the bulbous outer surface comprises a wiper blade extending from the bulbous outer surface, the wiper blade being configured to engage the second structure so as to form a seal with the second structure.
8. The seal of claim 1 , wherein the seal base, the resilient lattice body, and the cover are additively manufactured as a monolithic structure.
9. The seal of claim 1 , wherein the seal has a longitudinally elongated configuration having a first end and a second end, the first end having a lateral width that is less than another lateral width of the second end so as to form a wedge shaped seal.
10. The seal of claim 9 , wherein the second end comprises seal extensions that extend from the second end so as to diverge from one another.
11. The seal of claim 1 , wherein the seal base, the resilient lattice body, and the cover comprise one or more of a metal, a polymer, and an elastomer.
12. An aircraft comprising:
a wing;
a control surface coupled to the wing so as to move relative to the wing; and
a seal disposed between the wing and the control surface so as to aerodynamically seal a space between the wing and the control surface, the seal comprising
a seal base configured to couple with one of the wing and the control surface so as to form a respective seal with the one of the wing and the control surface,
a resilient lattice body coupled to the seal base, and
a cover comprising
an inner surface coupled to the resilient lattice body in an opposing relationship relative to the seal base so that the cover moves towards and away from the seal base in a biasing direction of the resilient lattice body, and
a bulbous outer surface configured to engage another of the wing and the control surface so as to form a respective seal with the other of the wing and the control surface.
13. The aircraft of claim 12 , wherein the wing comprises a main wing of the aircraft and the control surface comprises one or more of a slat, an aileron, a spoiler, a flap, and a flaperon.
14. The aircraft of claim 12 , wherein the wing comprises a horizontal stabilizer of the aircraft and the control surface comprises an elevator.
15. The aircraft of claim 12 , wherein wing comprises a vertical stabilizer of the aircraft and the control surface comprises a rudder.
16. A method of forming a seal, the method comprising:
additively manufacturing a seal base that is configured to couple with a first structure so as to form a respective seal with the first structure;
additively manufacturing a resilient lattice body onto the seal base; and
additively manufacturing a cover onto the resilient lattice body where the cover comprises
an inner surface coupled to the resilient lattice body in an opposing relationship relative to the seal base so that the cover moves towards and away from the seal base in a biasing direction of the resilient lattice body, and
a bulbous outer surface configured to engage a second structure disposed adjacent the first structure so as to form a respective seal with the second structure, and so that a space that exists between the first structure and the second structure is sealed by the seal.
17. The method of claim 16 , further comprising:
additively manufacturing a guiding protrusion on the seal base so that the guiding protrusion extends at least partially through the resilient lattice body towards the cover; and
additively manufacturing a mating guiding protrusion on the inner surface of the cover so that the mating guiding protrusion extends at least partially through the resilient lattice body towards the seal base, the mating guiding protrusion being configured to mate with the guiding protrusion so as to guide movement of the cover in the biasing direction.
18. The method of claim 16 , further comprising additively manufacturing the cover with rollers so that the rollers are captured by the cover by additively manufactured axles of the cover, each axle extending through a respective roller.
19. The method of claim 16 , wherein the seal base, the resilient lattice body, and the cover are additively manufactured as a monolithic structure.
20. The method of claim 16 , wherein the seal base, the resilient lattice body, and the cover comprise one or more of a metal, a polymer, and an elastomer.