Assemblies and methods for deploying a trailing edge flap of an aircraft
Trailing edge assemblies, couplers and methods for deploying a trailing edge flap of an aircraft wing are disclosed. An exemplary method disclosed herein comprises guiding an aft portion of the trailing edge flap ( 28 ) along an elongated track member ( 36 C) as the trailing edge flap ( 28 ) moves toward the deployed position; guiding a forward portion of the trailing edge flap (28) along the elongated track member ( 36 C) as the trailing edge flap ( 28 ) moves toward the deployed position; and accommodating transverse movement of the forward portion of the trailing edge flap ( 28 ) relative to the elongated track member ( 36 C).
1. A trailing edge flap assembly for a wing of an aircraft, the trailing edge flap assembly comprising:
a trailing edge flap movable between a retracted position and a deployed position;
an elongated track member configured to be fixedly secured to a structure of the wing;
an aft coupler movably coupling an aft portion of the trailing edge flap to the elongated track member, the aft coupler guiding the aft portion of the trailing edge flap along the elongated track member as the trailing edge flap moves toward the deployed position; and
a forward coupler movably coupling a forward portion of the trailing edge flap to the elongated track member, the forward coupler guiding the forward portion of the trailing edge flap along the elongated track member as the trailing edge flap moves toward the deployed position, the forward coupler accommodating transverse movement of the forward portion of the trailing edge flap relative to the elongated track member,
wherein:
the forward coupler comprises a carriage movably coupled to the elongated track member at a first location on the elongated track member;
the aft coupler is movably coupled to the elongated track member at a second location on the elongated track member, the second location being spaced apart from the carriage alarm the elongated track member;
the forward portion of the flap is movably coupled to the carriage by an articulated connection including:
a pivot beam pivotally coupled to the carriage;
a first link pivotally coupled to the pivot beam, the first link being pivotally coupled to a first coupling point on the trailing edge flap; and
a second link pivotally coupled to the pivot beam, the second link being pivotally coupled to a second coupling point on the trailing edge flap, the first coupling point and the second coupling point being disposed on opposite sides of the elongated track member.
2. The assembly as defined in claim 1 , wherein the forward coupler accommodates lateral movement of the forward portion of the trailing edge flap relative to the elongated track member.
3. The assembly as defined in claim 1 , wherein the elongated track member is configured to cause the trailing edge flap to undergo Fowler motion.
4. The assembly as defined in claim 1 , wherein an aft portion of the elongated track member deviates toward an outboard direction relative to the wing.
5. The assembly as defined in claim 1 , wherein at least part of the elongated track member extends generally in a streamwise direction relative to the wing.
6. The assembly as defined in claim 1 , wherein the elongated track member defines an aft track for guiding the aft coupler and a forward track for guiding the forward coupler where the aft track is separate from the forward track.
7. The assembly as defined in claim 1 , wherein the elongated track member is at least partially embedded into the trailing edge flap.
8. The assembly as defined in claim 1 , wherein:
the first link is pivotally coupled to a first end of the pivot beam;
the second link is pivotally coupled to a second end of the pivot beam; and
an intermediate portion of the pivot beam is pivotally coupled to the carriage, the intermediate portion being disposed between the first end and the second end of the pivot beam.
9. The assembly as defined in claim 1 , wherein the trailing edge flap comprises a cut-out for receiving the elongated track member.
10. The assembly as defined in claim 9 , wherein the first coupling point and the second coupling point are disposed on opposite sides of the cut-out.
11. The assembly as defined in claim 1 , wherein the pivot beam is oriented obliquely to the elongated track member.
12. The assembly as defined in claim 1 , wherein the carriage is disposed under the elongated track member.
13. The assembly as defined in claim 1 , wherein the forward coupler accommodates a skewing movement of the trailing edge flap.
14. The assembly as defined in claim 1 , wherein:
the elongated track member is an inboard elongated track member for guiding movement of an inboard portion of the trailing edge flap; and
the assembly comprises an outboard elongated track member configured to be fixedly secured to the structure of the wing for guiding movement of an outboard portion of the trailing edge flap.
15. The assembly as defined in claim 14 , wherein the inboard elongated track member and the outboard elongated track member are configured to cause skewing of the trailing edge flap during deployment of the trailing edge flap.
16. The assembly as defined in claim 1 , wherein the trailing edge flap defines at least part of a swept trailing edge of the wing when the trailing edge flap is in the retracted position.
17. An aircraft comprising the assembly as defined in claim 1 .