Carbon fiber reinforced polymer cargo beam with integrated cargo stanchions and c-splices
First Claim
1. A cargo beam assembly for an aircraft, the assembly comprising:
- a carbon fiber reinforced polymer (CFRP) cargo beam;
a plurality of CFRP stanchions integrally coupled to the cargo beam;
a first CFRP c-splice plate integrally coupled to a first end of the cargo beam; and
a second CFRP c-splice plate integrally coupled to a second end of the cargo beam;
wherein the CFRP cargo beam, plurality of CFRP stanchions, first CFRP c-splice plate, and second CFRP c-splice plate each comprise two flanges;
wherein the two flanges of the CFRP cargo beam, plurality of CFRP stanchions, first CFRP c-splice plate, and second CFRP c-splice plate each are oriented in a first direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A cargo beam assembly for an aircraft including a carbon fiber reinforced polymer (CFRP) cargo beam and a plurality of CFRP stanchions and CFRP c-splice plates each connected to the CFRP cargo beam by overlapping CFRP plies. The flanges of the cargo beam assembly may all be facing a single direction. The components of the assembly may all be formed with CFRP plies configured in a traditional and non-traditional layup. The CFRP stanchions and CFRP c-splice plates are configured to connect the cargo beam assembly to a keel frame of an aircraft. The upper flange of the CFRP cargo beam may include a pad up above each CFRP stanchion connected to the CFRP cargo beam. The interface between each CFRP stanchion and the CFRP cargo beam may be a flange radius that includes a ramped pad up. Darting may provide load transfer between a CFRP stanchion and the CFRP cargo beam.
21 Citations
20 Claims
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1. A cargo beam assembly for an aircraft, the assembly comprising:
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a carbon fiber reinforced polymer (CFRP) cargo beam; a plurality of CFRP stanchions integrally coupled to the cargo beam; a first CFRP c-splice plate integrally coupled to a first end of the cargo beam; and a second CFRP c-splice plate integrally coupled to a second end of the cargo beam; wherein the CFRP cargo beam, plurality of CFRP stanchions, first CFRP c-splice plate, and second CFRP c-splice plate each comprise two flanges; wherein the two flanges of the CFRP cargo beam, plurality of CFRP stanchions, first CFRP c-splice plate, and second CFRP c-splice plate each are oriented in a first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19)
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11. A method to manufacture a one-piece cargo beam assembly for an aircraft, the method comprising:
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forming a carbon fiber reinforced polymer (CFRP) cargo beam from a first plurality of CFRP plies, the CFRP cargo beam having a first thickness, an upper flange, and a lower flange, the upper flange and the lower flange each being oriented in a first direction; forming a plurality of CFRP stanchions that project from the lower flange of the CFRP cargo beam from a second plurality of CFRP plies each of the plurality of CFRP stanchions having two flanges oriented in the first direction connected to the lower flange of the CFRP cargo beam, the plurality of the CFRP stanchions having a second thickness, the second plurality of CFRP plies of the plurality of CFRP stanchions combining with the first plurality of CFRP plies of the CFRP cargo beam to form an interface having a third thickness greater than the first thickness of the CFRP cargo beam and greater than the second thickness of the plurality of CFRP stanchions; and forming two CFRP c-splice plates from a third plurality of CFRP plies, the third plurality of CFRP plies of each CFRP c-splice plate combining with the first plurality of CFRP plies located at an end of the CFRP cargo beam; wherein a one-piece assembly is formed comprised of the CFRP cargo beam, plurality of CFRP stanchions, and two CFRP c-splice plates. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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20. A cargo beam assembly for an aircraft, the assembly comprising:
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a carbon fiber reinforced polymer (CFRP) cargo beam having a first thickness, an upper flange, and a lower flange, the upper flange having a first thickness; a plurality of CFRP stanchions integrally coupled to the cargo beam, each of the plurality of CFRP stanchions having two flanges that are integrally coupled with the lower flange of the CFRP cargo beam and further comprising a ramp at an interface between the lower flange of the CFRP cargo beam and each of the flanges of the plurality of CFRP stanchions; wherein the upper flange of the CFRP cargo beam has a second thickness in a region above each of the plurality of CFRP stanchions that is greater than the first thickness of the upper flange; wherein the CFRP cargo beam has a second thickness greater than the first thickness where each of the plurality of CFRP stanchions is coupled to the CFRP cargo beam; a first CFRP c-splice plate integrally coupled to a first end of the cargo beam, the first CFRP c-splice plate having a profile; and a second CFRP c-splice plate integrally coupled to a second end of the cargo beam, the second CFRP c-splice plate having a profile; wherein the CFRP cargo beam, plurality of CFRP stanchions, first CFRP c-splice plate, and second CFRP c-splice plate each have the same profile.
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Specification