Composite aircraft floor system
AssigneeSikorsky Aircraft Corporation
InventorsThomas A. Carstensen, David M. Cournoyer, Dan Ursenbach
Life of this patent
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Abstract
An aircraft floor system includes a composite panel which generally includes an inboard layer, an inboard interlock layer, a core layer, an outboard interlock layer and an outboard layer. The advanced sandwich core material may include K-Cor™ or X-Cor™ which is pinned through at least one ply of dry composite reinforcement to provide a mechanical lock between the pins and an inboard and outboard interlock layer. Bonding of the locked-in ply with the inboard and outboard results in improved structural performance and damage tolerance.
Claims28
A composite panel comprising:
- a core layer have a multiple of pins and a multiple of vertical pins, said multiple of pins each provided within said core layer and extending beyond said core layer, said multiple of vertical pins each provided within said core layer without extending beyond said core layer;
- an inboard interlock layer having at least one ply mechanically interlocked with said multiple of pins;
- an inboard layer bonded to said inboard interlock layer said inboard layer having a first number of plies;
- an outboard interlock layer having at least one ply mechanically interlocked with said multiple of pins;
- and
- an outboard layer bonded to said outboard interlock layer, said outboard layer having a second number of plies of a first type and a second type, said first type different than said second type, said second number of plies greater than said first number of plies.
A composite floor panel comprising:
- a core layer having a multiple of pins which form a truss structure and a multiple of vertical pins which form a reinforcement area, said multiple of pins each provided within said core layer and extending beyond said core layer, said multiple of vertical pins each provided within said core layer without extending beyond said core layer;
- an inboard interlock layer having at least one dry composite reinforcement ply mechanically interlocked with said multiple of pins;
- an inboard layer bonded to said inboard interlock layer, said inboard layer having a first number of plies;
- an outboard interlock layer having at least one dry composite reinforcement ply mechanically interlocked with said multiple of pins;
- and
- an outboard layer bonded to said outboard interlock layer, said outboard layer having a second number of plies of a first type and a second type, said first type different than said second type, said second number of plies greater than said first number of plies.
Dependencies are inferred from the claim text.