Composite wing structure and methods of manufacture
In one aspect, there is a method of making a pre-cured laminate having a total number of plies in a mold, the mold having a periphery defined by a forward edge, an aft edge, and outboard ends. The method includes selecting a first plurality of resin impregnated plies that continuously extend beyond the periphery of the mold, the first plurality of resin impregnated plies includes at least 50 percent of the total number of plies; laying the plies in a mold; compacting the plies in a mold; and pre-curing the plies to form a pre-cured laminate, which can extend beyond the periphery of the mold. In an embodiment, a pre-cured laminate includes a first plurality of resin impregnated plies that continuously extend beyond the periphery of the mold, the first plurality of resin impregnated plies includes at least 50 percent of the total number of plies.
1. A method of making a pre-cured laminate having a total number of plies in a mold, the mold having a cavity with a periphery defined by a forward edge, an aft edge, and outboard ends, comprising:
selecting a first plurality of resin impregnated plies configured to continuously extend beyond the periphery of the cavity, the first plurality of resin impregnated plies comprises at least 50 percent of the total number of plies;
selecting a second plurality of resin impregnated plies that do not extend beyond the forward edge and continuously extend beyond the aft edge;
laying the first plurality of resin impregnated plies in the cavity to form a portion of the total number of plies;
laying the second plurality of resin impregnated plies in the cavity to form a portion of the total number of plies;
compacting the total number of plies in the cavity; and
pre-curing the total number of plies to form a pre-cured laminate;
wherein the pre-cured laminate extends beyond the periphery of the cavity.
2. The method of claim 1 , wherein the first plurality of resin impregnated plies comprises from about 50 percent to about 90 percent of the total number of plies.
3. The method of claim 1 , wherein the second plurality of resin impregnated plies comprises from about 15 percent to about 25 percent of the total number of plies.
4. The method of claim 1 , further comprising:
selecting a third plurality of resin impregnated plies that do not extend beyond the aft edge and continuously extend beyond the forward edge; and
laying the third plurality of resin impregnated plies in the cavity to form a portion of the total number of plies.
5. The method of claim 4 , wherein the third plurality of resin impregnated plies comprises from about 15 percent to about 25 percent of the total number of plies.
6. The method of claim 4 , wherein a portion of the third plurality of plies do not extend beyond the outboard ends.
7. The method of claim 4 , further comprising:
selecting a fourth plurality of resin impregnated plies that do not extend beyond the outboard ends and continuously extend beyond the forward and aft edges; and
laying the fourth plurality of resin impregnated plies in the cavity to form a portion of the total number of plies.
8. The method of claim 7 , wherein the fourth plurality of resin impregnated plies comprise from about 5 percent to about 50 percent of the total number of plies.
9. The method of claim 1 , further comprising:
trimming the pre-cured laminate to reduce the pre-cured laminate to the periphery of the cavity.
10. The method of claim 1 , wherein the total number of plies is from about 8 plies to about 100 plies.
11. The method of claim 1 , wherein the resin impregnated plies are made from a fiber selected from the group consisting of glass, carbon, graphite, basalt, and aramid.
12. The method of claim 1 , wherein the resin impregnated plies comprise at least one of a woven fabric and a tape.