These fin preforms are used in the tip to tip layup of the Fin Collar to get the correct shape. They add stiffness and appropriate thermal characteristics to the leading edge of the fin.
Sandwich Coupon Schedules:
| Plies | Orientations of Laminate Plies | Core Direction |
|---|---|---|
| 2/felt/core/felt/2 | 45, -45 | ribbon parallel to 0 |
| 3/felt/core/felt/3 | 45, 0, -45 | ribbon parallel to 0 |
| 4/felt/core/felt/4 | 0, 45, -45, 90 | ribbon parallel to 0 |
| 5/felt/core/felt/5 | 0, 45, -45, 0, 90 | ribbon parallel to 0 |
Laminate Coupon Schedules: