Overview
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.
Analysis
Structural Analysis
- will be developing coupons to test for stiffness.
- Use ASTM D7250 and ASTM D7249
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 |