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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.
Link to Piper's notes on Sandwich Panels and Fin Pre-Forms. This will be her working document because it allows for easier collaboration than the wiki.
Analysis
Structural Analysis
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Laminate Coupon Schedules:
| Plies | Orientation of Plies |
|---|---|
| 12 | 0, 45, -45, 90 |
| 16 | 0, 45, -45, 90 |
| 20 | 0, 45, -45, 90 |
| 24 | 0, 45, -45, 90 |