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    Mark Drela Free online aero course

    The link: About this Course This...
  2. R

    Problem: Hole in composite structure

    Below is a picture of the FS-22 bulkhead on an E-racer project I am restoring. The left hole contains a bushing that bolts to the canard lift tab. The right hole is about 3/8" dia. The area is reinforced with 12 layers of fiberglass on the back and 6 layers on the front of the bulkhead in the...