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Initial foam impact test on RCC Panel 6 conducted on Friday, June 6

RCC Panel 6 Foam Impact Test Results (Preliminary). Initial foam impact test on RCC Panel 6 conducted on Friday, June 6 Large foam block, ~21 3/8” x 11 9/16” x 5 5/8”, weighing ~1.68 pounds impacted Panel 6 at 768 feet per second Some damage resulted. Damage/Crack Location.

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Initial foam impact test on RCC Panel 6 conducted on Friday, June 6

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  1. RCC Panel 6 Foam Impact Test Results(Preliminary) • Initial foam impact test on RCC Panel 6 conducted on Friday, June 6 • Large foam block, ~21 3/8” x 11 9/16” x 5 5/8”, weighing ~1.68 pounds impacted Panel 6 at 768 feet per second • Some damage resulted Damage/Crack Location The CAIB has drawn no conclusions from this test

  2. 5 1/2” long through-thickness crack • Located on the lock side approximately 6” below the stagnation line (apex) • Transverses the entire rib width, extends through the lock side channel and onto the panel lower face • Approximately 3/4” crack on the lower face • Projectile ink streaks start on RCC panel 6, continue across T-Seal 6 and onto the fiberglass panel 7. • Foam debris was caught between RCC panel 6 and T-Seal 6. RCC Panel 6 Impact Test Results The CAIB has drawn no conclusions from this test

  3. RCC Panel 6 Impact Test Results • Visible crack in panel rib, ~ 5” in length emanating from the surface; crack also found in adjacent T-Seal • Visible as a 3/4” surface crack, ~4” below the apex of the panel • Easily detectable with routine inspection techniques • Panel 6 has been removed and will be inspected using a variety of inspection techniques to further characterize the crack The CAIB has drawn no conclusions from this test

  4. RCC Panel 6 Impact Test Results • Through crack on the RCC Panel 6 lower outboard rib • Photos taken after Panel 6 was removed from the test fixture show the crack extends across the rib, lock and onto the panel surface Damage/Crack Location The CAIB has drawn no conclusions from this test

  5. T-Seal Crack Adjacent to Panel 6 Rib Crack • The T-Seal crack is approximately 6” below the stagnation (near the panel crack) • Approximately 2 1/2” through crack on the RCC T-Seal 6 lower outboard rib • Crack starts at rib and continues into filets Damage/Crack Location T-Seal Crack Not Visible The CAIB has drawn no conclusions from this test

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