Structural Integrity Investigation of Delaminated F-4 Canopies in Support of the Analytical Rework Program.
NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIR VEHICLE TECHNOLOGY DEPT
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Cyclic pressure tests, under various environmental conditions, were run on the F- 4 forward and aft canopies to determine the safe life that could be expected after these canopies had suffered delamination damage of the acrylic sheet. Canopies having edge delaminations were initially tested for 17757 pressure cycles, the equivalent of 7102 hours of flight. This testing resulted in no increase of the original damage. Additional damage was then introduced by cutting 116 inch deep grooves into the canopys surfaces. Further testing at high temperatures produced surface damage. However, no catastrophic failure resulted. Author, modified-PL
- Attack and Fighter Aircraft