FIREPROOF AND FIRE RESISTANT MATERIALS Federal Aviation Administration Project Manager: J. Reinhardt William J. Hughes Technical Center Airport and Aircraft Safety Research and Development Division Atlantic City International Airport, NJ
PURPOSE An ARAC Subcommittee is looking at revising AC (Powerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards, and Criteria) Develop a means to comply with the AC in order to evaluate various test specimens to determine whether they may be classified as: –Fireproof –Fire Resistant Determine the feasibility of the testing methods performed.
Current Proposed Procedure CALIBRATION OF THERMOCOUPLES Preheat Burner for 2 minutes. Place Flame on Thermocouples for 90 seconds. All Thermocouples must read 2000°F +/- 150°F.
Current Proposed Procedure CALIBRATION OF CALORIMETERS Preheat Burner for 2 minutes. Place Flame on Calorimeters for 90 seconds. All Calorimeters must read above 10 BTU/(ft²·sec ).
Current Proposed Procedure BURNER TEST Preheat Flame for 2 minutes. Place Flame for 16 minutes on the various test specimens: 4140 Steel (reference material) PH Steel 2.Titanium 6A1-4V 3.Inconel Aluminum 7075 Record time temperature data at the 0%, 25%, 50%, 75%, and 100% positions of the diameter. Determine the loss of Ultimate Strength at the 5 minute and 15 minute intervals.
Status TESTING Three out of the five material selected have been tested according to the prescribed procedure (4130 Steel, 15-5 PH Steel, and Titanium 6A1-4V). Available test data is currently been analyzed (reference material) PROCEDURE ARAC Subgroup is currently looking at the data to determine if a test protocol change is required.