- Author
- O'Neill, J. H. | Sommers, D. E. | Nicholas, E. B.
- Title
- Aerospace Vehicle Hazard Protection Test Program: Detectors; Materials; Fuel Vulnerability. October 10, 1970-September 30, 1972. Final Report.
- Coporate
- Federal Aviation Admin., Atlantic City, NJ
- Sponsor
- Air Force Systems Command, Wright-Patterson Air Force Base, OH
- Report
- FAA-NA-73-63; AFAPL-TR-73-87, October 1973, 64 p.
- Contract
- DOF33615-71-M-5002
- Keywords
- aircraft hazards | fire detection systems | fire prevention | jet engine fuels | aircraft safety | smoke generation | fire detectors | JP-4 jet fuel | JP-8 jet fuel | turbojet engines
- Identifiers
- materials flammability
- Abstract
- Fire tests were conducted in a turbojet powerplant installation to determine the effectiveness of an Edison and a Honeywell Ultraviolet Fire Detection System. The four sensor units for each system were installed on the forward bulkhead of the engine nacelle's accessory and compressor compartment (Zone II) and provided surveillance aft to the firewall. Fires having fuel-flow rates of 0.04 and 0.13 gallons per minute were initiated about 12 inches forward of the firewall at several locations around the periphery of the engine. Both systems provided adequate detection of the 0.13 gallon per minute fires, but generally there were limited detection of the small 0.04 gallon per minute fires, depending on the fire location. Both systems provided rapid response time to fires, within the range of 0.2 and 1.0 seconds after the fuel-to-fire was released. In this test installation of the peripheral disposition of the sensor units on the forward bulkhead provided overlapping coverage by most units. A study of flammability and smoke generation characteristics was performed on different types of litter pads and pillows. These items were subjected to the following tests: Horizontal Test Method No. 5906, Vertical Test Method No. 5903, Radiant Panel Test Method, ASTM E-162, and Smoke Measurement Test Method, ASTM STP No. 442. Fire resistance tests in a standard 2000 deg. F. flame-test environment were conducted on two flexible self-sealing low pressure Aeroquip hoses and an aluminized asbestos-faced flexible fiberglas cloth. One hose was coated with an AVCO Corp. intumescent paint identified as Flexible Flame Arrest; the other was uncoated. The hoses were tested while temperature-controlled oil was pumped through the hose. An investigation of the vulnerability of JP-4 and JP-8 fuel, contained in a fuel tank, to ignition by incendiary gunfire was made.