FIRE AND EXPLOSION HAZARDS OF FLIGHT VEHICLE COMBUSTIBLES.
Quarterly progress rept. for 1 Jun-31 Aug 65,
BUREAU OF MINES PITTSBURGH PA
Pagination or Media Count:
The study was initiated to determine the ignition and flammability characteristics of titanium and its alloys in air and with various halogenated hydrocarbon fire extinguishing agents. The following fire extinguishing materials are included bromochloromethan - CH2BrC1, dibromodifluoromethane - CBr2F2, bromotrifluoromethane - CBrF3, 1,1,1,-trifluorobromochloroethane - CF3CHBrC1, 1,2,2-trifluoropentachloropropane - CC13CF2CFC12. Various halogenated hydrocarbon materials are known to be effective as fire extinguishing agents and are employed in current aircraft fire protection systems. The utilization of similar type agents is being considered for fire protection in advanced flight vehicles which make extensive use of titanium and its alloys. During the present report period, a literature search was conducted, necessary materials were acquired for the initial experimental work, and test apparatuses were assembled and calibrated. In addition, ignition temperature type experiments were initiated with the fire extinguishing materials vapors in contact with heated titanium metal in air, nitrogen, and argon atmospheres. For convenience, the present experimental work is divided into two phases 1 Autoignition experiments in heated vessels. 2 Experiments with electrically heated wires. Author