Design Calculations for a Halon 1301 Distribution Tube for an Aircraft Cabin Fire Extinguishing System.
Final rept. Jun-Aug 72,
NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J
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Theoretical calculations were performed to aid in the design of a perforated tube that will uniformly distribute Halon 1301 throughout the unventilated passenger cabin of a commercial air transport. Conditions for the calculations were those of a passenger cabin of a DC-7 fuselage, with a volume of 4000 cubic feet and a length of 72 feet, being used as a test article for evaluating the performance of such a system. Four separate calculations were made to determine the 1 size and number of orifices in the tube required for various Halon 1301 discharge rates 2 pressure drop as a function of tube diameter and discharge rates 3 time required to fill the tube with Halon 1301 for various tube diameters and 4 cabin temperature and pressure after completion of Halon 1301 discharge. Author Modified Abstract
- Safety Engineering