Fuel Tank Ullage Vapor Analyzer

Period of Performance: 01/01/1987 - 12/31/1987

$230K

Phase 2 SBIR

Recipient Firm

Brown J Assoc., Inc.
Po Box 145
Berkeley Heights, NJ 07922
Principal Investigator

Abstract

THE VAPOR SPACE INSIDE AN AIRCRAFT FUEL TANK IS OR IS NOT FLAMMABLE (OR EXPLOSIVE) DEPENDING UPON THE PERCENTAGE OF FUEL VAPOR AND OF OXYGEN AND OF INERT GAS SUCH AS NITROGEN OR HALOCARBON FIRE SUPPRESSANTS. IT IS IMPORTANT TO KNOW THESE PERCENTAGES WHEN TESTING THE EFFICACY OF EXPERIMENTAL INERTING MEASURES BY FIRING LIVE ROUNDS AT TEST TANKS; BUT THERE HAS BEEN NO FAST, CONVENIENT, FIELD METHOD OF MEASURING THE PERCENTAGES HERETOFORE. PHASE I DEMONSTRATED THE FEASIBILITY OF ANALYZING FOR FUEL VAPOR, OXYGEN, NITROGEN AND HALON BY A DEDICATED GAS CHROMATOGRAPH WITH A TIME LAG OF ONLY ONE TO THREE MINUTES, WHICH IS ESSENTIALLY REAL TIME. PHASE II OFFERS TO ENGINEER, FABRICATE AND INSTALL A PERMANENT AUTOMATED ULLAGE CHROMATOGRAPH AT THE AFWAL AIRCRAFT SURVIVABILITY RESEARCH FACILITY. CONTROL ROOM READOUT IS TO INCLUDE A STRIPCHART CHROMATOGRAM, AN ALPHANUMERIC COMPOSITION SUMMARY AND A REAL-TIME PLOT ON A FLAMMABILITY DIAGRAM.