FIRE-RESISTANCE STUDY AND PRELIMINARY EVALUATION OF THE FIRE-DETECTION AND EXTINGUISHING SYSTEMS OF THE LOCKHEED HERCULES (AF C-130A) AIRPLANE POWER PLANT

摘要

Tests were conducted on a Lockheed C-130A power plant and adjacent wing section primarily to obtain information as to the fire resistance of all associated equipment and structural components when subjected to an uncontrolled fire during simulated cruise flight conditions. In addition, a preliminary evaluation of the aircraft's fire-detector and extinguishing systems was undertaken to determine their effectiveness underground and flight operating conditions.nAn uncontrolled fire in Zone 2 of the C-130A power plant resulted in considerable damage to the nacelle and equipment and structural components in this area. Flames did not penetrate the firewall and fire damage to Zones 1 and 3 were slight. Flames penetrating the nacelle skin did not impinge on the wing surface. The aircraft's fire detector system provided rapid detection of test fires originated in Zone 2 underground and simulated flight conditions. The extinguishing system tests were too limited to draw definite conclusions. However, four fires originating in Zone 2, two each under simulated ground and flight operating conditions, were successfully extinguished.