Acoustic Flame Suppression in Various Gravitational Forces

The ability to detect and suppress flames on Earth gravity, microgravity, and Mars gravity is crucial for preventing fire during space missions. Payload limitations for mission assets create the necessity for resourceful fire response technology. Furthermore, gravity affects the heat release rate, pollutant formation, and extinguishment of flames. Unlike pressure vessel fire extinguishers, low-frequency acoustic waves are not affected by gravity and can extinguish a flame without increasing a payload. An Acoustic Flame Suppression System (AFSS) composed of a subwoofer, focal lens, and a thermal camera can extinguish fire regardless of gravity. The system components may be attached to autonomous swarm rovers called Swarmies or mounted onto walls depending on the task. The purpose of this paper is to assess the development feasibility of an autonomous AFSS for flame suppression under various gravitational force conditions. The most appropriate way in developing an effective system is by studying previous acoustic flame suppression experiments and incorporating applicable elements.