CAN YOU EXTINGUISH A BUSH FIRE WITH SOUND WAVES?
It can take up to ten minutes for the fire service to reach the location of an alarm. During that time a flying saucer called Firesound might have already done the hard work – without using any water. The metre-wide hydrogen-powered drone is used to monitor forests. If it comes across a fire that has just broken out, the aircraft emits deep sound waves. These waves create air currents which weaken the small fire. It’s not only the temperature that is reduced – it effectively moves the air just enough to starve a fire of oxygen. Fire departments are now looking at the drone as a potential ‘eye in the sky’ because its thermal cameras can help fire chiefs decide the best place to deploy firefighters during forest fires.