Anechoic chamber fire protection system

A method of suppressing a fire within an anechoic chamber comprising a plurality of pieces of acoustic material mounted to one or more walls defining the chamber, the method comprising:

• (a) detecting within the anechoic chamber one or more conditions indicative of a fire event;(b) activating a flow of a fire suppressing material from a fire suppressing material reservoir located external to the anechoic chamber toward at least one nozzle box,
• the at least one nozzle box comprising wall structure defining a compartment, and an open face that is configured to permit communication between the compartment and the anechoic chamber,
• a nozzle located within the compartment that is fluidly connected to the reservoir, and
• a selectively actuatable pusher assembly, the pusher assembly being shiftable between a retracted position and an extended position, the pusher assembly being operable to dislodge at least one of the plurality of pieces of acoustic material that is mounted in front of the nozzle box open face;
• (c) causing the pusher assembly to shift from the retracted position to the extended position, the shifting dislodging at least one of the plurality of pieces of acoustic material that is mounted in front of the nozzle box open face thereby unblocking the open face of at least one nozzle box;
• and(d) discharging the fire suppressing material through the nozzle into the anechoic chamber.