“…21 , 22 , 23 , 24 As an alternative, researchers have been exploring fixed spray systems most recently called solid set canopy delivery systems (SSCDS). 19 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 …”