Experimental Investigation of Fire Monitors and Nozzles

Since the inefficiency of fire streams is directly attributable to the initial turbulence of the free jet, attention was given at the Iowa Institute of Hydraulic Research fo the design of a fixed monitor, a portable monitor, and a nozzle that will reduce the turbulence of the flow to a practicable minimum. The underlying principles upon which the designs were based are discussed in this paper, the test facilities are described, the efficiencies of existing and improved units are compared, and design details and performance curves are presented for the recommended forms.