Experimental studies of the parameters of a positional sprinkler system Mikhail Kostenko, Vladimir Teterin, Dmitry Melnichuk, Sergei Mitrofanov and Alexey Podyablonskiy E3S Web Conf., 273 (2021) 07012 Published online: 22 June 2021 DOI: 10.1051/e3sconf/202127307012