World's Smallest Air Raid Siren

What I have built here, out of two tiny pieces of PVC pipe, may very well be the world's smallest air raid siren. It is a 5 port, 5 blade design, with a spinning chopper and mounted stator. The ports are round, and on my next mini siren project I'm going to opt for some square ones. Overall this was an awesomely fun project to build something pretty unusual. I know it's not perfect, but please take it for what it is and comment maturely. Sorry for the length of the video, but please enjoy!