Category:Pnuematic Sirens
Revision as of 23:47, 3 May 2019 by Duderocks5539 (talk | contribs)
A Pneumatic siren is a siren that is similar to an electromechanical siren ,except it has a rotor that has no vanes ,requiring an external air source to feed air to the chopper in order to be loud. The rotor can either be a disc with four slots ,or a cylinder rotor like an electromechanical siren that has no vanes.
Pages in category "Pnuematic Sirens"
The following 5 pages are in this category, out of 5 total.