Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Design details of Victory siren which produces sound level of 170 db and has effective covering of 2-mi radius in downtown section of New York; power requirements limit size of siren; corresponding to sound level of 140 db at 100 ft, sound power developed is close to 40 hp.
Design details of Victory siren which produces sound level of 170 db and has effective covering of 2-mi radius in downtown section of New York; power requirements limit size of siren; corresponding to sound level of 140 db at 100 ft, sound power developed is close to 40 hp.
War needs inspire Siren design
Machine Design
Morris, C.H. (Autor:in)
Machine Design ; 14
1942
3 pages
Aufsatz (Zeitschrift)
Englisch
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