Accession Number : AD0785516
Title : The Attainment of Recoilless Rifle Blast Reduction - A SEAS Status Report.
Descriptive Note : Technical rept.,
Corporate Author : WATERVLIET ARSENAL N Y
Personal Author(s) : Andrade,C. A. ; Spring,D. L.
Report Date : JUN 1974
Pagination or Media Count : 55
Abstract : Back blast overpressure measurements from firings of seventy 105mm RR inert rounds have been examined and compared to predictions by point source blast correlations and by time-dependent gas dynamic codes. The effect of porous shroud and parallel plate deflectors is shown for some full-scale tests. That of a sixty-staged, capacitative multinozzle, 1/7 subscale cluster, is shown to significantly reduce back blast. Some detonative properties of the incident blast wave are considered, and a thermochemical analysis is given for a dense (M-8) gas, performed under contract to obtain charged species and OH concentrations. It is concluded that capacitative-dissipative devices may be superior to the purely dissipative type of fluid mechanical blast attenuator, but that propellant and loading considerations play an important role in blast reduction. (Author)
Descriptors : *Recoilless guns, Blast, Overpressure, Suppressors, Breech mechanisms, Flow fields, Gas flow
Subject Categories : Guns
Distribution Statement : APPROVED FOR PUBLIC RELEASE