Cannon Muzzle Blast Noise Suppression Facility
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منابع مشابه
Acoustical analysis of an indoor test facility for aircraft Gatling guns
An indoor test facility for 20-mm and 30-mm aircraft Gatling guns was recently constructed at Hill Air Force Base in Layton, UT. In designing the range, the primary concerns were that the 30-mm gun muzzle blast overpressures were large enough to a) cause significant spallation of the concrete walls during the anticipated 20-year building usage, and b) potentially pose an auditory risk for perso...
متن کاملComparison of muzzle suppression and ear-level hearing protection in firearm use.
OBJECTIVE To compare noise reduction of commercially available ear-level hearing protection (muffs/inserts) to that of firearm muzzle suppressors. SETTING Experimental sound measurements under consistent environmental conditions. SUBJECTS None. STUDY DESIGN AND METHODS Muzzle suppressors for 2 pistol and 2 rifle calibers were tested using the Bruel & Kjaer 2209 sound meter and Bruel & Kja...
متن کاملAxial-Symmetry Numerical Approaches for Noise Predicting and Attenuating of Rifle Shooting with Suppressors
The moving bullet out of a rifle barrel is propelled by a fired explosive charge. Subsequently, a disturbed muzzle blast wave is initiated which lasts several milliseconds. In this study, axially symmetric, unsteady, Large Eddy Simulation LES , and Ffowcs Williams and Hawkins FWH equations were solved by the implicit-time formulation. For the spatial discretization, second order upwind scheme w...
متن کاملTime of Arrival Data Fusion for Source Localization
The paper presents two sensor fusion algorithms that were utilized in a wireless sensor network-based acoustic countersniper system. The technique for fusing muzzle blast Time Of Arrival (TOA) data is able to eliminate multipath effects prevalent in urban environments and to resolve multiple simultaneous acoustic sources. The approach for fusing shockwave TOA data that are generated by superson...
متن کاملVelocity and Density Field Measurements of a Micro- Explosion
This paper describes the implementation of Background oriented Schlieren (BOS) technique to capture the density field of a blast wave generated through a micro-explosion. The three dimensional density field was reconstructed using the filtered back projection technique. This was carried out at several instants of time in order to capture the evolution of the density field. The reconstructed den...
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تاریخ انتشار 2016