• Title/Summary/Keyword: 사격소음

Search Result 34, Processing Time 0.037 seconds

Experimental Analysis about Influence Parameters at the Propagation of Large Arm’s Firing Noise (대구경 사격소음 전달 영향인자에 대한 실험적 분석)

  • Kim, Eung-Su
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.26 no.4
    • /
    • pp.412-419
    • /
    • 2016

  • The firing noise produced at artillery test range or military training ground is impulsive burst noise which energy is generated within tens of milliseconds and distributed an isolated burst of sound energy separated to one by one noise. The long range propagation of this noise is affected by a caliber of gun, amount of propellant, distance between source and receiver, ground and meteorological condition. In this paper, main influence parameters have been described based on experimental analysis of measured data. It is considered that this analysis result can be used as useful materials for study of effective firing noise management and development of propagation model.

  • https://doi.org/10.5050/KSNVE.2016.26.4.412 인용 PDF KSCI KPUBS HTML

Analysis of Acoustic Characteristics and Shooting Noise Prediction for Shooting Range Soundproofing in Military (군부대 방음사격장의 음향특성 분석 및 사격소음 예측)

  • Jeong, A-Yeong;Kim, Jae-Soo
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.24 no.11
    • /
    • pp.833-839
    • /
    • 2014

  • The shooting noise caused by shooting training, which has strength and impacts, is becoming a serious damage to the residents around the shooting range and, consequently, the number of civil appeals against the shooting noise is on the constant increase. For this reason, the military examines the effects of the shooting noise at the stage of design in constructing a shooting range and tries to build a soundproof shooting range to minimize civil appeals. However, the lack of research and data concerning propagation and attenuation, both of which characterize the shooting noise from within a soundproof shooting range, even makes it so difficult to design a soundproof shooting range in constructing it. So this study used an acoustic simulation in a soundproof shooting range to identify acoustic and propagation characteristics within the shooting range and, on this basis, predicted the noise level at an exit of the soundproof shooting range. As a result, if the form and specifications of a soundproof shooting range were decided on at the stage of design, it was possible to use a simulation to design a soundproof shooting range with optimized acoustic performance and, on this basis, to predict a sound pressure level at an exit of the soundproof shooting range. On the basis of these data, it is probably possible to determine the degree of the effects of the shooting noise on the villages around a shooting range and the extent of damage to it and to minimize civil appeals against the shooting noise and resolve the issues of compensation and agreement with ease. This study is expected to provide useful data for designing and constructing a similar soundproof shooting range.

  • https://doi.org/10.5050/KSNVE.2014.24.11.833 인용 PDF KSCI KPUBS HTML

Installation of Sound Barrier to Prevent Damage to Structures Caused by Artillery Fire Impact Sound (포 사격 충격음의 구조물 손상 방지를 위한 방음벽 설치 방안)

  • Park, June;Ha, Yonghoon
    • Journal of the Korea Society for Simulation
    • /
    • v.30 no.3
    • /
    • pp.31-39
    • /
    • 2021

  • During artillery fire, an excessive level of impulse noise propagating in the form of a storm wave is generated. Since the sound of impact from the fire affects the stability of the surrounding structures, the artillery and the structures must be separated from each other by the proper distance to avoid damages from friendly fire. However, if they have already been built within the distance, it is possible to prevent the damages by building sound barriers between them. In this study, the proper separation distance between the artillery and the structure was calculated, and the insertion losses due to various heights and shapes of the sound barrier were simulated by using the BEM(Boundary Element Method), and conclusively the optimal sound barrier was selected.

  • https://doi.org/10.9709/JKSS.2021.30.3.031 인용 PDF KSCI

Measurement of Noise and Evaluation of Noise Control Methods for Military Rifle Shooting Ranges (군 소화기 사격장 소음측정 및 소음저감 방안 평가)

  • Lee, Sang-Woo;Kim, Hee-Seok;Jeong, Sang-Jo
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.12 no.1
    • /
    • pp.123-132
    • /
    • 2009

  • Civil petitions and law suits against the military rifle shooting noise have been increased because many military shooting ranges are located near civilian residential area. In order to solve the noise problems, military have devised various methods. In this study, propagation properties of rifle shot through atmosphere were investigated. The military rifle shooting noise level at 5m from muzzle was between $l14{\sim}120dB$ in all directions. The noise level loom both backward and sideward away from system firing range consisting lines of 8 shooting locations were 90dB, when shots were all fired within 10 seconds. At present some of military bases established sound barriers, muzzle enclosures, silencers, and indoor shooting ranges to reduce noises and these prevention methods can reduce noise by $5{\sim}20dB,\;5{\sim}9dB,\;5{\sim}13dB,\;40{\sim}50dB$, respectively. Even though indoor shooting range has the best performance, it requires very expensive construction cost and has short length between target and shooter. In comparison, muzzle enclosure is cheap, but because it is installed in fixed position it can only be used in one shooting position. Therefore a commander should select appropriate methods to reduce military rifle shooting noise considering distance from residential area to the range, mission of military training, budget, etc.

  • PDF KSCI