Survey of acoustic characteristics of bullet shock waves

Snow, William B.

doi:10.1109/tau.1967.1161921

Cited by 16 publications

(4 citation statements)

References 7 publications

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“…Even though fm has been held constant at its x = 10 value in terms of predicting weak shock and linear damping, as well as in the d' calculations, for purposes of predicting the period at maximum amplitude at the ground, use has been made of [DuMond et al, 1946;Snow, 1967;Thompson, 1972] been arbitrarily set equal to 1.5. Note that even though Ap increases with decreasing altitude, the wave energy is still being continuously depleted, because Ap/po is predicted to decrease continuously during the downward propagation of the pulse.…”

Section: Dws(r)•-•t = B/a[ --4'5' Cosmentioning

confidence: 99%

Meteor-Generated Infrasound

Revelle

1975

Science

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Section: Dws(r)•-•t = B/a[ --4'5' Cosmentioning

confidence: 99%

Meteor-Generated Infrasound

Revelle

1975

Science

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“…As the projectile motion slows, the loudness of the sonic crack attenuates until it disappears when the projectile speed is less than the local speed of sound (Snow ; Rasmussen et al . ; Lo & Ferguson ).…”

Section: Introductionmentioning

confidence: 99%

Minimising noise disturbance during ground shooting of pest animals through the use of a muzzle blast suppressor/silencer

Williams

McSorley

Hunt

et al. 2018

Eco Management Restoration

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Summary Lethal control of vertebrate animals through the use of firearms is a component of land management in Australia. The reduction in muzzle blast noise in the area surrounding the shooter provides the opportunity to decrease disturbance of nontargeted animals and nearby humans. This study identifies the reduction in environmental noise footprint provided by suppressor use. This suggests that the use of a suppressor to reduce noise from the muzzle blast may increase operational effectiveness of ground shooting while minimising adverse environmental effects.

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“…(6)과 (7)에서 각 변수는 탄환의 길이 , 탄환의 직경 , 탄도 수직거리 , 마하 수 , 대기압력   , 음파속도 이다. 이러한 Whitham [5] 근사식은 1969년 Snow [6] 에 의해 실험으로 검증되었다. 발생하는 것을 확인할 수 있다.…”

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Prediction of the Environmental Noise Level of Railway Cars Crossing a Concrete Bridge

Jung¹

2015

The Journal of the Acoustical Society of Korea

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ABSTRACT:In this paper, we used the sound of gunshots recorded by multiple microphones to increase the accuracy of the calculation of the distance between sniper and the microphone array. This method is crucial for achieving military objectives. Gunshots are comprised of the explosion of driving gas from the muzzle and the supersonic shock wave from the flying bullet. The original distance calculation method compares the time difference of arrival and angle of incidence to estimate the sniper's location. The disadvantage of this method is that when the angles of incidence coincide the margin of error increases, to solve this problem we suggest a new method using the characteristic changes of the shock wave with the increase of perpendicular distance between the microphone and the trajectory of the bullet. This theory is verified by experiments.

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Survey of acoustic characteristics of bullet shock waves

Cited by 16 publications

References 7 publications

Meteor-Generated Infrasound

Meteor-Generated Infrasound

Minimising noise disturbance during ground shooting of pest animals through the use of a muzzle blast suppressor/silencer

Prediction of the Environmental Noise Level of Railway Cars Crossing a Concrete Bridge

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