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Vol.2, No.2, 2023: pp.41-48

STUDY ON METHOD TO DETERMINE THE LIFE OF TESTING GUN THAT FIRES 7.62x25mm AMMUNITION

Authors:

Nguyen Minh Phu1
, Vo Van Bien1
, Nguyen Van Hung1
1The Faculty of Special Equipments, Le Quy Don Technical University, Hanoi City, 100000, Vietnam

Received: 6 March 2023
Revised: 7 June 2023
Accepted: 19 June 2023
Published: 30 June 2023

Abstract:

The article presents a method to determine the life of a testing gun that fires 7.62x25mm ammunition. The scientific basis for determining the life of the test barrel is based on the wear of the rifling lands corresponding to the number of shots. The wear of the barrel is determined by the thermal and mechanical effects of the bullet’s driving band on the lands and the grooves. The results show that: With the number of fires being 1000, 2000, 3000, 4000, 5000, and 6000 respectively, the barrel wear is 0.334mm, 0.668mm, 1.002mm, 1.337mm, 1.671mm, 2.005mm, and the muzzle velocity is reduced respectively by 1.15%, 2.06%, 2.98%, 3.67%, 4.36%, 5.28%. The accuracy of the 7.62x25mm ammunition test results is reduced due to this change. In addition, to ensure the accuracy of the measurements, the barrel needs to be replaced when the number of shots is more than 5000 shots. The paper is an important theoretical basis for determining the gun life used to test infantry ammunition.

Keywords:

Testing gun, barrel wear, muzzle velocity, infantry gun, 7.62x25mm ammunition

References:

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© 2023 by the authors. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 3
Number 1
March 2024.

 

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How to Cite

N.M. Phu, V.V. Bien,  N.V. Hung, Study on Method to Determine the Life of Testing Gun That Fires 7.62x25mm Ammunition. Advanced Engineering Letters, 2(2), 2023: 41–48. 
https://doi.org/10.46793/adeletters.2023.2.2.1

More Citation Formats

Phu, N. M., Bien, V. V., & Hung, N. V. (2023). Study on Method to Determine the Life of Testing Gun That Fires 7.62x25mm Ammunition. Advanced Engineering Letters, 2(2), 41–48.  https://doi.org/10.46793/adeletters.2023.2.2.1

Phu, Nguyen Minh, et al. “Study on Method to Determine the Life of Testing Gun That Fires 7.62x25mm Ammunition.” Advanced Engineering Letters, vol. 2, no. 2, 2023, pp. 41–48, https://doi.org/10.46793/adeletters.2023.2.2.1.

Phu, Nguyen Minh, Vo Van Bien, and Nguyen Van Hung. 2023. “Study on Method to Determine the Life of Testing Gun That Fires 7.62x25mm Ammunition.” Advanced Engineering Letters 2 (2): 41–48. https://doi.org/10.46793/adeletters.2023.2.2.1.

Phu, N. M., Bien, V. V., and Hung, N. V. (2023). Study on Method to Determine the Life of Testing Gun That Fires 7.62x25mm Ammunition.” Advanced Engineering Letters, 2(2), pp.41–48. doi: 10.46793/adeletters.2023.2.2.1.