THE INTERIOR BALLISTICS MODEL OF THE GRENADE LAUNCHER SYSTEM WITH THE PHENOMENON OF PROPELLANT POWDER BURNING INCOMPLETELY IN HIGH-PRESSURE CHAMBER

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Authors

  • Nguyen Hanh Hoan (Corresponding Author) Institute of Missile/Academy of Military Science and Technology

Keywords:

The interior ballistics; Dynamic weapons; The grenade launchers.

Abstract

   The model of Interior ballistics with high-low pressure chambers is used popularly in the grenade launchers with the assumption: Propellant powder completely burning into gases. However, the reality is there’s a bit of Propellant powder burning incompletely in a high-pressure chamber and flow through one or more nozzles (orifices) in the low-pressure chamber and keep burning. Therefore, the above assumption will lead to calculation errors and must be corrected by matching coefficients. This article proposes a grenade launch system model, which includes the phenomenon of jet-outflow from a high-pressure chamber to a low-pressure chamber is a two-phase flow of gas and incomplete burning particles; these particles continue to burn in the low-pressure chamber. The purpose of the model is to improve the theoretical basis and diversify the approach when solving the Interior ballistics of grenade launchers. Calculation and testing for the system of DP-64 gun and FG-45 ammunition for the incomplete burning coefficient of the Propellant in the high-pressure chamber is 0,22.

References

[1]. Nguyễn Ngọc Du, Đỗ Văn Thọ, "Thuật phóng trong của súng pháo", Đại học Kỹ thuật Quân sự (1976).

[2]. Trần Đăng Điện, Nguyễn Quang Lượng, Trần Văn Doanh, "Bài tập thuật phóng trong", Học viện Kỹ thuật Quân sự (2006).

[3]. Ngô Văn Giao, "Tính chất thuốc phóng và nhiên liệu tên lửa", NXB Quân đội nhân dân (2005).

[4]. Viện Vũ khí, “Hồ sơ đề tài súng và đạn lựu phóng chống người nhái,” (2020).

Published

12-04-2021

How to Cite

Hoàn. “THE INTERIOR BALLISTICS MODEL OF THE GRENADE LAUNCHER SYSTEM WITH THE PHENOMENON OF PROPELLANT POWDER BURNING INCOMPLETELY IN HIGH-PRESSURE CHAMBER”. Journal of Military Science and Technology, no. 72, Apr. 2021, pp. 119-24, https://online.jmst.info/index.php/jmst/article/view/59.

Issue

Section

Research Articles

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