Safety Characteristics of a Certain Ternary Al/AP/HTPB Propellant under Bullet Impact

TANG Yingrui; HAN Yong; GUO Bin; HE Na; ZOU Yu

doi:10.19554/j.cnki.1001-3563.2026.09.011

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (9) : 107-117. DOI: 10.19554/j.cnki.1001-3563.2026.09.011

Special Topic on Ammunition Response and Protection Technology under Intensive Dynamic Loading

Safety Characteristics of a Certain Ternary Al/AP/HTPB Propellant under Bullet Impact

TANG Yingrui¹, HAN Yong^2,*, GUO Bin², HE Na³, ZOU Yu²

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Abstract

The work aims to investigate the velocity threshold for combustion response of a ternary Al/AP/HTPB propellant under bullet impact and establish a finite element model based on bullet impact tests to simulate and observe the propellant's combustion response under different conditions, clarifying the combustion response thresholds and laws of such propellants and providing technical support for safety assessment. Bullet impact tests were carried out on the target propellant to observe its response characteristics at different velocities and measure air overpressure. A finite element model was established based on the test results for numerical simulation and observation of the propellant response. Test results demonstrated that combustion response occurred when the bullet velocity exceeded 258.2 m/s, but no reaction occurred at 191.8 m/s. The finite element model showed minimal discrepancies with test results, indicating that combustion initiated above 200 m/s with slow propagation rates. At 191.8 m/s, no reaction occurs, while at 200 m/s, combustion progresses slowly. The finite element model established based on bullet impact tests matches the propellant reaction level in the test, and can serve as a reference for the practical applications and characteristic studies of such propellants.

Key words

reaction level / cased propellant / bullet impact test / numerical simulation / response characteristics

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TANG Yingrui, HAN Yong, GUO Bin, HE Na, ZOU Yu. Safety Characteristics of a Certain Ternary Al/AP/HTPB Propellant under Bullet Impact[J]. Packaging Engineering. 2026, 47(9): 107-117 https://doi.org/10.19554/j.cnki.1001-3563.2026.09.011

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