TY - GEN
T1 - Effect of Impact Fracture of RDX-Based High-Energy Gun Propellant on the Combustion Properties
AU - Zhou, Jing
AU - Wei, Ding
AU - Li, Da
N1 - Publisher Copyright:
© 2022, China Ordnance Society.
PY - 2022
Y1 - 2022
N2 - To study the influence of impact fracture on the combustion properties of gun propellants, a series of impact tests were carried out on RDX-based high-energy gun propellants by a dropping hammer impact device. Also the combustion performance of impact damaged gun propellant samples were studied by closed bomb test on the samples before and after impact. The results indicate that the pressure index and the burning rate coefficient of each sample change regularly with the increase of crushing degree. The pressure indexes decrease from 1.044 of pristine samples to 0.865 and 0.400, respectively. The burning rate coefficients increase from 0.099 cm s−1 MPa−n to 0.228 cm s−1 MPa−n and 3.319 cm s−1 MPa−n, respectively. In addition, the RDX-based high-energy gun propellants gradually change from obvious progressive surface combustion to complete degressive surface combustion. The study also reveals that the initial phase of combustion for fractured gun propellants has been boosted up, while the latter phase of combustion has been weakened reversely. With increasing the fracture degree of samples, the possibility of a sharp increase in the initial pressure and burning rate increases, which is detrimental to the stable combustion of gun propellants.
AB - To study the influence of impact fracture on the combustion properties of gun propellants, a series of impact tests were carried out on RDX-based high-energy gun propellants by a dropping hammer impact device. Also the combustion performance of impact damaged gun propellant samples were studied by closed bomb test on the samples before and after impact. The results indicate that the pressure index and the burning rate coefficient of each sample change regularly with the increase of crushing degree. The pressure indexes decrease from 1.044 of pristine samples to 0.865 and 0.400, respectively. The burning rate coefficients increase from 0.099 cm s−1 MPa−n to 0.228 cm s−1 MPa−n and 3.319 cm s−1 MPa−n, respectively. In addition, the RDX-based high-energy gun propellants gradually change from obvious progressive surface combustion to complete degressive surface combustion. The study also reveals that the initial phase of combustion for fractured gun propellants has been boosted up, while the latter phase of combustion has been weakened reversely. With increasing the fracture degree of samples, the possibility of a sharp increase in the initial pressure and burning rate increases, which is detrimental to the stable combustion of gun propellants.
KW - Applied chemistry
KW - Combustion property
KW - High-energy gun propellants
KW - Impact fracture
UR - http://www.scopus.com/inward/record.url?scp=85131150071&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-1774-5_31
DO - 10.1007/978-981-19-1774-5_31
M3 - Conference contribution
AN - SCOPUS:85131150071
SN - 9789811917738
T3 - Springer Proceedings in Physics
SP - 393
EP - 402
BT - 2021 International Conference on Development and Application of Carbon Nanomaterials in Energetic Materials
A2 - Gany, Alon
A2 - Fu, Xiaolong
PB - Springer Science and Business Media Deutschland GmbH
T2 - 2nd International Conference on Development and Application of Carbon Nanomaterials in Energetic Materials, ICCN 2021
Y2 - 19 August 2021 through 20 August 2021
ER -