TY - GEN
T1 - The effect of exit velocity and material on the sabot separation launched by ground-based railgun
AU - Kasahara, Hirotaka
AU - Matsuo, Akiko
N1 - Funding Information:
This work is supported and part of the simulation result is calculated by supercomputing resources at Cyber Science Center, Tohoku University.
Publisher Copyright:
© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2018
Y1 - 2018
N2 - In this paper, the sabot separation process in super/hypersonic flight from 600 to 2501 m/s is numerically investigated by using CFD and RBD (Rigid Body Dynamics). Firstly, the motion of sabot separation is calculated for validating our in-house code. CFD-RBD code shows good agreements with Mehmet’s experiment. Secondary, the effects of exit velocity from muzzle are examined. While all sabot velocities differ, sabot separations indicate the same trajectory. The variation of sabot velocity can be eliminated by non-dimensionalization considering exit velocity. Finally, the effects of sabot material, which means mass density, are investigated with railgun acceleration condition. Sabot separation shows different motion completely depending on sabot material. However, non-dimensionalization eliminates the effect of sabot material on separation. Proposed non-dimensionalization method can represent the various sabot separation motions in unique one trajectory, considering exit velocity and sabot density in time term.
AB - In this paper, the sabot separation process in super/hypersonic flight from 600 to 2501 m/s is numerically investigated by using CFD and RBD (Rigid Body Dynamics). Firstly, the motion of sabot separation is calculated for validating our in-house code. CFD-RBD code shows good agreements with Mehmet’s experiment. Secondary, the effects of exit velocity from muzzle are examined. While all sabot velocities differ, sabot separations indicate the same trajectory. The variation of sabot velocity can be eliminated by non-dimensionalization considering exit velocity. Finally, the effects of sabot material, which means mass density, are investigated with railgun acceleration condition. Sabot separation shows different motion completely depending on sabot material. However, non-dimensionalization eliminates the effect of sabot material on separation. Proposed non-dimensionalization method can represent the various sabot separation motions in unique one trajectory, considering exit velocity and sabot density in time term.
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U2 - 10.2514/6.2018-3819
DO - 10.2514/6.2018-3819
M3 - Conference contribution
AN - SCOPUS:85051699946
SN - 9781624105593
T3 - 2018 Applied Aerodynamics Conference
BT - 2018 Applied Aerodynamics Conference
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 36th AIAA Applied Aerodynamics Conference, 2018
Y2 - 25 June 2018 through 29 June 2018
ER -