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<p>Air-to-ship missiles are widely used in aerospace systems, typically carrying semi-armor-piercing warheads that can effectively enhance combat effectiveness. This study investigates the effect of nose shape on the penetration capability of semi-armor-piercing warheads, which establishes that five semi-armor-piercing warheads with varying nose shapes. Numerical simulations were performed to analyze the penetration of five nose-shaped warheads into 15.2&#xa0;mm-thick 921&#xa0;A thin steel plates at a target velocity of 606&#xa0;m/s using LS-DYNA software. The analysis examines the effects of truncated nose diameter, impact angle, and attack angle on velocity loss during impact. The results indicate that velocity loss increases with the truncated nose diameter during vertical penetration, with a maximum loss of 9.6% observed for flat-nose warheads. Both the attack angle and impact angle increase velocity loss, with the attack angle having a more significant effect. When the attack angle is 0°, velocity loss increases significantly when the impact angle exceeds 40°. Additionally, when the incident angle was held constant at 30°, both positive and negative angles of attack had similar effects on velocity loss, becoming significant when the absolute value of the attack angle exceeded 5°. Conversely, with the incident angle of 30°, the effect of a positive attack angle on velocity loss is greater than that of a negative attack angle.</p>

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Study on the effect of nose shape for penetration performance of air-to-ship missile warhead with semi-armor-piercing

  • 期刊论文

  • 发表日期：

    2025年8月15日

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  • Bin Yu,
  • Xinzhe Zhang,
  • Yu Fan,
  • Guoju Li

摘要

Air-to-ship missiles are widely used in aerospace systems, typically carrying semi-armor-piercing warheads that can effectively enhance combat effectiveness. This study investigates the effect of nose shape on the penetration capability of semi-armor-piercing warheads, which establishes that five semi-armor-piercing warheads with varying nose shapes. Numerical simulations were performed to analyze the penetration of five nose-shaped warheads into 15.2 mm-thick 921 A thin steel plates at a target velocity of 606 m/s using LS-DYNA software. The analysis examines the effects of truncated nose diameter, impact angle, and attack angle on velocity loss during impact. The results indicate that velocity loss increases with the truncated nose diameter during vertical penetration, with a maximum loss of 9.6% observed for flat-nose warheads. Both the attack angle and impact angle increase velocity loss, with the attack angle having a more significant effect. When the attack angle is 0°, velocity loss increases significantly when the impact angle exceeds 40°. Additionally, when the incident angle was held constant at 30°, both positive and negative angles of attack had similar effects on velocity loss, becoming significant when the absolute value of the attack angle exceeded 5°. Conversely, with the incident angle of 30°, the effect of a positive attack angle on velocity loss is greater than that of a negative attack angle.