Analysis of Fuze Safety During Accidental Ignition and Launch of Rockets and Missiles

WANG Yushi

doi:10.7643/issn.1672-9242.2026.04.002

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (4) : 11-22. DOI: 10.7643/issn.1672-9242.2026.04.002

Weapons Equipment

Analysis of Fuze Safety During Accidental Ignition and Launch of Rockets and Missiles

WANG Yushi

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Abstract

Currently, the ignition systems of many rocket and missile engines still employ sensitive in-line charge structures and their safety design does not meet the requirements of the safety design criteria standards, and the probability of accidental ignition is significantly higher than the standard-specified one in a million. To address this issue, the work aims to conduct an analysis of fuze safety after the accidental ignition of the rocket engine based on its arming principles and historical incidents. After the single point of failure of the rocket engine's unexpected ignition, the rocket might be propelled into flight, creating the ballistic environmental conditions for the fuze to arm and further leading to unintended arming of the fuze and detonation of the warhead, thereby escalating the accident. Solutions included improving the safety of the ignition system and adding non-ballistic environmental conditions for fuze arming. The aforementioned issues are widespread in non-long-range tactical rockets, while in tactical missiles, they exist only as isolated cases.

Key words

fuze safety / system analysis / system design / design philosophy / rocket engine ignition system / fuze safety failure rate / fail-safe / self-propelled ammunition

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WANG Yushi. Analysis of Fuze Safety During Accidental Ignition and Launch of Rockets and Missiles[J]. Equipment Environmental Engineering. 2026, 23(4): 11-22 https://doi.org/10.7643/issn.1672-9242.2026.04.002

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