Acceleration Factor Acquisition for Complete Electromechanical Products of Missile Weapons

WANG Weifang; HE Qi; CAO Jiang; WU Jun

doi:10.7643/issn.1672-9242.2026.08.010

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (8) : 76-82. DOI: 10.7643/issn.1672-9242.2026.08.010

Weapons Equipment

Acceleration Factor Acquisition for Complete Electromechanical Products of Missile Weapons

WANG Weifang¹, HE Qi², CAO Jiang², WU Jun^1*

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Abstract

The work aims to propose a novel method for determining overall system acceleration factors to resolve core issues in accelerated test design and life assessment to address the arduous challenges posed by extremely long-term storage (exceeding 20 years), insufficient sample sizes, and urgent development cycles for missile weapon electromechanical systems. First, the general process of accelerated storage testing was systematically reviewed, with in-depth analysis of its limitations in full-system applications. Second, existing methods, including the failure rate ratio method, the accelerated degradation method, and the transformation method, were qualitatively compared and analyzed to highlight their applicability and inherent deficiencies in quantification under sparse data conditions. On this basis, this paper investigated and proposed an engineering method for obtaining the whole-system acceleration factor under sparse sample conditions using component and raw material data, based on the principle of reliable life equivalence. This method integrated the Weibull distribution and the exponential distribution, with reliability as a bridge to derive the whole-system acceleration factor. A case study of a complex electromechanical product in missile systems was presented, detailing the types of electronic components and raw materials used. Assuming a storage period reliability of 0.95, ambient storage temperature of 21 ℃, and accelerated test temperature of 75 ℃, the calculated overall system acceleration factor was 36.855. Results demonstrate that this acceleration factor approximates an activation energy of 0.59 eV, validating the method's ability to accurately capture the complex failure characteristics of full-system components. This approach provides precise parameter inputs and technical pathways for designing accelerated storage tests and extrapolating results for missile weapon electromechanical systems, offering significant theoretical value and engineering application potential for other complex equipment requiring long-term storage.

Key words

missile weapons / electromechanical product / accelerated storage testing / activation energy / acceleration factor / failure rate

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WANG Weifang, HE Qi, CAO Jiang, WU Jun. Acceleration Factor Acquisition for Complete Electromechanical Products of Missile Weapons[J]. Equipment Environmental Engineering. 2026, 23(8): 76-82 https://doi.org/10.7643/issn.1672-9242.2026.08.010

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