A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers

Tom De Vuyst; Rade Vignjevic; Adrian Azorin Albero; James C. Campbell; Nenad Djordjevic; Kevin Hughes

doi:10.1177/0954410016662076

A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers

Tom De Vuyst, Rade Vignjevic, Adrian Azorin Albero, James C. Campbell, Nenad Djordjevic, Kevin Hughes

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents the results of an investigation of the ballistic limits and failure modes of AA2024-T351 sheets impacted with cubical projectiles. The experiment/test setup was based on EASA CS-25 regulations for fuel tank access covers. The effect of cube orientation on the ballistic limit and failure modes was considered in detail. A 25% variation in ballistic limit was observed with the lowest ballistic limit (202 m/s) observed for the cubical projectile edge impacted on the target. In the cube face impacts, the ballistic limit was higher (223 m/s), and the highest ballistic limit (254 m/s) was observed for the corner impact. The observed differences in the ballistic limit were due to differences in failure mechanism, which resulted in different localised deformations near the projectile impact point, but also led to differences in global dishing deformation.

Original language	English
Pages (from-to)	1970-1978
Number of pages	9
Journal	Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Volume	231
Issue number	11
Early online date	29 Jul 2016
DOIs	https://doi.org/10.1177/0954410016662076
Publication status	Published - 1 Sept 2017

Keywords

ballistic impact
cube projectiles
EASA CS-25
engine debris
fuel tank access cover

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De Vuyst, T., Vignjevic, R., Azorin Albero, A., Campbell, J. C., Djordjevic, N., & Hughes, K. (2017). A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 231(11), 1970-1978. https://doi.org/10.1177/0954410016662076

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abstract = "This paper presents the results of an investigation of the ballistic limits and failure modes of AA2024-T351 sheets impacted with cubical projectiles. The experiment/test setup was based on EASA CS-25 regulations for fuel tank access covers. The effect of cube orientation on the ballistic limit and failure modes was considered in detail. A 25% variation in ballistic limit was observed with the lowest ballistic limit (202 m/s) observed for the cubical projectile edge impacted on the target. In the cube face impacts, the ballistic limit was higher (223 m/s), and the highest ballistic limit (254 m/s) was observed for the corner impact. The observed differences in the ballistic limit were due to differences in failure mechanism, which resulted in different localised deformations near the projectile impact point, but also led to differences in global dishing deformation.",

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De Vuyst, T, Vignjevic, R, Azorin Albero, A, Campbell, JC, Djordjevic, N & Hughes, K 2017, 'A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers', Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, vol. 231, no. 11, pp. 1970-1978. https://doi.org/10.1177/0954410016662076

A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers. / De Vuyst, Tom; Vignjevic, Rade; Azorin Albero, Adrian et al.
In: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, Vol. 231, No. 11, 01.09.2017, p. 1970-1978.

Research output: Contribution to journal › Article › peer-review

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AB - This paper presents the results of an investigation of the ballistic limits and failure modes of AA2024-T351 sheets impacted with cubical projectiles. The experiment/test setup was based on EASA CS-25 regulations for fuel tank access covers. The effect of cube orientation on the ballistic limit and failure modes was considered in detail. A 25% variation in ballistic limit was observed with the lowest ballistic limit (202 m/s) observed for the cubical projectile edge impacted on the target. In the cube face impacts, the ballistic limit was higher (223 m/s), and the highest ballistic limit (254 m/s) was observed for the corner impact. The observed differences in the ballistic limit were due to differences in failure mechanism, which resulted in different localised deformations near the projectile impact point, but also led to differences in global dishing deformation.

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De Vuyst T, Vignjevic R, Azorin Albero A, Campbell JC, Djordjevic N, Hughes K. A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 2017 Sept 1;231(11):1970-1978. Epub 2016 Jul 29. doi: 10.1177/0954410016662076

A study of the effect of projectile orientation on the results of ballistic impact tests as described in the EASA CS-25 regulations for fuel tank access covers

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