Life Extension of F/A-18 LAU-7 Missile Launcher Housings Using Rework Shape Optimisation

M. Heller; Jaime Calero; Ron Wescott; Simon A. Barter; Jireh Choi; Greg Surtees

doi:10.4028/www.scientific.net/AMR.891-892.739

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Life Extension of F/A-18 LAU-7 Missile Launcher...

Life Extension of F/A-18 LAU-7 Missile Launcher Housings Using Rework Shape Optimisation

Abstract:

LAU-7 missile launcher housings, which are fitted to most Royal Australian Air Force (RAAF) F/A-18A/B aircraft, can experience cracking in the guide rail. This paper covers the design, manufacture and validation of a life extension repair for cracked launcher housings. The repair development uses DSTO's rework shape optimisation technology and fatigue testing capabilities. The rework design reduces peak stresses by 33 %, resulting in significant fatigue life enhancements, as demonstrated by representative coupon testing. A special manufacturing jig has been designed and transitioned to the RAAF, which has used it to repair housings. These housings have performed well in flight tests, with no cracking detected.

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Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

739-744

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.739

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Online since:

March 2014

Authors:

M. Heller, Jaime Calero, Ron Wescott, Simon A. Barter, Jireh Choi, Greg Surtees

Keywords:

Crack Repair, Fatigue Life Extension, Fatigue Testing, Shape Optimisation

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References

[1] Heller, M., Calero, J., Barter, S.A., Wescott, R.J. & Choi, J., Fatigue Life Extension Program for LAU-7 Missile Launcher Housings using Rework Shape Optimisation, DSTO-TR-2662, Department of Defence, DSTO, Air Vehicles Division. (2012).

DOI: 10.4028/www.scientific.net/amr.891-892.739

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DOI: 10.1007/978-90-481-2746-7_17

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DOI: 10.4028/www.scientific.net/amr.891-892.739

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