Fineunit LTD


Ageing Aircraft life extension Project



Slingsby T61 Life Extension



SCOPE ANALYSIS



Determine revised fatigue life expectancy of Slingsby Sailplane Venture T Mk2 Motor glider



ANALYSIS



  • Stress Analysis of Fuselage using Strain Gauge data from Operational Load Measurement Trials and Finite Element Analysis


  • Fatigue and Crack growth analysis of critical regions is used to determine Inspection regime for revised life expectancy


FINITE ELEMENT MODEL



Using FEMAP Finite Element package, the full steel trussconstruction of the fuselage is modelled to determineaccurate load distribution throughout
the fuselage.



Conclusion



  • Analysis carried out established a Fatigue Life Expectancy increase of 25 years of service
  • Detailed inspection regime delivered to client for Continued Airworthiness
  • CAA Approval issued in Airworthiness Directive G-2018-0001


Information and copyright Fineunit Ltd Jan 2021



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