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Bayesian sensitivity analysis of flight parameters that affect main landing gear yield locations

Published online by Cambridge University Press:  27 January 2016

P. Sartor ,
K. Worden ,
R. K. Schmidt  and
D. A. Bond
P. Sartor*
Affiliation:
Department of Aerospace Engineering, University of Bristol, Bristol, UK
K. Worden*
Affiliation:
Department of Mechanical Engineering, University of Sheffield, Sheffield, UK
R. K. Schmidt*
Affiliation:
Messier-Bugatti-Dowty, Gloucester, UK
D. A. Bond*
Affiliation:
Messier-Bugatti-Dowty, Gloucester, UK
*
[email protected]
[email protected]
[email protected]
[email protected]
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Abstract

An aircraft and landing gear loads model was developed to assess the Margin of Safety (MS) in main landing gear components such as the main fitting, sliding tube and shock absorber upper diaphragm tube. Using a technique of Bayesian sensitivity analysis, a number of flight parameters were varied in the aircraft and landing gear loads model to gain an understanding of the sensitivity of the MS of the main landing gear components to the individual flight parameters in symmetric two-point landings. The significant flight parameters to the main fitting MS, sliding tube bending moment MS and shock absorber upper diaphragm tube MS include: longitudinal tyre-runway friction coefficient, aircraft vertical descent velocity, aircraft Euler pitch angle and aircraft mass. It was also shown that shock absorber servicing state and tyre pressure do not contribute significantly to the MS.

Type
Research Article
Information
The Aeronautical Journal , Volume 118 , Issue 1210 , December 2014 , pp. 1481 - 1497
Copyright
Copyright © Royal Aeronautical Society 2014 

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