Effect of Joint Clearance on Landing Gear Retraction Failure

A simple method of investigating the effect of joint clearances on landing gear retraction failure is presented and applied to the main landing gear with a single sidestay and a hydraulic actuator. A geometric model is presented with assumptions of each link as a rigid body and their relative positi...

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Autores principales:	Sungjoon Cho, Hwanjeong Cho, Dooyoul Lee
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	joint clearance sensitivity analysis landing gear Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/3569894049804ded83173d09204097ed
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id	oai:doaj.org-article:3569894049804ded83173d09204097ed
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spelling	oai:doaj.org-article:3569894049804ded83173d09204097ed2021-11-25T15:57:25ZEffect of Joint Clearance on Landing Gear Retraction Failure10.3390/aerospace81103292226-4310https://doaj.org/article/3569894049804ded83173d09204097ed2021-11-01T00:00:00Zhttps://www.mdpi.com/2226-4310/8/11/329https://doaj.org/toc/2226-4310A simple method of investigating the effect of joint clearances on landing gear retraction failure is presented and applied to the main landing gear with a single sidestay and a hydraulic actuator. A geometric model is presented with assumptions of each link as a rigid body and their relative positions geometrically determined by considering the size of the clearances. We conducted a sensitivity analysis based on a geometric model of the main landing gear. The model was calibrated using the data from the technical order. A Monte Carlo simulation (MCS) was conducted, and whose input was the distance of each clearance based on the experimental design that combined the modified Latin hypercube sampling (LHS) and central composite design (CCD). As a result, we were able to find that the joint had a high potential to operate abnormally. We validated the model by using the actual failure data. Finally, the physical meaning of the sensitivity analysis results was interpreted by comparing them with the values obtained through an amplification index method that is a modified linearization method.Sungjoon ChoHwanjeong ChoDooyoul LeeMDPI AGarticlejoint clearancesensitivity analysislanding gearMotor vehicles. Aeronautics. AstronauticsTL1-4050ENAerospace, Vol 8, Iss 329, p 329 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	joint clearance sensitivity analysis landing gear Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	joint clearance sensitivity analysis landing gear Motor vehicles. Aeronautics. Astronautics TL1-4050 Sungjoon Cho Hwanjeong Cho Dooyoul Lee Effect of Joint Clearance on Landing Gear Retraction Failure
description	A simple method of investigating the effect of joint clearances on landing gear retraction failure is presented and applied to the main landing gear with a single sidestay and a hydraulic actuator. A geometric model is presented with assumptions of each link as a rigid body and their relative positions geometrically determined by considering the size of the clearances. We conducted a sensitivity analysis based on a geometric model of the main landing gear. The model was calibrated using the data from the technical order. A Monte Carlo simulation (MCS) was conducted, and whose input was the distance of each clearance based on the experimental design that combined the modified Latin hypercube sampling (LHS) and central composite design (CCD). As a result, we were able to find that the joint had a high potential to operate abnormally. We validated the model by using the actual failure data. Finally, the physical meaning of the sensitivity analysis results was interpreted by comparing them with the values obtained through an amplification index method that is a modified linearization method.
format	article
author	Sungjoon Cho Hwanjeong Cho Dooyoul Lee
author_facet	Sungjoon Cho Hwanjeong Cho Dooyoul Lee
author_sort	Sungjoon Cho
title	Effect of Joint Clearance on Landing Gear Retraction Failure
title_short	Effect of Joint Clearance on Landing Gear Retraction Failure
title_full	Effect of Joint Clearance on Landing Gear Retraction Failure
title_fullStr	Effect of Joint Clearance on Landing Gear Retraction Failure
title_full_unstemmed	Effect of Joint Clearance on Landing Gear Retraction Failure
title_sort	effect of joint clearance on landing gear retraction failure
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3569894049804ded83173d09204097ed
work_keys_str_mv	AT sungjooncho effectofjointclearanceonlandinggearretractionfailure AT hwanjeongcho effectofjointclearanceonlandinggearretractionfailure AT dooyoullee effectofjointclearanceonlandinggearretractionfailure
_version_	1718413372262711296

Effect of Joint Clearance on Landing Gear Retraction Failure

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