Suspension and landing gear failures

Ossa, E.A.; Paniagua, Marco

doi:10.1016/b978-0-12-800950-5.00008-9

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Kegagalan landing gear terjadi sekitar 10% dari total kegagalan yang dilaporkan dalam industri dirgantara. [9] Gambar 1 Landing gear jenis tricycle landing gear pada pesawat UAV [10] Struktur landing gear dapat mengalami kegagalan karena beberapa faktor. Faktor-faktor yang berpengaruh terhadap kegagalan struktur landing gear antara lain disebabkan oleh beban berlebihan, kegagalan desain, korosi, dan fatik.…”

Section: Pendahuluanunclassified

Untitled

Wibawa¹

2020

Elemen

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Landing gear merupakan salah satu komponen penting dalam struktur pesawat UAV. Landing gear berfungsi sebagai komponen pendukung utama beban pesawat saat mendarat dan lepas landas. Makalah ini bertujuan untuk mengkaji pengaruh kecepatan landing terhadap umur fatik rangka tricycle landing gear pesawat UAV. Desain rangka tricycle landing gear menggunakan Autodesk Inventor Professional 2017, sedangkan analisis umur fatik menggunakan perangkat lunak Ansys Workbench. Kecepatan landing divariasikan 4 m/s, 6 m/s, 8 m/s, dan 10 m/s. Prediksi untuk umur fatik menggunakan teori tegangan rata-rata Gerber dengan jenis pembebanan fullreserved. Material landing gear menggunakan Aluminium paduan 6061. Hasil simulasi menunjukkan rangka tricycle landing gear dengan kecepatan landing

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Section: Pendahuluanunclassified

Untitled

Wibawa¹

2020

Elemen

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“…Of particular relevancy for lateral stability is the condition of the landing gear. Despite the efforts in the industry, landing gear failure is still among the common causes of aircraft failures [1]. One of the landing gear components that requires significant maintenance is the shock absorber, which is subject to oil and gas leakages during its operational life [2,3].…”

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Shock Absorber Leakage Impact on Aircraft Lateral Stability During Ground Handling Maneuvers

Lopetegui

Papa

Morandini

et al. 2023

Journal of Guidance, Control, and Dynamics

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Aircraft braking maneuvers are safety-critical on-ground motions that exhibit complex dynamics and significant dependence on system operating conditions. The fundamental interface between the aircraft and the ground is the landing gear. Among the landing gear components, the shock absorbers may be subject to gas leakage during their lifetime, which is an anomaly that could compromise the lateral stability properties of the aircraft on the operating regimes found during braking maneuvers. In this paper, an explicit link is established between main landing gear shock absorber leakage and aircraft lateral stability. To investigate lateral stability, a high-fidelity multibody nonlinear aircraft simulator is developed in a MATLAB/Simulink framework and validated against experimental data. To generate insight into the problem and to quantify shock absorber leakage impact on aircraft lateral stability, two simple but descriptive analytical models are also developed, each one on a different operating mode of the system. The analysis of the models reveals that shock absorber leakage can have a significant effect on aircraft lateral stability, especially at high velocities and highly damped nose wheel steering conditions. The models developed in this work may be used by aircraft control system designers to come up with more effective lateral stability controllers in the event of main landing gear shock absorber leakage.

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