scholarly journals Failure Investigation: in Flight Loss of a Main Landing Gear Door of a Transport Aircraft

2017 ◽  
Vol 3 ◽  
pp. 553-561
Author(s):  
G. Zucca ◽  
V. di Francesco ◽  
M. Bernabei ◽  
F. De Paolis
Keyword(s):  
Landing Gear ◽  
Transport Aircraft ◽  
Failure Investigation

Runway debris impact threat maps for transport aircraft

2014 ◽  
Vol 118 (1201) ◽  
pp. 229-266 ◽  
Author(s):  
S. N. Nguyen ◽  
E. S. Greenhalgh ◽  
J. M. R. Graham ◽  
A. Francis ◽  
R. Olsson
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Impact Damage ◽  
Landing Gear ◽  
Aerodynamic Forces ◽  
Element Modelling ◽  
Transport Aircraft ◽  
Lift And Drag ◽  
The Impact ◽  
Debris Impact

AbstractLarge transport aircraft are particularly susceptible to impact damage from runway debris thrown up by the landing gear. A methodology was developed to predict the trajectories of stones lofted by the nose wheel and subjected to aerodynamic forces due to the wake behind the nose landing gear and beneath the aircraft. In conjunction with finite element modelling of the stone/ground/tyre contact mechanics, an analytical model was used to perform a stochastic prediction of the trajectories of runway stones to generate impact threat maps which showed the relative likelihood of stones impinging upon various areas on the underside of a C-130 Hercules. The impact envelopes for the C-130 extended three to eighteen metres behind the nose wheel and two metres either side of the centre of the aircraft. The impact threat maps were especially sensitive to the values of the coefficients of lift and drag acting on the stone during its flight.

Design of a Fuselage-Mounted Main Landing Gear of a Medium-Size Civil Transport Aircraft

2018 ◽  
Vol 97 (2) ◽  
pp. 85-95 ◽  
Author(s):  
A. Nuti ◽  
F. Bertini ◽  
V. Cipolla ◽  
G. Di Rito
Keyword(s):  
Landing Gear ◽  
Medium Size ◽  
Transport Aircraft

Fatigue fracture of a nose landing gear in a military transport aircraft

2006 ◽  
Vol 13 (3) ◽  
pp. 474-479 ◽  
Author(s):  
L.A.L. Franco ◽  
N.J. Lourenço ◽  
M.L.A. Graça ◽  
O.M.M. Silva ◽  
P.P. de Campos ◽  
...  
Keyword(s):  
Fatigue Fracture ◽  
Landing Gear ◽  
Transport Aircraft

Landing Gear Influence on the Wake Vortex of a Large Transport Aircraft

2008 ◽  
Vol 45 (4) ◽  
pp. 1367-1372
Author(s):  
Alexander Allen ◽  
Christian Breitsamter
Keyword(s):  
Landing Gear ◽  
Wake Vortex ◽  
Transport Aircraft

scholarly journals Multibody rigid models and 3D FE models in numerical analysis of transport aircraft main landing gear

2015 ◽  
Vol 63 (3) ◽  
pp. 745-757 ◽  
Author(s):  
W. Krason ◽  
J. Malachowski
Keyword(s):  
Numerical Model ◽  
Contact Problems ◽  
3D Models ◽  
Landing Gear ◽  
Fe Model ◽  
Transport Aircraft ◽  
Aircraft Landing ◽  
Aircraft Landing Gear ◽  
Drop Tests ◽  
3D Numerical Model

Abstract Dynamic analyses of a transport aircraft landing gear are conducted to determine the effort of such a complex system and provide capabilities to predict their behaviour under hazardous conditions. This kind of investigation with the use of numerical methods implementation is much easier and less expensive than stand tests. Various 3D models of the landing gear part are defined for the multistage static FE analysis. A complete system of the main landing gear was mapped as a deformable 3D numerical model for dynamic analysis with the use of LS-Dyna code. In this 3D deformable FE model, developed in a drop test simulation, the following matters were taken into consideration: contact problems between collaborating elements, the phenomena of energy absorption by a gas-liquid damper placed in the landing gear and the response of the landing gear during the touchdown of a flexible wheel with the ground. The results of numerical analyses for the selected drop tests and the results from the experiments carried out on a real landing gear were used for verification of FE models and a methodology of the landing gear dynamics analysis. The results obtained from the various simulations of the touchdown have proved the effectiveness of the 3D numerical model and how many problems can be solved in the course of only one numerical run, e.g. geometric and material nonlinearities, a question of contact between the mating components, investigation of the landing gear kinematics, investigation of the energy dissipation problem in the whole system and the stresses influence on the structure behaviour, which can appear in some elements due to overload.

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