Interdisciplinary landing gear layout for large transport aircraft

Author(s):  
W. Krueger ◽  
M. Spieck
2014 ◽  
Vol 118 (1201) ◽  
pp. 229-266 ◽  
Author(s):  
S. N. Nguyen ◽  
E. S. Greenhalgh ◽  
J. M. R. Graham ◽  
A. Francis ◽  
R. Olsson

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.


2018 ◽  
Vol 97 (2) ◽  
pp. 85-95 ◽  
Author(s):  
A. Nuti ◽  
F. Bertini ◽  
V. Cipolla ◽  
G. Di Rito

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 ◽  
...  

2017 ◽  
Vol 3 ◽  
pp. 553-561
Author(s):  
G. Zucca ◽  
V. di Francesco ◽  
M. Bernabei ◽  
F. De Paolis

2008 ◽  
Vol 45 (4) ◽  
pp. 1367-1372
Author(s):  
Alexander Allen ◽  
Christian Breitsamter

2015 ◽  
Vol 63 (3) ◽  
pp. 745-757 ◽  
Author(s):  
W. Krason ◽  
J. Malachowski

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.


1993 ◽  
Vol 65 (9/10) ◽  
pp. 22-24 ◽  
Author(s):  
Terry Ford

THE ATR consortium manufactures a range of transport aircraft for which Aerospatiale supplies the wings and associated structure and Alenia of Italy manufactures the fuselage and empennage. Engines, propellers and landing gear are supplied by Pratt & Whitney of Canada, Hamilton Standard and Messier‐Bugatti, respectively. At Le Bourget this year, the opportunity was taken to introduce new models together with plans for the future.


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