Experimental validation of landing-gear dynamics for anti-skid control design

2018 ◽  
Author(s):  
L. DrAvico ◽  
M. Tanelli ◽  
S.M. Savaresia
Keyword(s):  
Experimental Validation ◽  
Control Design ◽  
Landing Gear ◽  
Gear Dynamics

scholarly journals Uncertainty and Sensitivity Analysis of Bifurcation Loci Characterizing Nonlinear Landing-Gear Dynamics

2018 ◽  
Vol 55 (1) ◽  
pp. 162-172 ◽  
Author(s):  
I. Tartaruga ◽  
J. E. Cooper ◽  
M. H. Lowenberg ◽  
P. Sartor ◽  
Y. Lemmens
Keyword(s):  
Sensitivity Analysis ◽  
Landing Gear ◽  
Gear Dynamics ◽  
Uncertainty And Sensitivity Analysis

Nonlinear Grey-box Identification of a Landing Gear based on Drop Test Data

2020 ◽  
Author(s):  
Elias Dias Rossi Lopes ◽  
Helon Vicente Hultmann Ayala
Keyword(s):  
Control Design ◽  
Simulated Data ◽  
Federal Aviation Administration ◽  
Landing Gear ◽  
Drop Test ◽  
Equivalent Stiffness ◽  
Gear Design ◽  
Drop Tests ◽  
Adequate Evaluation ◽  
Stiffness And Damping

In many aircraft applications, especially on an antiskid control design, it is important to understand and consider the gear walk phenomenon, which is characterized by the deflection on the landing gear structure due the high braking force acting at the tire contact with the ground. This phenomenon is observed on drop tests, and its prediction on landing gear design depends on an adequate evaluation of the equivalent stiffness and damping of the structure, which is difficult, since they depend on the mechanism configuration. In this paper, it is presented a grey-box identification methodology for estimating these parameters of the landing gear, based on simulated data of a drop test. As the drop tests are mandatory obligatory for certificating modern aircraft according to e.g. Federal Aviation Regulations (FARs) by the Federal Aviation Administration (FAA), we hope to introduce a method based on measurements that are available at the design phase. The method will be useful to decrease men/hour costs and increase reliability by enabling better and more accurate anti-skid design.

Topics in landing gear dynamics research at NASA Langley

1988 ◽  
Vol 25 (1) ◽  
pp. 84-93
Author(s):  
Harvey G. McComb ◽  
John A. Tanner
Keyword(s):  
Landing Gear ◽  
Gear Dynamics

A Comparative, Experimental Study of Model Suitability to Describe Vehicle Rollover Dynamics for Control Design

2005 ◽  
Author(s):  
John T. Cameron ◽  
Sean Brennan
Keyword(s):  
Experimental Validation ◽  
Controller Design ◽  
Experimental Testing ◽  
Control Strategies ◽  
Control Design ◽  
Experimental Results ◽  
Dynamics And Control ◽  
Vehicle Rollover ◽  
And Control ◽  
Future Work

This work presents results of an initial investigation into models and control strategies suitable to prevent vehicle rollover due to untripped driving maneuvers. Outside of industry, the study of vehicle rollover inclusive of both experimental validation and practical controller design is limited. The researcher interested in initiating study on rollover dynamics and control is left with the challenging task of identifying suitable vehicle models from the literature, comparing these models with experimental results, and determining suitable parameters for the models. This work addresses these issues via experimental testing of published models. Parameter estimation data based on model fits is presented, with commentary given on the validity of different methods. Experimental results are then presented and compared to the output predicted by the various models in both the time and frequency domain in order to provide a foundation for future work.

scholarly journals Overview of Landing Gear Dynamics

2001 ◽  
Vol 38 (1) ◽  
pp. 130-137 ◽  
Author(s):  
Jocelyn Pritchard
Keyword(s):  
Landing Gear ◽  
Gear Dynamics
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