The Study of Air-Cushioned Aircraft Landing Gear Demonstrator using Design of Experiments Algorithm

In this article we consider the design of experiments (DOE) algorithm for an aircraft with landing gear on air cushion. For the purpose of this research we carried out two types of experiments: static and quasi-dynamic. Taking into account the difference of surfaces, this work offers two mathematical models for static and quasi-dynamic events. In order to build multi-factor regression models we conducted 24 experiments for the quasi-dynamic test and 12 for the static test. Further, the parameters of accuracy and adequacy of the non-linear multivariate model of the first order were not sufficient, thus it was necessary to increase the order of polynomials. The higher the order of polynomial approximation is, the more accurate the original mathematical model becomes. For a given air-cushioned aircraft landing gear the second order polynomial was sufficient to verify the reliability of the data obtained.

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