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Adaptive Landing Gears for Improved Impact Absorption (ADLAND)

Adaptive Landing Gears for Improved Impact Absorption (ADLAND)

Objective

The proposed project deals with evaluating the options for adaptive shock absorbers to be applied in aircraft landing gears. Analytical design procedures will be developed to simulate different potential design options and a best practice solution determined. The different hardware components regarding adaptive shock absorbers will then be developed and tested with regard to an adaptive landing gear model. The objectives of the proposed project are: to develop a concept of adaptive shock-absorbers -to develop new numerical tools for design of adaptive vehicles and for simulation of the adaptive structural response to an impact scenario -to develop technology for actively controlled shock-absorbers applicable in landing gears (two options: MR fluid-based and piezo-valve-based will be considered) -to design, produce and perform repetitive impact tests of the adaptive landing gear model with high impact energy dissipation effect. to design, produce and test in flight the chosen full-scale model of the adaptive landing gear. Typically, shock absorbers are designed as passive devices with characteristics adjusted to the most frequently expected impact loadings. However, in many cases the variation of real working conditions is so high, that the optimally designed passive shock absorber does not perform well enough. For example, the large variations in impact loads found under different landing conditions means that the full stroke length of a passive device will not always be utilised. In contrast to the passive systems the proposed research focuses on active adaptation of energy absorbing structural elements where the system of sensors recognises the type of impact loading, and activates energy absorbing components to guarantee optimal dissipation of impact energy. The term "active adaptation to impact" refers to the control strategy used to determine the damper control signal based upon measured outputs from sensor, e.g. rad#

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Coordinator

INSTYTUT PODSTAWOWYCH PROBLEMOW TECHNIKI - POLSKA AKADEMIA NAUK

Address

Swietokrzyska 21
Warszawa

Poland

Administrative Contact

Jan HOLNICKI-SZULC (Professor)

Participants (6)

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POLSKIE ZAKLADY LOTNICZE

Poland

INSTYTUT LOTNICTWA

Poland

FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

Germany

CEDRAT TECHNOLOGIES SA

France

UNIVERSITY OF SHEFFIELD

United Kingdom

MESSIER-DOWTY SA

France

Project information

Grant agreement ID: 502793

  • Start date

    1 December 2003

  • End date

    30 November 2006

Funded under:

FP6-AEROSPACE

  • Overall budget:

    € 3 006 352

  • EU contribution

    € 1 772 390

Coordinated by:

INSTYTUT PODSTAWOWYCH PROBLEMOW TECHNIKI - POLSKA AKADEMIA NAUK

Poland