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ITEMB Project “InTEgrated Main landing gear Box” is part of the Large Passenger Aircraft (LPA) Program area of Clean Sky 2 and is in connection with “Next Generation Lower Center Fuselage” LPA activities whose Topic Manager is Airbus.

 

Scope of Next Generation Lower Center activities is to develop a new generation of Lower Center Fuselage with an innovative Concept of Landing Gear fully integrated into the fuselage body. In order to contribute to this concept is, considered the next frontier to be passed in the development of the Landing Gear System for Medium Range Aircraft Family like Airbus A320, objective of ITEMB project is to provide a suitable structural configuration of the landing gear bay.

THE PROJECT

ITEMB intends to contribute to the optimization of the Air Transportation Systems, making them more sustainable, in accordance with the Clean Sky 2 general objective of reducing CO2 emissions and fuel consumption

Currently, the typical medium range aircraft configuration, like A320, sees the Main Landing Gear integrated under the wing of the aircraft and the LG bay made up of mostly of parts. ITEMB intends to explore a different scenario, based on an integrated landing system in the aircraft fuselage and aims to conceive a new configuration of the carriage trolley bay where the cart is to be integrated. The new approach is based on the use of composite materials.

Composite materials allow a reduction of weight and cost of the structural component. For this to happen, you need to get away from the design paradigms for metal components and start to “think in composite”. ITEMB’s ambition is, therefore, to create a single composite structure of the carriage bay that reduces assembly costs by optimizing and integrating the entire design, construction and maintenance of the aircraft.

ACHIEVED PROJECT MILESTONES

An Important Project Millstone has been reached for ITEMB project last October: The freezing of the Composite Main Landing Gear Bay.

The initial phase of the project have been focused in the conceptual studies of different configurations for the upper and vertical bulkhead of the Main Landing Gear bay and a trade-off has been made between them in order to finalize a suitable configuration to be considered for the next preliminary and detailed design phase of ITEMB. The different configuration have been compared in terms of most suitable loads path, of weight saving and in terms of manufacturing process. During this phase, in order to additionally substantiate the choice have been performed also some tests on very simple structural components.

Configurazione Scelta per la Paratia superiore e verticale della baia carrello

Configuration of the upper and vertical bulkhead for the MLGB

Dettaglio del Global FEM

Global FEM

Elemento sottoposto a Prove

Structural component tested

In April 2018 a new Milestone reached takes the Consortium’s results beyond  expectations

The concept of the Upper and Vertical Bulkheads of the Landing Gear Bay bay has been refined (reaching an advanced level of definition), this concept has been then subjected to tests with positive results. Tests have been done on samples of scale models of the composite structural parts, these have been produced specifically to be analyzed and subjected to possible corrective actions, before the realization of the final demonstrator.

During tests it has been possible to find good performances of some of the areas considered most critical, with a consequent reduction in the level of risk, which in perspective provides good guarantees in terms of reliability. The results that emerged in terms of weight reduction are also significant, the cost analysis also highlighted a reduction in assembly costs beyond expectations.

 

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THE CONSORTIUM

ITEMB Project Consortium is constituted by three legal entities, that are well balanced and complete each other in terms of competences and expertise: Protom Group S.p.a., LAER S.r.l. and UNINA.

Since highly specialized companies with a strong focus on aeronautics are involved in the project, the achieved benefits will be transferred directly to aircraft European sector, thus strengthening the competitiveness of the partner and creating potential for growth by developing process innovations meeting the needs of the European, global markets. The combined reduction of of development costs and structural weight is much more beneficial for the long-term success and competitiveness of aircraft development .

REPOSITORY

PRESS RELAESE

  • The Daily Cases - Protom presents the results of its research projects at Aeromart Toulouse 2016

  • Agenzia Nova - Aerospace: Protom presents the results of its research projects at Aeromart Toulouse 2016

  • Arga Campania - Protom presents the results of its research projects at Aeromart Toulouse 2016

DOWNLOADABLE ITEMB MATERIALS

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SCIENTIFIC PUBLICATIONS

  • Experimental technologies comparison for strain measurement of a composite main landing gear bay specimen (DOI: 10.1117/12.2296420)

  • Pull-off test analysis and numerical correlation of an innovative landing gear bay composite component

ITEMB

ITEMB

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 717190.

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