DECROR

Structural design of a counter-rotating open rotor

Coordinatore	IBK INGENIEURBUERO HAUPTSITZ    more  Organization address address: REHDORFER 4 postcode: 90431 contact info Titolo: Mr. Nome: Stephan Cognome: Adden Email: send email Telefono: +49 911 393560
Nazionalità Coordinatore	Germany [DE]
Totale costo	194˙150 €
EC contributo	145˙612 €
Programma	FP7-JTI Specific Programme "Cooperation": Joint Technology Initiatives
Code Call	SP1-JTI-CS-2009-01
Funding Scheme	JTI-CS
Anno di inizio	2010
Periodo (anno-mese-giorno)	2010-01-01   -   2011-06-30

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	IBK INGENIEURBUERO HAUPTSITZ	DE	coordinator	145˙612.00

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 Obiettivo del progetto (Objective)

'In this project two fe-models for counter-rotating open rotors made from composites are needed. Before generating these models a structural design is necessary. IBK is a SME with a long tradition in both structural mechanics and aerodynamics. Consequently our customers come from areas where both parts of our knowledge are needed, which is among the aviation industry the turbine industry. IBK can therefore draw on long years of experience in the field that is needed here. Therefore a project is proposed, in which the disciplines of designing rotating devices (in this case an open rotor) and designing parts with composites (in this case the rotor blade) are united. IBK will start with an detailed analysis of the design problem of the rotor-blade, propose and discuss solution with the JTI-Consortium and develop a composite-design, using a modern, state of the art failure criterion which promises a high level of quality for the design. All relevant steps will be performed in close cooperation with the contractor, in order to ensure that all input for the project is accounted for.'

Introduzione (Teaser)

The aviation industry is currently responsible for a large portion of global greenhouse gas emissions. New research is improving and testing rotor blade design as part of a larger initiative established to improve the sustainability of commercial aviation.

Descrizione progetto (Article)

Counter-rotating rotors are a new type of rotor that offers decreased carbon dioxide (CO2) output and improved fuel efficiency. To implement this technology, rigorous structural testing and modelling must take place.

The EU-funded 'Structural design of a counter-rotating open rotor' (DECROR) project designed, tested and evaluated a carbon composite counter-rotating open rotor blade. This was done by a German company with experience in aerodynamics and structural mechanics testing.

A first goal was the design and construction of a wind tunnel model of the carbon composite rotor blade. This model was rigorously tested for strength, excessive vibrations and deformation under pressure. The data gathered were then used for the construction of full-scale rotor blades.

Three full-sized blades were designed with a view to reducing weight. The blades were tested for strength, fatigue, elasticity under flight conditions and overall stability.

Project efforts have resulted in new modelling and design resources, as well as expertise, at the German company. They also contribute to the broader aims of the Clean Sky initiative, which endeavour to make aviation more sustainable. DECROR accomplishments have also laid the groundwork for further research.