Project description
Damping noise in ultra-high bypass ratio engines
The bypass ratio is one of the key indicators of turbofan engine efficiency. Ultra-high bypass ratio (UHBR) engines have large fans that rotate at relatively low speeds and therefore consume less fuel. Although high bypass ratios generate lower jet and fan noise, the engine core noise increases. The EU-funded CIRRUS project will combine numerical simulations and experimental work to reduce engine core noise for future UHBR 2030+ turbofan engines. Another part of the work will be geared towards the development of acoustic liners based on ceramic matrix composites. The proposed low-noise concepts will be tested in real engines. The experimental measurements will be compared to theoretical ones to bring the proposed technologies to a high level of maturity (technology readiness level 6).
Objective
The propulsion of the majority of commercial aircraft relies on turbofan engines. The current trend for future turbofan engines is towards even higher bypass ratios. These Ultra-High Bypass Ratio (UHBR) engines have large fans rotating at relatively low speeds. As a consequence of the lower speed, the fuel consumption can be reduced. Another consequence is that the engine noise signature is modified. While jet noise and fan noise will be reduced, core noise will be become more significant. In this context, the CIRRUS project aims to validate advanced low noise concepts, by developing both advanced numerical and experimental tools, to reduce the core noise of future UHBR 2030+ turbofan engines.
The overall goals of CIRRUS are to:
Improve numerical methods to predict the noise source mechanisms and the acoustic core noise radiation,
Improve experimental methods to measure the contribution of core noise on real engines,
Develop, test and integration of new generations of noise reduction acoustic liners made of Ceramic Matrix Composites (CMC),
Investigate on future UHBR 2030+ architectures the influence on the core noise sources by comparing various configurations of turbines by reducing the number of stages.
The first stream of the project is dedicated to the improvement of the core noise prediction tools with the implementation of an industrial LES/CAA workflow. A second stream is focused on experimental activities with the development of post-processing methodologies to identify the core noise contribution. The third stream of the project is focused on low noise concepts. CMC liner concepts will be investigated and tested. Finally, the relevant low noise concepts will be evaluated on a full scale UHBR and a core noise experimental data base will be created by conducting acoustic test campaigns on realistic engines. A comparison between measurements and simulation results will be performed to qualify the numerical means up to TRL6.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology materials engineering composites
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aircraft
- engineering and technology environmental engineering energy and fuels
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
H2020-EU.3.4. - SOCIETAL CHALLENGES - Smart, Green And Integrated Transport
MAIN PROGRAMME
See all projects funded under this programme -
H2020-EU.3.4.5.1. - IADP Large Passenger Aircraft
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
IA - Innovation action
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-CS2-CFP10-2019-01
See all projects funded under this callCoordinator
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
69131 Ecully
France
The organization defined itself as SME (small and medium-sized enterprise) at the time the Grant Agreement was signed.
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.