Skip to main content

Aicraft Design and nOise RatiNg for regiOnal aicraft

Periodic Reporting for period 1 - ADORNO (Aicraft Design and nOise RatiNg for regiOnal aicraft)

Reporting period: 2018-11-01 to 2020-04-30

"A major challenge in the transport sector is to make economic growth compatible with sustainability and environmental constraints, while remaining competitive and innovative. In this sense, the Horizon 2020 period will be decisive for delivering the innovations defining this century's fleet and its environmental footprint. The aeronautical sector, through CleanSky2 (CS2), will be a critical player in contributing to one of the key Societal Challenge, ""smart, green and integrated transport"", defined in Horizon 2020 (H2020).
To achieve the ACARE SRIA emissions objectives and to go beyond, the engine ITDs play a priority role. As a matter of fact, among CS2 programme all the engine ITD demonstrators and technologies are the most important contributors to the emissions reduction aimed in H2020, with their benefit ranging between 20% and 25% vs baseline 2000 references.
The innovative engine technologies must be investigated by integrating them into a concept aircraft, to assess the realistic environmental impact. In general, the development of aeronautical products is a complex multidisciplinary process with requirements and constraints on the air transport system as a whole, i.e. the aircraft, and all the individual components to be produced, as the engine. A major issue, which has prevented aircraft manufacturers from implementing efficient and cost-effective design processes, is the loose integration of engine models into iterative aircraft design workflows.
The high-level objective of ADORNO is to allow a fast and reliable estimation of aircraft environmental noise and pollutant emissions at different mission phases, through the implementation of a flexible aircraft model which provides requirements for the engine platform in terms of thrusts and offtakes at different power settings and flight conditions. The development of an aircraft model with an integrated engine interface is the key enabler to deliver innovative and constantly evolving aircraft products in a time and cost-efficient manner, and also guarantees the interactions between engine and A/C design in the framework of CS2.
The aim of the ADORNO project is to reduce design times, both in the conceptual and preliminary phases, to enable TM to maintain and strengthen European competitiveness in the short/medium range market."
Work performed so far has covered all the four work packages (WP) of the project: a) WP1, Management, Dissemination and Exploitation; b) WP2, Aircraft Design and Emissions Assessment; c) Noise and Emissions Software; d) Advanced Trade Factor Methodology.

WP2 related activities have been focused on the definition of year 2014 reference aircraft models and their analysis. One deliverable (D2.1) and five milestones (MS1-5) have been completed during the covered period.
D2.1 related activities have been firstly dedicated to the definition of a set of top-level aircraft requirements (TLAR) to be used in order to drive the design process of two Y2014 reference configurations: an underwing-mounted engines configuration (UM) and a rear-mounted engines configuration (RM). Airbus A220-300 has been chosen as the reference aircraft model to derive the set of TLAR to carry out design activities (MS1).
In order to perform design and multi-disciplinary analyses for the two above-mentioned configurations, a framework of tools and modules has been put in place, relying on: a) an INITIALIZER, providing a baseline statistical aircraft model, sized in order to comply with the requests derived from the assumed set of TLAR; b) a DOE (Design of Experiment) module, allowing to generate, starting from a baseline aircraft model, a population of aircraft to be analysed through a multi-disciplinary approach; c) a CORE, embedding the tools and the calculators used to perform multi-disciplinary analyses; d) an OPTIMIZER, allowing to select a set or one optimum aircraft.
This framework has been used to analyse both UM and RM configurations and has produced the final reference optimum aircraft models (MS2-4) to be used throughout the project as a term of comparison for the target Y2025+ UM and RM configurations. In this sense, work has been carried out to define the airframe technologies to be implemented on the reference aircraft to fulfil CS2 objectives (MS5).

WP3 activities have been centred on the development of the Noise and Emissions tool to be used within the analysis framework described above. An embryonic version of the Noise emissions software (ATTILA) has been used to carry out the analyses for D2.1. A first draft for deliverable D3.1 has helped defining the initial state of the software in terms of implemented methodologies. The final document, which is next to be delivered, will include a more detailed description of the software in terms of data management and architecture, as well as an overview of the additional methodologies that will be implemented during the project, in order to account for the requests of the Topic Manager.

WP4 addresses the development of an advanced trade factor methodology. MS14 is currently undergoing, and will allow to generate a first set of fuel burn trade factors for weight, drag and fuel consumption.
The ADORNO project aims at several ambitious achievements, to go beyond the present state of the art in terms of Aircraft System Chain (ASC).
Since engine integration is crucial to reduce time-to-convergence of the entire design process, the framework built for the ADORNO project aims at taking into account engine architecture together with airframe and systems layout till the preliminary design stages. Within the ADORNO design and analysis framework, an engine deck (i.e. a data set for engine performance) can be currently easily imported and exported in several commonly used data formats.
Environmental noise is an increasingly challenging topic not only from the aircraft certification point of view, but also from local authorities, which often require different acoustic indicators to be addressed too. The noise tool developed in the context of the ADORNO project aims at overcoming all these issues, coming as stand-alone application, enabling noise estimations by managing a reasonable amount of input data, allowing to manage user-defined noise metrics and being easy to integrate with other software.
Emissions is another increasingly demanding topic in aerospace industry. The analysis framework put in place for the ADORNO project allows, thanks to a dedicated tool for emissions estimation, to predict pollutant emissions with few inputs required and is easily customizable by users.
The above-mentioned achievements will for sure contribute to the expected impacts requested in the CS2 work program. In fact, the project will provide technology solutions to address relevant industrial challenges. ADORNO will contribute to emissions reduction goals by using integrated tools for reliable prediction of environmental impact starting from the conceptual and preliminary design phases, making possible to exceed ACARE 2020 environmental targets exploiting an aircraft-engine design optimization. In addition, the exploitation of the ADORNO framework will imply an increased competitiveness of engine manufacturers due to a more efficient design process with a consequent lower time-to-market. Since developing innovations meeting the needs of the European and global markets, the ADORNO project can attract a large attention of the overall aeronautical sector.
Optimized RM reference configuration - Noise certification analysis
Optimized UM and RM reference configurations
ADORNO design and analysis framework
UM reference configuration - Block fuel and EPNL response surfaces