Periodic Reporting for period 1 - VENUS (inVestigation of distributEd propulsion Noise and its mitigation through wind tUnnel experiments and numerical Simulations)
Reporting period: 2020-04-01 to 2021-06-30
As a consequence, moved by the motivation to develop new knowledge, and spread it across Europe for the benefit of researchers and aircraft manufacturers, VENUS project will design an Open-Test-Case DEP configuration for a regional aircraft, with a comprehensive experimental campaign to measure aerodynamic and aeroacoustic performance in a wide range of different engine installation configurations and operational conditions, and finally in the improvement of methods for concurrent aerodynamic and aeroacoustic design.
Apart from the increase of propulsion efficiency, the successful adoption of DEP can create indirect benefits in terms of wing structural weight and thus fuel consumption. Fuel and weight reductions are both enablers for cheaper and more affordable flights, with consequent benefits in terms of business and societal impacts.
In terms of noise, it has been shown that a strong benefit can be gained in terms of acoustic performance from DEP configurations against conventional propulsion system, mainly at take-off. On the other hand, due to the lack of extensive acoustic investigations, the annoyance ratings in terms of psychoacoustic cannot be valuated accurately. VENUS will overcome these limitations by providing numerical and experimental data to cover this gap, and thus letting the scientific community improve aeroacoustic studies with the aim to improve comfort of passengers and people living in the neighbourhood of airports. The consequent impact of VENUS on the whole society is then immediate and tangible.
The overall impact of VENUS can thus be far reaching. Creating an experimental data-base under open access aimed at improving knowledge, methods and procedures for more performing DEP configurations will find its implementation in the future commercial regional aircraft with a clear impact on business (cost reduction), environment (greener aircraft in terms of both noise and pollution) and society (safer and more affordable flights).The aim of VENUS is to design an advanced DEP configuration for regional aircraft, and to understand key design features driving the aeroacoustic performance by both numerical and experimental analyses, with the objective to generate high-resolution aerodynamic and aeroacoustic experimental data, to be finally disclosed under open access for the European scientific community.
To reach this macro objective the following activities are planned:
• To develop methods and tools enabling a concurrent aerodynamic and aeroacoustic design of DEP configuration aircraft;
• To design a new regional aircraft configuration, in terms of wing and engines’ installation, to target a DEP which is optimized in terms of aerodynamic and aeroacoustic performance;
• To preliminarily assess possible benefits of different technologies aimed at mitigating noise emissions;
• To design and manufacture a representative test article for WT aeroacoustic tests, able to allow for configuration changes, in terms of engine-wing and engine-engine installation configurations, and to test the selected noise mitigation technologies;
• To instrument test article and WT, and to perform experimental parameterized tests;
• To perform a final experimental-numerical assessment for calibrating and validating numerical models;
• To provide open access to all the produced models, data and documents for other institutions for in-house developed methods validation, with the objective to establish an “open test-case” for the whole European scientific community, unique in the aircraft design landscape.
The work performed is summarized below per WP:
• WP1: The Consortium Agreement has been completed and signed. The Advisory Board (AB) has been defined and an NDA among the partners and the AB members has been signed. The Data Management Plan has been prepared as well as the Dissemination and Exploitation plan.
• WP2: the activity of WP2 has been completed and all the expected Deliverables issued. A critical point was the decision to design a model to be installed horizontally in the wind tunnel.
• WP3 activities have started and are ongoing. No criticalities emerged. A measure has been planned in order to mitigate possible risks related to the propellers phase control and the cooling system of the model engines. More details are given b.
VENUS data and results will have an impact at several levels within three major areas:
• Society and Environment
• A larger impact on innovation and knowledge integration
• Transversal and applicant impact.
The impact will become tangible after the completion of the numerical simulations and the experimental tests foreseen in the second part of the project (during 2022).