EASN Research Webinars (ERW) schedule

April schedule

5th APRIL 2024 - 14.00 (CET)
Michael Weigand
"Safety of helicopter propulsion systems"

Helicopter drivetrain components (transmissions and shafts) are a very important part of a helicopter. The drivetrain must not fail under all operating conditions to ensure autorotation capability in every moment of the flight. Therefore, helicopter transmissions are specified in the Certification Specifications (CS) of EASA, especially in CS-27 (small rotorcraft) and CS-29 (large rotorcraft).

However, especially between 2009 and 2016 several incidents happened with about 50 people killed in North Sea offshore operation, caused by defects and damages in the Main Gearbox. Incidents also happened e.g. in 2022.

TU Vienna is active in the field of rotorcraft safety and improved gearbox components and contributes regularly to the European Rotorcraft Symposium of EASA. The presentation will give an overview of the activities at TU Vienna.

The presentation will give an overview of the activities of TU Vienna with regard to the mentioned incidents. As EASA has recently finished a project about Improved Main Gearbox (MGB) safety this project will also be discussed in the presentation.

Institute of Engineering Design and Product Development E307,
Research Unit Machine Elements and Transmissions for Aviation
TU Wien, Vienna

Michael Weigand
19th APRIL 2024 - 14.00 (CET)
Sergio Tavares
"Damage tolerant design in the age of AI"

While indispensable for aircraft structural design and residual strength assessment, numerical modeling tools face challenges in accurately replicating real-world behavior and creating precise digital twins due to factors like material property variations, manufacturing-induced deviations, loading conditions, among others. Machine learning techniques, including physics-informed neural networks, enable the handling of diverse uncertainties and the improvement of calibration and validation for numerical models. This is achieved by combining experimental inputs with simulations through continuous updating processes that refine digital twins, enhancing their accuracy in predicting structural behavior and performance throughout an aircraft's life cycle. These refined models could enable real-time monitoring and improve damage assessment, supporting decision-making in diverse contexts and contributing to the assurance of structural integrity and safety in aircraft structures throughout their operational life.

TEMA - Centre for Mechanical Technology and
Automation, Department of Mechanical Engineering,
University of Aveiro, Portugal

Sergio Tavares

Albertino Arteiro
"Failure modelling and characterisation of composite aerostructure"

Even though the use of carbon fibre reinforced polymers (CFRPs) in airframes has increased drastically in the last few years, large safety margins are still used, limiting the full exploitation of the benefits of CFRPs. The high susceptibility to subcritical damage mechanisms and the lack of knowledge and predictive capability of the mechanical response and of the complex failure behaviour of composite materials are among the main reasons. This presentation will address some of the most recent contributions on composites failure modelling and characterisation with an eye on the certification by analysis of (disruptive) composite aerostructures.

Materials and Technological Processes Group of the Department of Mechanical Engineering (DEMec) of the Faculty of Engineering - University of Porto, Portugal

Albertino Arteiro

March schedule

22nd MARCH 2024 - 14.00 (CET)
Ivo Jebáček
"Key results obtained with dedicated Aircraft Testing Facility at Brno Technical University"

The presentation focused on key project results obtained through testing activities at the Brno University of Technology Aircraft Testing Facility, especially in the field of small aircraft and space research. The interesting spacecraft test, as well as basic research of thermal characteristics for space applications, were mentioned. The presented results underlined the importance of excellent research infrastructures operating in an academic environment and their impact on the aeronautical industry in the Czech Republic and beyond.

Faculty of Mechanical Engineering
Dept. of Aerospace Technology

Ivo Jebáček

Francky Callewaert
Special Feature: "ERA Action 12: a Pilot initiative in Aviation Research and Technology Infrastructures (RTI)"

Aircraft technologies, including demonstrators, built under various EU projects, incl the Clean Sky and Aviation Joint Undertaking partnerships, require specific test facilities to improve their technological maturity, typically from TRL 6 to TRL 9, and for certification purposes before they are launched on the market. A discussion was initiated on how to address future key needs for improving (or building new) aeronautical research and technology infrastructures (e.g. wind tunnels, engine test beds, etc.) to upgrade them for disruptive technologies (e.g. hydrogen/electric propulsion systems) and accelerate market introduction. The presentation reflects on the discussions within the stakeholder groups.

European Commission,
“Future low emissions Industries” unit of DG RTD

Francky Callewaert
8th MARCH 2024 - 14.00 (CET)
Helge Pfeiffer
"Structural Health Monitoring in aeronautics between the academic and industrial perspective"

This presentation provided a very special insight into the relationship between academic and industrial perspectives when maintenance, especially structural health monitoring, was concerned. It dealt with questions of the optimal balance between scientific research interests and the corporate perspective, but also with very practical issues.

The presentation concluded with some selected examples of how monitoring and advanced inspection could work in an industrial environment. These included the monitoring of corrosive liquids in aircraft, the detection of ice in fuel tanks, and the optical quantification of damage in dents.

University of Leuven, Department of Materials Engineering,
Group of Nondestructive testing and Materials Characterization

Helge Pfeiffer

* The schedule will be updated with new entries