Fraunhofer Develops AR Glasses for Aircraft Maintenance

The Fraunhofer FKIE research institute has developed solutions to enhance aircraft maintenance by utilizing augmented reality (AR) smart glasses. This technology aims to simplify and improve the accuracy of aircraft repair and maintenance tasks by providing mechanics with virtual 3D instructions and tools directly in their field of vision.

Modern aircraft complexity, such as the Airbus A400M with an engine composed of over 10,000 parts, makes their servicing a demanding process. Traditional paper manuals are cumbersome, especially in confined spaces, and two-dimensional depictions can lead to errors. AR glasses can overlay 3D models, virtual tools, and instructions, improving clarity and reducing the risk of mistakes.

In the "Ariel" project, the institute tested two use cases: the installation of a display unit in the cockpit and the maintenance of a battery. The developed prototypes operated on Microsoft HoloLens 2 and Epson Moverio BT-300 AR glasses. Key focus areas included designing suitable 3D information visualizations and interaction techniques such as gesture, gaze, and voice control.

Five aircraft mechanics participated in the tests, which evaluated usability, user experience, and comfort. The research and development by Fraunhofer FKIE were funded by the German Federal Office of Bundeswehr Equipment, Information Technology and In-Service Support (BAAINBw).

The technology also allows for interactive interfaces, such as a gesture-controlled menu for managing global system properties, making the maintenance process smoother and more efficient.