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Under the leadership of Broetje-Automation (Rastede, Germany), an industrial consortium comprising German technology companies and universities are working with Boeing Germany to automate the assembly of future aircraft generations. Known as “SHILA” (standing for “shimless assembly,”) the project aims to lay a foundation for future aircraft programs and enable significant efficiency gains for a more sustainable, climate-friendly aviation industry. The consortium expects to reduce manufacturing times by up to 75% and manufacturing costs by up to 25% compared to the conventional assembly process.

“In the project, high-precision measurement systems are combined with innovative process technology and end-to-end digitization in such a way that manual compensation of component tolerances (so-called “shimming”) can be dispensed in the future, while at the same time enabling precision-fit, force-controlled joining,” Markus Stoyke, SHILA project manager at Broetje-Automation, explains. The company is an integrator of assembly technologies and specializes in automated assembly processes in the aerospace industry.

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As SHILA is targeting upcoming aircraft programs, the capability to deal with composites is essential, as these programs most likely use composites to a large extent. With material behavior an important factor to be studied, the company will likely evaluate precision-fit, force-controlled joining processes for carbon fiber-reinforced polymer (CRFP)/metal material combinations.

The project, which is being carried out under the aerospace research program of the German Federal Ministry of Economics and Climate Action (BMWK), involves an industrial consortium comprising Boeing, Broetje-Automation, 3D.aero (Hamburg, Germany) and KEBA (Linz, Austria), with scientific support from the Institute of Production Management at the Technical University of Hamburg-Harburg and the WZL Machine Tool Laboratory at RWTH Aachen University, to prepare joining and assembly processes in aviation for future aircraft programs.

3D.aero is contributing state-of-the-art technologies to the project, including high-precision component measurement. In addition to industrial automation solutions in the field of quality assurance, the company offers optical sensor systems for 3D component measurement and inspection.

For high-precision component processing, KEBA Industrial Automation is using the newly developed “LeviSpin” in the SHILA project. LeviSpin is a drilling spindle with magnetic bearings that enables vibration-supported machining, thus enabling increased productivity with significantly improved quality. At the same time, quality-relevant part-specific process data is generated, which can be further processed as part of the digital twin.

“We are pleased to be working together with industrial partners such as Broetje-Automation, the German government and numerous research institutes throughout Germany to research the future of our industry and to develop groundbreaking new technologies,” Dr. Michael Haidinger, president Boeing Germany, says. “We would like to thank Dr. Christmann [the German government’s aerospace coordinator] and the Federal Ministry for Economic Affairs and Energy for the successful cooperation in the aeronautical research programs over the past few years.”