Page 12 - ILK Research Report 2020

is difficult to communicate. Successful implementation is in Science and Industry in Saxony (LightSax)" was imple-
therefore only possible if everyone works 'hand-in-hand' mented with the participation of the Institute of Lightweight
to achieve an ecological result. Training and continuing Structures at TU Chemnitz, the Institute of Lightweight En-
education programs must therefore be expanded as a gineering and Polymer Technology at TU Dresden and the
matter of urgency. Special consideration must be given Institute of Metal Forming at TU Freiberg taking on the role
to recyclability, digitalization for production and use in of coordinator. The Leichtbau-Allianz Sachsen supported
the construction industry for building, civil engineering the project in its organizational activities.
and bridge building, the future market with the highest
global growth potential."

Background: "Excellence in lightweight engineering"
master plan Masterplan Excellence in
Lightweight Engineering
The master plan, which was presented in Freiberg on
October 12, 2020, was developed by scientists from the
technical universities in Chemnitz, Dresden and Freiberg. https://leichtbau-allianz-sachsen.de/lightsax/
The joint project "Potentials of Lightweight Engineering

Light, quiet aviation – project launch of the FLIER joint project

As part of the joint project "Flexible Wall Struc-
tures for Acoustic Liners" (FLIER), employees of
the Technische Universität Berlin (Institut für
Strömungsmechanik und Technische Akustik,
FG Turbomaschinen- und Thermoakustik and
FG Technische Akustik), the Brandenburgische
Technische Universität Cottbus-Senftenberg
(Lehrstuhl für Flug-Triebwerksdesign) and the
ILK are researching and developing noise-ab-
sorbing plastic structures for use in aviation.

Currently, liner structures based on the well-
known Helmholtz resonator principle are used
in engines for noise damping and are thus pri-
marily effective in a narrow frequency range.
Future generations of engines will be charac-
terized above all by larger diameters combined
with reduced length, and will therefore have
comparatively less usable surface area for noise damping joint project is to create a comprehensive design concept,
measures. The aim of the FLIER project is to use new liner develop the manufacturing process, implement it in terms
technologies both to increase their acoustic effectiveness of production technology and carry out functional tests
and to greatly extend the effective frequency range. on a laboratory scale.

In the previous project, LAKS, the first test specimens
were designed and manufactured to demonstrate the
basic effectiveness of the new liner technology. In the re- The project is funded under the Fed-
cently approved follow-up project FLIER, the ILK will focus eral Republic of Germany's aeronau-
on developing suitable manufacturing strategies for the tics research program (LuFo VI-1) for
production of curved or curvable liners. The aim of the 3 years until 2023.

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