Students conduct research on how to reduce the noise level of airplanes.

To find out how aircraft interiors can be made quieter, students in the 9th and 10th grades at the Lise-Meitner-Gymnasium in Hamburg-Osdorf have developed an acoustic stand. This can be used to test the permeability of insulation materials to different sound frequencies. The eleven students presented the test stand to DLR_School_Lab at the Technical University of Hamburg at a ceremony. The project was developed by the Lise-Meitner-Gymnasium in cooperation with the TU Hamburg, the DLR-School_Lab and Airbus. The lüttIng-Schüler-Technik-Akademie actively supported the school class in the implementation with financial support of 4,000 euros and project management training.

"The highly motivated and committed students have done an outstanding job. We are looking forward to presenting the test stand to many school classes now and thus getting young people excited about technical topics," says founder and initiator of DLR_School_Lab Professor Wolfgang Mackens. The project already started in 2019, but could only be handed over now due to the Corona pandemic.

Aircraft insulation material put to the test

The students spent several months working on their acoustic stand and the result is impressive: In a fifteen-centimeter-thick, sound-insulated and rollable case, they installed a self-designed loudspeaker and a recording unit on opposite sides. The space between them leaves room for the damping materials used in aircraft construction, which can then be tested for their sound permeability. The new test stand complements the existing test setup on a replica aircraft wall.

About the Lise-Meitner-Gymnasium

The LMG was able to make use of existing know-how in the field of synthesizer and sound technology for the project. Project leader and teacher Marc Schliephake: "We are happy to complete the project so successfully and to finally hand over our test stand. The commitment of everyone involved was great and we look forward to more future projects together."  At the Lise-Meitner-Gymnasium, technology projects are carried out in the areas of music technology, air and aviation and 3D printing as part of the mathematics and science profile classes already established in the middle school.

The DLR_School_Lab

DLR_School_Lab sees itself as a practical, extracurricular place of learning. In cooperation with scientists and students, school classes can use the laboratories for experimentation and research. The focus is on aviation and shipping. Both parts of the lab are closely related to Hamburg's economy, as Hamburg offers many interesting professions in both areas.

via: TUHH