Noise-reducing mobile guide tube on the P8 research and development test bench
A mobile noise-reducing guide tube is used in tests on the P8 research and development test bench. Water is injected through the nozzles at the inlet of the guide tube, which slows down the sound.
Rockets do not take off silently and their noise is of course also generated where their engines are tested on the ground. We make every effort to keep noise exposure as low as possible for our neighboring communities. DLR engineers are constantly improving the technology of the test stands to make them even more resource-efficient and lower in emissions. Specially developed components for noise reduction are tested in the research and technology test benches. The challenge lies in making this technology usable for large test benches with more powerful engines. The noise-reducing guide tube on the P8 research and development test bench shows in tests that noise can be reduced by injecting water. This minimizes and ideally avoids the effects of noise. In the future, operation will therefore become even quieter – thanks to more efficient designs, new materials and intelligent drive solutions.
