A new aircraft engine noise meter, an interferometer, has been developed at Perm National Research Polytechnic University (PNRPU). This was reported by the university's press service.
The new interferometer works like a stethoscope, allowing sound-absorbing materials to be checked on-site without the need to dismantle engine parts.
The seismic-resistant device with an internal diameter of 50 mm weighs only 0.65 kg, while a similar device with a diameter of only 30 mm weighs 4.20 kg. The uniqueness of the new interferometer lies in its ability to operate in extremely loud sound conditions (up to 160 dB) and have a wide frequency range.
The device includes high-precision microphones, a powerful speaker, and a mini-computer for data processing. This allows diagnostics to be carried out in real operating conditions.
The prototype has been successfully tested on experimental samples. By the end of the year, we plan to patent the technology, after which we will focus on optimizing the device's weight and size characteristics.
The development opens up opportunities for airlines to quickly monitor the effectiveness of noise-absorbing elements in real time and comply with international standards, as well as to regularly monitor the noise characteristics of aircraft.
Earlier, www1.ru reported that new, fully domestic proximity sensors for aircraft landing gear systems, doors, and wing skew systems were created in Orel.
