Euro Researchers Measure Noise Inside Engine

Aviation International News » May 2013
May 6, 2013, 2:10 AM

Researchers at the German Aerospace Center (DLR), working at Turbomeca’s test facilities in Bordes, France, have managed to measure the noise inside a helicopter engine. They used new hot-gas microphone probes in an environment of high pressure (up to 12 bar) and high temperature (up to 1,200 degrees C). The microphones were installed at various places inside the engine and around the exhaust. Their signals were recorded simultaneously. Analysis of the noise field enabled the DLR to explain how noise is generated and how sound propagates. Ultimately, the results are expected to yield design improvements intended to reduce noise.

Share this...

Please Register

In order to leave comments you will now need to be a registered user. This change in policy is to protect our site from an increased number of spam comments. Additionally, in the near future you will be able to better manage your AIN subscriptions via this registration system. If you already have an account, click here to log in. Otherwise, click here to register.

 
X