Mirjam Snellen appointed as professor ‘Acoustic data analysis and imaging for aviation noise’

News - 15 September 2020

The Faculty of Aerospace Engineering is pleased to announce that Mirjam Snellen has been appointed professor within the 'Aircraft noise and climate effects' (ANCE) section of the Control & Operations Department. Within the section the vision is that a more accurate modelling of the environmental impact of noise and emissions is necessary for making aviation sustainable.

Prof. Mirjam Snellen: "I am, of course, extremely honoured with the appointment. My focus will remain to achieve good models for predicting aircraft noise, controlled and validated through measurements".

Models and measurements
Current aircraft noise models date back to the 1970s. Improved models are needed to achieve quieter aircraft and quieter operations, but certainly also to better monitor the noise of today's aircraft. Measurements are again essential to improve the models. Acoustic images created by measurements with microphone arrays are an important tool (in addition to measurements with a single microphone) because they can quantify the individual sound sources on an aircraft, such as engines and landing gear.

Low-noise aircraft concepts
The use of measurements in aircraft noise monitoring is currently undergoing rapid development. Snellen: "I am also involved in the use of imaging methods in wind tunnel measurements. This often involves investigating possibilities for low-noise aircraft concepts.  ANCE's ambition, and certainly not just mine, is to have our Faculty of Aerospace Engineering play a role in this development so that our knowledge in this field is put to good use". 

Sound of drones
"Another topic is, of course, the sound of drones. Right now there are no good models for this available, even though there is a huge need for them. ANCE's knowledge in the field of measuring and modelling sound, in combination with the MAVlab, gives the faculty a very good starting position in this field to contribute to solutions. Necessary in view of the enormous expected increase in the use of drones".

Read more about Mirjam Snellen here.