Aeroacoustics Development at Pininfarina

970402

02/24/1997

Event
SAE International Congress and Exposition
Authors Abstract
Content
This paper reports recent developments made at Pininfarina in the aeroacoustic field with the aim of reducing the background noise in the test section of its full scale wind tunnel as well as for improving the measuring techniques which are used during the acoustic development of new cars.
The first part of the paper describes the changes made to the wind tunnel drive-line, i.e. new motor, new low-noise fan and new acoustic treatments.
The new background noise levels are reported and compared with the old values, already published in ref. (2).
The second part describes the three acoustic techniques (acoustic intensimetry, acoustic holography and acoustic mirror) which have been developed or improved in the meantime, to measure the exterior noise of new cars from the first stage of their design.
Examples of results of these measurements are reported as well as an indication of the capabilities and limitations of each technique.
Meta TagsDetails
DOI
https://doi.org/10.4271/970402
Pages
27
Citation
Cogotti, A., "Aeroacoustics Development at Pininfarina," SAE Technical Paper 970402, 1997, https://doi.org/10.4271/970402.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
970402
Content Type
Technical Paper
Language
English