Finite Element Calculations of the Interior Noise of the Saab 340 Aircraft The Aeronautical Research Institute of Sweden, FFA

Format:

Conference/Event

Author/Creator:

Göransson, Peter, author.

Conference Name:

General Aviation Aircraft Meeting and Exposition (1989-04-11 : Wichita, Kansas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1989

Summary:

The complex behaviour of a fuselage-cavity system in a modern propeller aircraft has been analysed with the finite element method. In the analysis the interaction between the fluid and the structure has been taken into account in a physical coupling formulation. The results obtained show that, at some frequencies, this coupling is very important for the vibro-acoustic system response.The eigenfrequencies and eigenmodes of the fuselage-cavity found in the analysis are compared with experimental modal analysis on a mock-up of the aircraft. The agreement is very good from 10-130 Hz. Especially the modes with strong coupling are well pronounced in the experiments

Notes:

Vendor supplied data

Publisher Number:

891081

Access Restriction:

Restricted for use by site license