Interior Noise Analysis and Control for Light Aircraft NASA Langley Research Center

Format:

Conference/Event

Author/Creator:

Mixson, John S., author.

Conference Name:

National Business Aircraft Meeting and Engineering Display (1977-03-29 : Wichita, Kansas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1977

Summary:

This paper describes experimental and analytical studies of the interior noise of twin-engine, propeller-driven, light aircraft. Experimental results indicate that interior noise levels due to propeller noise can be reduced by reduction of engine rpm at constant airspeed (about 3 dB), by synchronization of the twin engines/propellers (up to 12 dB), and by increasing the distances from propeller tip to fuselage. The analytical model described uses modal methods and incorporates the flat-sided geometrical and skin-stringer structural features of light aircraft. Initial results show good agreement with measured noise transmitted into a rectangular box through a flat panel

Notes:

Vendor supplied data

Publisher Number:

770445

Access Restriction:

Restricted for use by site license