Aeroacoustics of Advanced STOVL Aircraft Plumes Lockheed Aeronautical Systems Georgia Div. Marietta, GA

Format:

Conference/Event

Author/Creator:

Ahuja, K. K., author.

Conference Name:

SAE International Powered Lift Conference and Exposition (1987-12-07 : Santa Clara, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1987

Summary:

This paper summarizes a basic and well-controlled experimental study involving flow visualization and noise measurements to define the acoustic and flow fields of single plumes impinging on a simulated ground plane. The flow visualization was made by strobing a laser light source at the discrete frequencies generated by the impingement of the jets and measured by a nearfield microphone. This enabled visualization of instability waves generated by the interaction between the plumes and the sound generated during impingement, and also by dynamic coupling between the two plumes. These data were acquired as a function of distance between the ground and the nozzle exit. Nearfield acoustic data were acquired simultaneously. Data for nozzle diameters of 0.265 in. and 0.4 inches are described. For selected nozzles, effects of exit boundary layer characteristics and nozzle protrusion through a simulated aircraft body are also presented

Notes:

Vendor supplied data

Publisher Number:

872358

Access Restriction:

Restricted for use by site license