Developments in acoustic technology applicable to advanced supersonic cruise aircraft, particularly those which relate to jet noise and its suppression are reviewed. The noise reducing potential of high radius ratio, inverted velocity profile coannular jets is demonstrated by model scale results from a wide range of nozzle geometries, including some simulated flight cases. These results were verified statistically at large scale on a variable cycle engine (VCE) testbed. A preliminary assessment of potential VCE noise sources such as fan and core noise is made, based on the testbed data. Recent advances in the understanding of flight effects are reviewed. The status of component noise prediction methods is assessed on the basis of recent test data, and the remaining problem areas are outlined.
Status of noise technology for advanced supersonic cruise aircraft
1980-03-01
Conference paper
No indication
English
Advanced supersonic cruise aircraft technology
NTRS | 1977
|Progress in supersonic cruise aircraft technology
TIBKAT | 1978
|Progress in supersonic cruise aircraft technology
NTRS | 1978
|