Research programs were conducted to investigate experimentally the aeroacoustic characteristics of scale model, inverted-velocity profile coannular nozzles. These programs include studies of unsuppressed configurations with and without center plugs over a variety of radius ratios and area ratios. Also included are suppressed configurations, the effect of ejectors, and some simulated flight effects. Unsuppressed inverted-velocity profile coannular nozzles seem to allow jet mixing noise compliance with present FAR-36 regulations when applied to supersonic cruise aircraft engine cycles. Simulated flight tests suggest that the aeroacoustic benefits of the inverted-velocity profile coannular nozzles would be maintained in flight.
Aeroacoustic studies of coannular nozzles suitable for supersonic cruise aircraft applications
01.01.1976
Aufsatz (Konferenz)
Keine Angabe
Englisch
Coannular supersonic ejector nozzles
NTRS | 1979
|Wind tunnel performance tests of coannular plug nozzles
TIBKAT | 1978
|PLIF Investigation of Coannular Supersonic Jets
British Library Conference Proceedings | 1998
|Wind tunnel performance tests of coannular plug nozzles
NTRS | 1978
|