The nozzles described exhibit a flow field which is supersonic except for the initial flow region, and the secondary mass flow is typically about five percent of the primary core flow. The features to improve the accuracy of the performance calculations are discussed. A special calculation is made to get as realistic a sonic line as possible for this geometry, using an analysis developed by Brown. The mixing between the secondary and core flows is treated to account for entrainment of the secondary flow into core. Both of these phenomena directly affect the pressure distribution on the shroud and therefore, the thrust that the nozzle produces. The importance of using a realistic sonic line and a mixing analysis is stressed.
Coannular supersonic ejector nozzles
1979-09-01
Conference paper
No indication
English
Wind tunnel performance tests of coannular plug nozzles
TIBKAT | 1978
|Wind tunnel performance tests of coannular plug nozzles
NTRS | 1978
|PLIF Investigation of Coannular Supersonic Jets
British Library Conference Proceedings | 1998
|PLIF investigation of coannular supersonic jets
AIAA | 1998
|