Duplex tab exhaust nozzle
First Claim
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1. An exhaust nozzle comprising a conical duct terminating in an annular outlet including a row of duplex tabs having compound radial and circumferential aft inclination from root to apex and between forward and aft edges with a diverging common center slot circumferentially therebetween.
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Abstract
An exhaust nozzle includes a conical duct terminating in an annular outlet. A row of vortex generating duplex tabs are mounted in the outlet. The tabs have compound radial and circumferential aft inclination inside the outlet for generating streamwise vortices for attenuating exhaust noise while reducing performance loss.
51 Citations
30 Claims
- 1. An exhaust nozzle comprising a conical duct terminating in an annular outlet including a row of duplex tabs having compound radial and circumferential aft inclination from root to apex and between forward and aft edges with a diverging common center slot circumferentially therebetween.
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11. An exhaust nozzle comprising:
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a conical exhaust duct having radially inner and outer skins terminating at a trailing edge surrounding an outlet for discharging exhaust flow; and a row of adjoining duplex tabs having a common slot therebetween, with each tab inclined radially from said duct at an acute radial inclination angle at said outlet around said trailing edge and said slot diverges radially from said duct, wherein said duplex tabs are arranged in pairs, each pair having a collective tab width, and said tab pairs are circumferentially spaced apart from each other at a greater spacing than said tab width, and wherein said duplex tabs are inclined both radially aft toward said outlet and circumferentially forward from said trailing edge. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification