CPC F02C 7/047 (2013.01) [F01D 25/02 (2013.01); F01D 25/10 (2013.01); F05D 2220/323 (2013.01); F05D 2260/213 (2013.01)] | 20 Claims |
1. An engine anti-ice (EAI) swirl system for an aircraft engine, the EAI swirl system comprising:
a nacelle including a first nacelle section exposed to ambient environment and facing an oncoming airstream when an aircraft powered by the engine is in flight, wherein the first nacelle section defines a circumferential D-duct; and
a nozzle configured to generate a pulsating jet of heated fluid and inject into and circulate through the D-duct an unsteady flow of the heated fluid, wherein the unsteady flow mixes the heated fluid within the D-duct to generate a uniform temperature distribution to counter origination of hot and cold spots within the D-duct and minimize likelihood of icing of the first nacelle section when the aircraft is in flight.
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