Turbofan exhaust system

Details Turbofan exhaust system Turbofan exhaust system

2007-01-26

2010-12-07

Kim, Ted (Department: 3741)

Power plants

Reaction motor

Interrelated reaction motors

C060S770000, C239S265250

Reexamination Certificate

active

07845156

ABSTRACT:
A turbofan exhaust system includes at least one exhaust nozzle with a trailing edge having an upper edge, a lower edge, an inner lateral edge-and an outer lateral edge. The upper edge is upstream with respect to the lower edge. The outer lateral edge of the exhaust nozzle is also upstream of the inner lateral edge. This arrangement makes it possible to reduce the noise perceived in the cabin of the aircraft at the same time as the noise perceived on the ground.

REFERENCES:
patent: 3568792 (1971-03-01), Urquhart
patent: 3997132 (1976-12-01), Erwin
patent: 4280587 (1981-07-01), Bhat
patent: 6415598 (2002-07-01), Pinker
patent: 2004/0140397 (2004-07-01), Dun
patent: 2005/0223691 (2005-10-01), Viswanathan
patent: 1 104 847 (2001-06-01), None
patent: 2 294 085 (1976-07-01), None
patent: 2 740 832 (1997-05-01), None
K. Viswanathan, “An Elegant Concept for Reduction of Jet Noise from Turbofan Engines”, American Institute of Aeronautics and Astronautics Inc., XP-009073325, May 12, 2004, pp. 1970-1983.

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