Power plants – Reaction motor – Interrelated reaction motors
Reexamination Certificate
2006-01-10
2006-01-10
Casaregola, Louis J (Department: 3746)
Power plants
Reaction motor
Interrelated reaction motors
C060S711000, C239S265330
Reexamination Certificate
active
06983588
ABSTRACT:
A turbofan exhaust nozzle includes a fan duct defined between a fan nacelle and core engine cowling. The duct includes an arcuate outlet at the trailing edge of the nacelle. A movable flap is disposed in a minor portion of the fan duct, with a remaining major portion of the fan duct having a constant flow area. The flap may be moved between stowed and deployed positions to locally decrease flow area inside the duct for noise attenuation.
REFERENCES:
patent: 3892358 (1975-07-01), Gissien
patent: 3967443 (1976-07-01), McMurtry
patent: 4112677 (1978-09-01), Kasmarik
patent: 4278220 (1981-07-01), Johnston et al.
patent: 4638631 (1987-01-01), Debeneix et al.
patent: 4793134 (1988-12-01), Coplin et al.
patent: 5853148 (1998-12-01), Standish et al.
Casaregola Louis J
Conte Francis L.
The NORDAM Group, Inc.
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