Reduced radar cross section exhaust nozzle assembly

Power plants – Reaction motor – Particular exhaust nozzle feature

Reexamination Certificate

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Details

C060S770000, C239S265390, C239S265190

Reexamination Certificate

active

07578133

ABSTRACT:
An exhaust nozzle assembly includes a plurality of interfitting flap assemblies that are moveable between a maximum area ratio and a minimum area ratio. Each of the pluralities of flap assemblies includes a slot and a wing. The wing fits within an adjacent slot of an adjacent flap assembly. Each of the flap assemblies includes a divergent element that provides a specific geometric shape forming the trailing edge surfaces. The flap element is attached to the divergent element and extends to a static structure. The flap element and the divergent element combine to form a continuous faceted outer surface of the exhaust nozzle assembly substantially void of gaps throughout the range of motion between the maximum and minimum area ratios.

REFERENCES:
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patent: 5115979 (1992-05-01), Ellerhorst et al.
patent: 5485959 (1996-01-01), Wood et al.
patent: 5680755 (1997-10-01), Hauer et al.
patent: 5713522 (1998-02-01), Lundberg
patent: 5833139 (1998-11-01), Sondee et al.
patent: 5839663 (1998-11-01), Broadway et al.
patent: 5893518 (1999-04-01), Bruchez et al.
patent: 7240493 (2007-07-01), Seiner
patent: 2005/0235628 (2005-10-01), Senile

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