Damped combustor cowl structure

Details Damped combustor cowl structure Damped combustor cowl structure

F - Mech Eng,Light,Heat,Weapons

23

R

F23R 3/04 (2006.01) F23R 3/00 (2006.01) F23R 3/60 (2006.01)

Patent

CA 2062906

13DV10386 ABSTRACT OF THE DISCLOSURE A friction-damped combustor cowl is formed of first and second plies of sheet material of mating, generally annular configuration defining a central cowl axis and of axially elongated and aerodynamically contoured configuration have respective fore end portions which are curled to form a cowl leading edge of arcuate cross section and corresponding fore edges which are integrally joined, and respective aft and portions which define a cowl trailing edge and corresponding aft edges which are integrally joined. Surface contact of the contiguous surfaces of the laminated and mating first and second plies provides vibration damping under normal operating conditions in an alternative and combustor cowl, a spring element is received and maintained under compression within the curled loading edge of the combustor cowl and maintains a resilient biasing force maintaining surface contact between the spring element and the interior surface of the curled leading edge, thereby maintaining frictional surface contact and requisite vibration damping under normal operating conditions.

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