Ceramic matrix composite capped bolt attachment

Details Ceramic matrix composite capped bolt attachment Ceramic matrix composite capped bolt attachment

2011-06-28

2011-06-28

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Passage or casing attached removable liner or wear member

C415S134000, C415S200000, C415S214100, C029S525020, C029S525110, C029S525120, C029S889200, C403S030000, C060S766000, C060S770000, C060S797000, C411S372600, C411S383000, C411S901000, C411S904000

Reexamination Certificate

active

07967562

ABSTRACT:
A fastener for a turbine engine includes a bolt and a ceramic matrix composite (CMC) cap mechanically secured to the bolt. CMC components are attached to an exhaust nozzle case with the fasteners. The fastener includes a bolt made of metal and having a head. A CMC cap is located on the head of the bolt and secured to the bolt by a mechanical device. The mechanical device allows the CMC cap to have a different thermal expansion than the bolt. The CMC cap also acts as a thermal shield for the bolt, aiding in the reduction of a heat signature of the turbine engine.

REFERENCES:
patent: 1194792 (1916-08-01), Stewart
patent: 4575047 (1986-03-01), Boos et al.
patent: 5133618 (1992-07-01), Mentesh
patent: 5391028 (1995-02-01), Charles
patent: 5497616 (1996-03-01), Roberts
patent: 6302630 (2001-10-01), Grant
patent: 7153054 (2006-12-01), Arbona

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