Turbine blade with carbon nanotube shell

Details Turbine blade with carbon nanotube shell Turbine blade with carbon nanotube shell

2008-10-02

2010-06-15

Kershteyn, Igor (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Formed with main spar

C416S230000, C416S232000, C416S239000, C416S24100B

Reexamination Certificate

active

07736131

ABSTRACT:
A turbine blade for use in a gas turbine engine, where the turbine blade is made from a spar and shell construction in which a thin walled shell is formed from carbon or molybdenum nanotubes arranged in a direction such that the nanotubes are under tension when the blade is rotating in the engine. The carbon nanotubes are allotropes of carbon in which the length to diameter ratio exceeds 1,000,000 in order to produce very high tensile strength, unique electrical properties, and a very efficient conductor of heat. The nanotube shell includes a metal insert having a tear drop shape and the lower end of the shell wraps around the metal insert to form a wedge in which the shell is held in place against radial displacement between the platform and the attachment portion of the blade.

REFERENCES:
patent: 7052234 (2006-05-01), Wells et al.
patent: 7306828 (2007-12-01), Barrera et al.
patent: 7329087 (2008-02-01), Cairo et al.
patent: 7521105 (2009-04-01), Bech et al.

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