Aerofoils

Details Aerofoils Aerofoils

2007-02-20

2010-12-14

Kershteyn, Igor (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

Changing state mass within or fluid flow through working...

C415S115000

Reexamination Certificate

active

07850428

ABSTRACT:
An aerofoil20for a gas turbine engine includes a root portion22, a tip portion24located radially outwardly of the root portion22, leading and trailing edges26, 28extending between the root portion22and the tip portion24and an internal cooling passage34. The aerofoil20includes a plurality of cooling fluid discharge apertures36extending between the root portion22and the tip portion24in a trailing edge region28ato discharge cooling fluid from the internal cooling passage34to an outer surface31of the aerofoil in the trailing edge region28aand thereby provide a cooling film in the trailing edge region28a. The cooling fluid discharge apertures36are arranged so that the flow rate of the cooling fluid discharged from the internal cooling passage34to the outer surface trailing edge region28avaries between the root portion22and the tip portion24.

REFERENCES:
patent: 4229140 (1980-10-01), Scott
patent: 5243759 (1993-09-01), Brown et al.
patent: 5378108 (1995-01-01), Zelesky
patent: 6609891 (2003-08-01), Leeke et al.
patent: 2005/0191167 (2005-09-01), Mongillo et al.
patent: 1 288 436 (2004-04-01), None

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