Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Reexamination Certificate
2005-04-08
2008-10-07
Kershteyn, Igor (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
C416S19800R, C416S21300R
Reexamination Certificate
active
07431564
ABSTRACT:
A blisk for use in the turbine section of a gas turbine engine comprises a disk around the circumference of which is disposed a plurality of blades in an annular array. The blades are preferably cast separately and then joined, for example by welding, so that the roots form a continuous ring. The remaining volume of the rotor disk is formed of consolidated metal powder by a hot isostatic process. Extending a short distance above each blade root is a shank carrying a platform and the blade airfoil section. The dimensions of the platforms in the circumferential direction are such that they co-operate to form a plenum chamber encircling the periphery of the rotor disk. The blades are cast with internal cooling passages access to which is gained from the plenum through orifices in the sides of the blade shanks. Thus, in use, cooling air may be passed across at least one face of the blisk into the plenum from where it enters the blade cooling passages.
REFERENCES:
patent: 3588276 (1971-06-01), Jubb
patent: 3606573 (1971-09-01), Emmerson et al.
patent: 4096615 (1978-06-01), Cross
patent: 4152816 (1979-05-01), Ewing et al.
patent: 4270256 (1981-06-01), Ewing
patent: 4767274 (1988-08-01), Walter
patent: 4784573 (1988-11-01), Ress, Jr.
patent: 5273708 (1993-12-01), Freeman
patent: 2 372 784 (2002-09-01), None
patent: A 59-069479 (1984-04-01), None
Kershteyn Igor
Oliff & Berridg,e PLC
Rolls Royce plc
LandOfFree
Turbine blisk does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turbine blisk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbine blisk will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4017727