US 9,810,082 B2
Gas turbine engine for aircraft engine
Paolo Calza, Arco (IT)
Assigned to GE AVIO S.R.L., Rivalta di Torino (IT)
Appl. No. 14/236,762
Filed by Paolo Calza, Arco (IT)
PCT Filed Aug. 3, 2012, PCT No. PCT/IB2012/053997
§ 371(c)(1), (2), (4) Date Sep. 19, 2014,
PCT Pub. No. WO2013/018073, PCT Pub. Date Feb. 7, 2013.
Claims priority of application No. TO2011A0728 (IT), filed on Aug. 4, 2011.
Prior Publication US 2015/0078908 A1, Mar. 19, 2015
Int. Cl. F01D 9/04 (2006.01); F01D 25/06 (2006.01); F01D 5/14 (2006.01)
CPC F01D 9/041 (2013.01) [F01D 5/14 (2013.01); F01D 9/04 (2013.01); F01D 25/06 (2013.01); F05D 2240/12 (2013.01); F05D 2240/129 (2013.01); F05D 2260/96 (2013.01); Y02T 50/671 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A stator for a gas turbine of an aircraft engine, the stator comprising:
a blade array comprising a plurality of blades constituted by a series of first blades and a series of second blades, said first blades having a different geometry from said second blades,
said first and second blades are arranged to alternate a single first blade with a single second blade for the entire circumference of the stator,
said blade array is defined by a plurality of sectors, each comprising:
i) an inner curved portion;
ii) an outer curved portion;
iii) at least one of said first blades and at least one of said second blades; each of said plurality of sectors is defined by a body made in one piece, wherein the inner curved portions of adjacent sectors form an inner annular end-wall, and wherein the outer curved portions of adjacent sectors form an outer annular end-wall,
each of said first blades having a first radial generatrix and each of said second blades having a second radial generatrix, said first radial generatrix comprising at least one first curved segment and at least one first straight segment, and said second radial generatrix comprising at least one second curved segment and at least one second straight segment, wherein said first radial generatrix and said second radial generatrix are different from each other.