US 11,867,065 B2
Blade for a rotating bladed disk for an aircraft turbine engine comprising a sealing lip having an optimized non-constant cross section
Edouard Emmanuel Garreau, Moissy-Cramayel (FR); Josserand Jacques Andre Bassery, Moissy-Cramayel (FR); Lucas Geoffrey Desbois, Moissy-Cramayel (FR); Etienne Leon Francois, Moissy-Cramayel (FR); Samuel Laurent Noel Mathieu Juge, Moissy-Cramayel (FR); Elsa Maxime, Moissy-Cramayel (FR); Ba-Phuc Tang, Moissy-Cramayel (FR); Denis Gabriel Trahot, Moissy-Cramayel (FR); and Thomas Tsassis, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/760,369
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Feb. 11, 2021, PCT No. PCT/FR2021/050247
§ 371(c)(1), (2) Date Aug. 9, 2022,
PCT Pub. No. WO2021/165600, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 2001640 (FR), filed on Feb. 19, 2020.
Prior Publication US 2023/0068236 A1, Mar. 2, 2023
Int. Cl. F01D 11/00 (2006.01)
CPC F01D 11/001 (2013.01) [F05D 2220/323 (2013.01); F05D 2250/141 (2013.01); F05D 2250/711 (2013.01); F05D 2250/712 (2013.01); F05D 2250/713 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A blade for a rotating bladed disk for an aircraft turbine engine, comprising:
a sealing lip extending axially projecting from a body of the blade and having first and second opposite circumferential end surfaces, and one free axial end,
wherein a first cross section of the sealing lip at the free axial end is defined by two concentric circle portions extending from the first circumferential end surface to the second circumferential end surface, the first circumferential end surface, and the second circumferential end surface,
wherein a second cross section of the sealing lip at a location where the sealing lip is connected to the body of the blade is defined by an internal curved line and by an external curved line, the first circumferential end surface, and the second circumferential end surface, each of the internal and external curved lines comprising:
a respective median portion, which is convex in a direction from a head of the blade to a root of the blade;
a respective first intermediate portion, which continuously extends from the respective median portion towards the first circumferential end surface of the sealing lip, and which is concave in the direction from the head of the blade to the root of the blade, whereby a respective first point of inflection separates the respective median portion from the respective first intermediate portion;
a respective second intermediate portion, which continuously extends from the respective median portion towards the second circumferential end surface of the sealing lip, and which is concave in the direction from the head of the blade to the root of the blade, whereby a respective second point of inflection separates the respective median portion from the respective second intermediate portion; and
a respective first end portion and a respective second end portion which respectively continuously extend from the respective first intermediate portion and the respective second intermediate portion, respectively to the first and to the second of the circumferential end surfaces of the sealing lip;
each portion of the internal curved line being defined facing the corresponding portion of the external curved line, along the direction from the head of the blade to the root of the blade; and
the cross section of the sealing lip evolving in a continuous manner from the second cross section to the free axial end of the sealing lip first cross section.