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A balancing weight clip for balancing a rotor assembly of a gas turbine engine which includes a weight portion, and a first flange engaging portion and a second flange engaging portion extending from the weight portion. The weight portion and the first and second flange engaging portions define a fl

A balancing weight clip for balancing a rotor assembly of a gas turbine engine which includes a weight portion, and a first flange engaging portion and a second flange engaging portion extending from the weight portion. The weight portion and the first and second flange engaging portions define a flange receiving opening for receiving a flange of a disc of the rotor assembly. The first flange engaging portion is provided with a detent facing the second flange engaging portion and engageable with a mating groove provided on a face of the flange. At least one of the first and second flange engaging portions is elastically deformable so that the first and second flange engaging portions are elastically moveable away from one another to removably receive the flange in the flange receiving opening and engage the detent with the mating groove.

대표청구항 ▼

1. A rotor assembly for a gas turbine engine, comprising: a disc adapted for mounting to an engine shaft defining a longitudinal axis, the disc having two opposed faces and a circumferential blade receiving edge therebetween adapted for mounting of a plurality of radially projecting blades;an axiall

1. A rotor assembly for a gas turbine engine, comprising: a disc adapted for mounting to an engine shaft defining a longitudinal axis, the disc having two opposed faces and a circumferential blade receiving edge therebetween adapted for mounting of a plurality of radially projecting blades;an axially extending flange projecting from one of the two opposed faces of the disc and annularly extending therearound at a radially location that is spaced apart from the circumferential blade receiving edge of the disc, the flange having a circumferential groove therein; andat least one balancing weight clip engaged solely to the axially extending flange and having a length which covers only a portion of the circumference of the annular axially extending flange, the balancing weight clip having a mass balancing the rotor assembly and comprising a first flange engaging portion, a second flange engaging portion and a weight portion therebetween, the weight portion and the first and second flange engaging portions defining a flange receiving opening, the first flange engaging portion being provided with a detent facing the second flange engaging portion and mating with the circumferential groove, the at least one balancing weight clip being removably secured to the flange in a secured position wherein the flange is received in the flange receiving opening and the detent engages the circumferential groove, the balancing weight clip being immobile in an axial and circumferential direction when in the secured position, at least one of the first and second flange engaging portions being elastically deformable so that the first and second flange engaging portions are elastically moveable away from one another to receive the flange in the flange receiving opening. 2. The rotor assembly as claimed in claim 1, wherein the flange further comprises a plurality of rail segments each extending circumferentially about the flange, a distance between two following ones of the plurality of rail segments being substantially equal to a length of the balancing weight clip, the two following ones of the plurality of rail segments being positioned such that the balancing weight clip abuts against and lies between the two following ones of the plurality of rail segments when in the secured position, thereby preventing circumferential rotation of the balancing weight clip about the flange. 3. The rotor assembly as claimed in claim 1, wherein an edge of the flange comprises a plurality of recesses being circumferentially positioned thereabout. 4. The rotor assembly as claimed in claim 3, wherein the at least one balancing weight clip bridges a corresponding one of the plurality of recesses, when in the secured position. 5. The rotor assembly as claimed in claim 4, wherein the first and second flange engaging portions of the at least one balancing weight clip each comprise a rivet receiving hole. 6. The rotor assembly as claimed in claim 5, further comprising at least one rivet engaged in the rivet receiving holes and fixedly secured to the at least one balancing weight clip. 7. The rotor assembly as claimed in claim 6, wherein a circumferential length of each one of the plurality of recesses is substantially equal to a width of the at least one rivet. 8. The rotor assembly as claimed in claim 1, wherein the circumferential groove is discontinuous about the flange to form a plurality of groove segments each mating with the detent, the detent of the at least one balancing weight clip being engaged in a particular one of the plurality of groove segments and circumferentially abutting against walls of the particular one of the plurality of groove segments in order to prevent any circumferential displacement of the at least one balancing weight clip about the flange. 9. A balancing weight clip for a rotor assembly of a gas turbine engine, comprising: a weight portion defining a mass adapted to balance the rotor assembly, the weight portion being disposed between a first flange engaging portion and a second flange engaging portion, the first and second flange engaging portions extending from and being integrally formed with the weight portion; anda first flange engaging portion and a second flange engaging portion extending from the weight portion, the weight portion and the first and second flange engaging portions defining a flange receiving opening for receiving a flange of a disc of the rotor assembly, the first flange engaging portion being provided with a detent facing the second flange engaging portion and engageable with a mating groove provided on a face of the flange, at least one of the first and second flange engaging portions being elastically deformable so that the first and second flange engaging portions are elastically moveable away from one another to removably receive the flange in the flange receiving opening and engage the detent with the mating groove. 10. The balancing weight clip as claimed in claim 9, wherein a distance between the detent and the second flange engaging portion is less than a thickness of the flange. 11. The balancing weight clip as claimed in claim 9, wherein a width of the second flange engaging portion is less than a width of the first flange engaging portion. 12. The balancing weight clip as claim in claim 9, wherein a distance between the first and second flange engaging portions is constant along a width of the first and second flange engaging portions. 13. The balancing weight clip as claimed in claim 9, wherein a distance between the first and second flange engaging portions distal to the weight portion is less than a distance between the first and second flange engaging portions proximal to the weight portion. 14. The balancing weight clip as claimed in claim 9, wherein the detent is bulb-shaped. 15. The balancing weight clip as claimed in claim 9, wherein an end of the second flange engaging portion comprises a inclined insertion face. 16. The balancing weight clip as claimed in claim 9, wherein the first and second flange engaging portions are curved along a length thereof, a curvature of the first and second flange engaging portions being substantially equal to a curvature of the flange. 17. The balancing weight clip as claimed in claim 9, wherein the first and second flange engaging portions each comprise a hole for receiving a rivet. 18. A method for balancing a rotor disc having two opposed faces and an axially extending flange projecting from one of the two opposed faces of the disc and annularly extending therearound at a radial location that is spaced apart from a circumferential blade receiving edge of the disc between the two opposed faces of the disc and adapted for mounting of a plurality of radially projecting blades, the flange having a circumferential groove therein, the method comprising: abutting a balancing weight clip against the flange of the rotor disc, the balancing weight clip having a mass adapted to balance the rotor disc, the balancing weight clip having a weight portion and a first flange engaging portion and a second flange engaging portion extending from the weight portion, the weight portion being disposed between the first and second flange engaging portions which extend from and are integrally formed with the weight portion, the weight portion and the first and second flange engaging portions defining a flange receiving opening therebetween for receiving the flange of the rotor disc, the first flange engaging portion being provided with a detent facing the second flange engaging portion and mating with the circumferential groove, at least one of the first and second flange engaging portions being elastically deformable, the abutting the balancing weight clip comprising abutting at least one of the first and second flange engaging portions against the flange; andengaging the balancing weight clip solely to the axially extending flange of the disc by exerting a force on the weight portion in order to insert the flange in the flange receiving opening and engage the detent of the first flange portion in the circumferential groove of the axially extending flange of the disc, wherein exerting the force on the weight portion results in elastically moving away the first and second flange engaging portions from one another. 19. The method as claimed in claim 18, further comprising positioning the balancing weight clip between two following ones of a plurality of rail segments each extending circumferentially on the flange, a circumferential distance between the two following ones of the plurality of rail segments being substantially equal to a length of the balancing weight clip. 20. The method as claimed in claim 19, wherein the positioning the balancing weight clip comprises positioning the balancing weight clip over a recess in the flange.