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US 9,957,038 B2Granted
Propeller assemblies and propeller blade retention assembly
AssigneeGE Aviation Systems LLC
InventorsRajendra Vishwanath Pawar, Ravindra Shankar Ganiger, Murugesan Periasamy, David Raju Yamarthi, Sandeep Kumar, Amit Arvind Kurvinkop, Bajarang Agrawal, Nagashiresha G
Life of this patent
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Abstract
Propeller blade assemblies and a propeller blade retention assembly including a sleeve for operably coupling a propeller blade to a hub wherein the sleeve retains the propeller blade within the hub and allows the propeller blade to rotate about its pitch axis and where the sleeve includes a self-aligning mechanism.
Claims11
A propeller assembly, comprising:
- a hub having a receiver recess;
- a sleeve located within the receiver recess and having a through passage defining a blade recess having a first contour;
- and
- a propeller blade having a protrusion, with a second contour and received within the blade recess;
- wherein the first contour and second contour are complementary and when the protrusion is inserted into the blade recess the sleeve having the first contour mates with the second contour of the protrusion of the propeller blade;
- and
- wherein a gap is defined between the first contour and the second contour;
- further comprising at least one seal configured to close a portion of the gap and oil located within the gap between a first seal and a second seal.
5 more elements
A propeller assembly, comprising:
- a hub having a first piece operably coupled to a second piece to define at least one blade recess formed by a wall having a profile defining a first contour;
- and
- a propeller blade having a protrusion, with a second contour, received within the blade recess;
- wherein the first contour and second contour are complementary and when the protrusion is inserted into the blade recess the hub having the first contour mates with the second contour of the protrusion of the propeller blade to define an interference structure configured to prevent radial movement of the blade;
- and
- wherein a gap is defined between the first contour and the second contour;
- further comprising first and second seals located at distal ends of the gap.
4 more elements
A propeller assembly, comprising:
- a hub having a first piece operably coupled to a second piece to define at least one blade recess formed by a wall having a profile defining a first contour;
- and
- a propeller blade having a protrusion, with a second contour, received within the blade recess;
- wherein the first contour and second contour are complementary and when the protrusion is inserted into the blade recess the hub having the first contour mates with the second contour of the protrusion of the propeller blade to define an interference structure configured to prevent radial movement of the blade;
- and
- wherein a gap is defined between the first contour and the second contour;
- further comprising first and second seals located at distal ends of the gap and a lubricant located within the gap between the first and second seals.
4 more elements
Dependencies are inferred from the claim text.