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US 11,505,312 B2Granted
Main rotor damper elastomeric rod end
AssigneeLockheed Martin Corporation
InventorAnatoly Kogan
Life of this patent
Estimating the term…
Abstract
A damper assembly includes a housing defining at least one or more cavities. A piston is in operable communication with the housing. A rod end is operatively coupled to the piston, the rod end having at least two cartridges.
Claims20
A damper assembly comprising:
- a housing defining at least one or more cavities;
- a piston in operable communication with the housing;
- and
- a rod end operatively coupled to the piston, the rod end comprising at least two elastomeric core cartridges separated by a void;
- wherein the at least two elastomeric core cartridges are pressed within the rod end such that the at least two elastomeric core cartridges are symmetrically arranged within the rod end, and wherein a first end of each of the at least two elastomeric core cartridges is tapered and abuts a central bushing and a second end of each of the at least two elastomeric core cartridges is wider than the first end and abuts an inner surface of the rod end, the at least two elastomeric core cartridges being positioned to cause at least one of reduction, prevention, or removal of an angular stiffness about an axis of the rod end.
2 more elements
A rotary wing aircraft comprising:
- a fuselage;
- a propulsion system attached to the fuselage;
- a plurality of blade assemblies;
- and
- a rotor hub driven by the propulsion system to rotate the blade assemblies and having a damper assembly coupled to each of the plurality of blade assemblies, wherein the damper assembly comprises:
- a housing defining at least one or more cavities;
- a piston in operable communication with the housing;
- and
- a rod end operatively coupled to the piston, the rod end comprising at least two elastomeric core cartridges separated by a void;
- wherein the at least two elastomeric core cartridges are pressed within the rod end such that the at least two elastomeric core cartridges are symmetrically arranged within the rod end, and wherein a first end of each of the at least two elastomeric core cartridges is tapered and abuts a central bushing and a second end of each of the at least two elastomeric core cartridges is wider than the first end and abuts an inner surface of the rod end, the at least two elastomeric core cartridges being positioned to cause at least one of reduction, prevention, or removal of an angular stiffness about an axis of the rod end.
7 more elements
Dependencies are inferred from the claim text.