公开(公告)号：US20230249811A1

公开(公告)日：2023-08-10

申请号：US17665432

申请日：2022-02-04

Applicant: Lockheed Martin Corporation

Inventor： Evan S. Tobin ,  Daniel George Schuster ,  David N. Schmaling ,  Evan Medrano ,  Masruk Siddique ,  Erik M. Byrne ,  James Orbon

IPC: B64C27/48 ,  B64C27/10 ,  B64C27/32 ,  B64C27/35

CPC classification number: B64C27/48 ,  B64C27/10 ,  B64C27/35 ,  B64C27/327

Abstract: A rotor blade retention assembly is configured to connect a rotor blade to a central hub comprising a hub arm coupled to and extending radially outward from a hub bowl. The hub arm includes a hub arm lug. The rotor blade retention assembly includes a tension-torsion strap with an inboard end and an outboard end, the inboard end including an inboard pin hole and the outboard end including an outboard pin hole. The rotor blade retention assembly further includes an inboard blade pin and an outboard blade pin. The inboard blade pin is configured to extend through the hub arm lug and the inboard pin hole and to couple the inboard end of the tension-torsion strap to the hub arm. The outboard blade pin is configured to extend through a blade lug of a rotor blade and the outboard pin hole and to couple the outboard end of the tension-torsion strap to the rotor blade.