公开(公告)号：US20240140600A1

公开(公告)日：2024-05-02

申请号：US18409652

申请日：2024-01-10

Applicant: Lockheed Martin Corporation

Inventor： Joshua A. Breon ,  Eric S. Parsons ,  Timothy James Conti ,  Frank M. Caputo

IPC: B64C27/48

CPC classification number: B64C27/48

Abstract: A rotor blade configured to be installed on a rotary wing aircraft includes a spar including an inboard portion extending from a root of the rotor blade to a first spanwise position of the rotor blade and an outboard portion meeting the inboard portion at the first spanwise position. The rotor blade further includes an upper skin and a lower skin coupled the outboard portion of the spar. The first spanwise position is defined by a most inboard point at which the upper and lower skins are coupled to the spar. The inboard portion includes a top layer, a bottom layer, and an inner cavity. The top layer has a substantially constant first thickness and the bottom layer has a substantially constant second thickness, and the distance between an outer surface of the top layer and an outer surface of the bottom layer is substantially constant.

公开(公告)号：US20240043116A1

公开(公告)日：2024-02-08

申请号：US17881497

申请日：2022-08-04

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Joshua A. Breon ,  Eric S. Parsons ,  Timothy James Conti ,  Frank M. Caputo

IPC: B64C27/48

CPC classification number: B64C27/48

Abstract: A method of modifying a rotor blade is provided for a rotor blade including a spar having an inboard portion with a substantially constant overall height, the inboard portion further including a top layer having a substantially constant first thickness and a bottom layer having a substantially constant second thickness. The method includes removing a root portion of the inboard portion to thereby modify the rotor blade and installing a cuff configured to couple to the rotor blade to an aircraft.

公开(公告)号：US12252240B2

公开(公告)日：2025-03-18

申请号：US18409652

申请日：2024-01-10

Applicant: Lockheed Martin Corporation

Inventor： Joshua A. Breon ,  Eric S. Parsons ,  Timothy James Conti ,  Frank M. Caputo

IPC: B64C27/48

Abstract: A rotor blade configured to be installed on a rotary wing aircraft includes a spar including an inboard portion extending from a root of the rotor blade to a first spanwise position of the rotor blade and an outboard portion meeting the inboard portion at the first spanwise position. The rotor blade further includes an upper skin and a lower skin coupled the outboard portion of the spar. The first spanwise position is defined by a most inboard point at which the upper and lower skins are coupled to the spar. The inboard portion includes a top layer, a bottom layer, and an inner cavity. The top layer has a substantially constant first thickness and the bottom layer has a substantially constant second thickness, and the distance between an outer surface of the top layer and an outer surface of the bottom layer is substantially constant.

公开(公告)号：US12214872B2

公开(公告)日：2025-02-04

申请号：US18132330

申请日：2023-04-07

Applicant: Lockheed Martin Corporation

Inventor： Timothy James Conti ,  Eric S. Parsons ,  Joshua A. Breon ,  Benjamin E. Isabella ,  William Paul Adams ,  Christopher Michael Colschen

IPC: B64C27/46 ,  B64C27/473

Abstract: A rotor blade configured to be installed on a rotary-wing aircraft includes a main blade body including an inboard end configured to be coupled to a rotor blade hub and an outboard end. The rotor blade includes a blade tip removably coupled to the outboard end of the main blade body, the blade tip including an inner cavity. The rotor blade further includes a tip block including an inboard portion coupled to the outboard end of the main blade body and a cantilevered portion extending beyond the outboard end of the rotor blade and into the inner cavity of the blade tip.