公开(公告)号：US11453486B2

公开(公告)日：2022-09-27

申请号：US17472001

申请日：2021-09-10

Applicant: Textron Innovations Inc.

Inventor： Mark Adam Wiinikka ,  John McCullough ,  Russell Steven Cole ,  William Russell Cleary, Jr. ,  Zachary Edwin Dailey

IPC: B64C27/48 ,  B29C70/54 ,  B29L31/08

Abstract: A rotorcraft main rotor system, including a yoke, a rotor blade, and a grip assembly attaching the rotor blade to the yoke. The grip assembly includes a grip body formed from a contiguous laminated composite and has a substantially constant thickness, where the grip body has an upper extension, a lower extension and a connecting portion connected between an inboard end of the upper extension and an inboard end of the lower extension. An inside surface of the upper extension faces, and is substantially parallel to, an inside surface of the lower extension, and the upper extension has first features and the lower extension has second features that are aligned with the first features, where the first features and second features each include at least one of an edge contour, attachment holes, or first protective elements.

公开(公告)号：US11752898B2

公开(公告)日：2023-09-12

申请号：US17472907

申请日：2021-09-13

Applicant: Textron Innovations Inc.

Inventor： Yue Fan ,  Michael Raymond Hull ,  Zachary Edwin Dailey

IPC: B60L58/26 ,  H01M10/625 ,  H01M10/6567 ,  B64D13/00 ,  B64C29/00

CPC classification number: B60L58/26 ,  B64C29/0033 ,  B64D13/006 ,  H01M10/625 ,  H01M10/6567 ,  B60L2200/10 ,  H01M2220/20

Abstract: A battery system includes a plurality of battery modules each formed from a plurality of battery cells. A shared cooling structure is thermally coupled to each of the battery modules. The shared cooling structure is configured to conduct heat relative to the battery modules. A thermal interface is disposed between the battery cells of each battery module and the shared cooling structure. Each thermal interface is configured to transition from a first thermal conductivity state to a second thermal conductivity state when heat generated by the respective battery cells exceeds a threshold level. The second thermal conductivity state is lower than the first thermal conductivity state such that after one of the thermal interfaces has transitioned from the first thermal conductivity state to the second thermal conductivity state, heat transfer from the respective battery cells to the shared cooling structure is reduced.

公开(公告)号：US20230078659A1

公开(公告)日：2023-03-16

申请号：US17472907

申请日：2021-09-13

Applicant: Textron Innovations Inc.

Inventor： Yue Fan ,  Michael Raymond Hull ,  Zachary Edwin Dailey

IPC: B60L58/26 ,  B64C29/00 ,  B64D13/00 ,  H01M10/625 ,  H01M10/6567

Abstract: A battery system includes a plurality of battery modules each formed from a plurality of battery cells. A shared cooling structure is thermally coupled to each of the battery modules. The shared cooling structure is configured to conduct heat relative to the battery modules. A thermal interface is disposed between the battery cells of each battery module and the shared cooling structure. Each thermal interface is configured to transition from a first thermal conductivity state to a second thermal conductivity state when heat generated by the respective battery cells exceeds a threshold level. The second thermal conductivity state is lower than the first thermal conductivity state such that after one of the thermal interfaces has transitioned from the first thermal conductivity state to the second thermal conductivity state, heat transfer from the respective battery cells to the shared cooling structure is reduced.

公开(公告)号：US20210403152A1

公开(公告)日：2021-12-30

申请号：US17472001

申请日：2021-09-10

Applicant: Textron Innovations Inc.

Inventor： Mark Adam Wiinikka ,  John McCullough ,  Russell Steven Cole ,  William Russell Cleary, JR. ,  Zachary Edwin Dailey

IPC: B64C27/48 ,  B29C70/54

Abstract: A rotorcraft main rotor system, including a yoke, a rotor blade, and a grip assembly attaching the rotor blade to the yoke. The grip assembly includes a grip body formed from a contiguous laminated composite and has a substantially constant thickness, where the grip body has an upper extension, a lower extension and a connecting portion connected between an inboard end of the upper extension and an inboard end of the lower extension. An inside surface of the upper extension faces, and is substantially parallel to, an inside surface of the lower extension, and the upper extension has first features and the lower extension has second features that are aligned with the first features, where the first features and second features each include at least one of an edge contour, attachment holes, or first protective elements.

公开(公告)号：US11155347B2

公开(公告)日：2021-10-26

申请号：US16372732

申请日：2019-04-02

Applicant: Textron Innovations Inc.

Inventor： Mark Adam Wiinikka ,  John McCullough ,  Russell Steven Cole ,  William Russell Cleary, Jr. ,  Zachary Edwin Dailey

IPC: B64C27/48 ,  B29C70/54 ,  B29L31/08

Abstract: An embodiment rotorcraft main rotor system, including a yoke, a rotor blade, and a grip assembly attaching the rotor blade to the yoke. The grip assembly includes a grip body formed from a contiguous laminated composite and has a substantially constant thickness, where the grip body has an upper extension, a lower extension and a connecting portion connected between an inboard end of the upper extension and an inboard end of the lower extension. An inside surface of the upper extension faces, and is substantially parallel to, an inside surface of the lower extension, and the upper extension has first features and the lower extension has second features that are aligned with the first features, where the first features and second features each include at least one of an edge contour, attachment holes, or first protective elements.