公开(公告)号：US20210061440A1

公开(公告)日：2021-03-04

申请号：US16558071

申请日：2019-08-31

Applicant: Bell Textron Inc.

Inventor： George Ryan Decker ,  Andrew G. Baines ,  Frank Douglas Sauer

IPC: B64C5/10 ,  B64C1/26 ,  B64C5/02

Abstract: A compliant tail structure for a rotorcraft having rotating components and a fuselage. The tail structure includes a tail assembly having first and second oppositely disposed tail members. A tail joint connects the tail assembly to an aft portion of the fuselage. The tail joint includes at least four tail mounts configured to establish a nodding axis for the tail assembly. At least two of the tail mounts are resilient tail mounts that are configured to establish a nodding degree of freedom for the tail assembly relative to the fuselage about the nodding axis, thereby detuning dynamic fuselage responses from excitation frequencies generated by the rotating components.

公开(公告)号：US20210039337A1

公开(公告)日：2021-02-11

申请号：US17027223

申请日：2020-09-21

Applicant: Bell Textron Inc.

Inventor： David G. Carlson ,  John R. McCullough ,  Douglas K. Wolfe ,  Andrew G. Baines ,  George R. Decker

IPC: B29C70/34 ,  B64C1/12 ,  B29C70/30 ,  B64F5/10 ,  B64C3/24 ,  B29C35/02 ,  B29C70/06 ,  B29C70/54 ,  B29D99/00 ,  B64C3/26 ,  B64C29/00 ,  B29C65/48 ,  B32B3/12 ,  B32B7/12 ,  B64C3/18 ,  B64F5/00

Abstract: In one aspect, there is a composite skin for a tiltrotor aircraft including a first skin having a periphery defined by a forward edge, an aft edge, and outboard ends; a second skin; and a honeycomb core disposed between the first skin and the second skin, the honeycomb core comprised of a plurality of honeycomb panels positioned along the longitudinal axis of the first skin, the plurality of honeycomb panels having an array of large cells, each cell having a width of at least 1 cm; wherein the second skin and the honeycomb core have an outer perimeter within the periphery of the first skin.

公开(公告)号：US11628633B2

公开(公告)日：2023-04-18

申请号：US17027223

申请日：2020-09-21

Applicant: Bell Textron Inc.

Inventor： David G. Carlson ,  John R. McCullough ,  Douglas K. Wolfe ,  Andrew G. Baines ,  George R. Decker

IPC: B32B3/12 ,  B29C70/30 ,  B64C1/12 ,  B64F5/10 ,  B64C3/24 ,  B29C35/02 ,  B29C70/06 ,  B29C70/34 ,  B29C70/54 ,  B29D99/00 ,  B64C3/26 ,  B64C29/00 ,  B29C65/48 ,  B32B7/12 ,  B64C3/18 ,  B64F5/00 ,  B29L31/30

Abstract: In one aspect, there is a composite skin for a tiltrotor aircraft including a first skin having a periphery defined by a forward edge, an aft edge, and outboard ends; a second skin; and a honeycomb core disposed between the first skin and the second skin, the honeycomb core comprised of a plurality of honeycomb panels positioned along the longitudinal axis of the first skin, the plurality of honeycomb panels having an array of large cells, each cell having a width of at least 1 cm; wherein the second skin and the honeycomb core have an outer perimeter within the periphery of the first skin.