公开(公告)号：US20170259521A1

公开(公告)日：2017-09-14

申请号：US15601640

申请日：2017-05-22

Applicant: Bell Helicopter Textron Inc.

Inventor： James Everett Kooiman ,  George Ryan Decker ,  Keith Alan Stanney ,  Robert Mark Chris

IPC: B32B3/26 ,  B64C3/26 ,  B32B27/08

CPC classification number: B32B3/266 ,  B29C70/00 ,  B29D24/005 ,  B29D99/0021 ,  B32B27/08 ,  B32B2305/024 ,  B32B2305/34 ,  B32B2307/30 ,  B32B2605/18 ,  B64C3/18 ,  B64C3/187 ,  B64C3/26 ,  B64C29/0033 ,  B64F5/10

Abstract: A core stiffened panel includes first and second skins having a large cell core and a solid insert joined therebetween. The solid insert has a side surface at least a portion of which is adjacent to the large cell core and may be joined to the large cell core. The first skin, the second skin and the solid insert may be formed from composite materials such as carbon composite materials and preferably have generally matching coefficients of thermal expansion.

公开(公告)号：US20170137122A1

公开(公告)日：2017-05-18

申请号：US15417113

申请日：2017-01-26

Applicant: Bell Helicopter Textron Inc.

Inventor： James Everett Kooiman ,  George Ryan Decker ,  Andrew G. Baines ,  David R. Bockmiller ,  Erick Wayne Kohler

IPC: B64C29/00 ,  B64F5/40

CPC classification number: B64C29/0033 ,  B64C27/22 ,  B64D35/00 ,  B64F5/40 ,  F16H1/006 ,  Y10T29/49318 ,  Y10T74/1966

Abstract: A drive system for a tiltrotor aircraft includes a first gearbox rotatably mounted to the airframe and rotatable about a longitudinal axis to operate the tiltrotor aircraft between helicopter and airplane modes. A second gearbox extends generally normal to the longitudinal axis of the first gearbox. A common shaft, rotatable about the longitudinal axis, transfers torque from an output gear of the second gearbox to an input gear of the first gearbox. A support assembly couples the second gearbox to the airframe and includes a fixed joint proximate the longitudinal axis, a first directional reacting joint remote from the longitudinal axis providing a first radial growth degree of freedom to the second gearbox and a second directional reacting joint remote from the longitudinal axis providing a second radial growth degree of freedom to the second gearbox that is not parallel with the first radial growth degree of freedom.