公开(公告)号：US20210101676A1

公开(公告)日：2021-04-08

申请号：US16593998

申请日：2019-10-05

Applicant: Bell Textron Inc.

Inventor： Karl Schroeder ,  William Anthony Amante ,  Joseph Richard Carpenter, JR. ,  David G. Carlson

IPC: B64C27/32 ,  B64F5/10

Abstract: An annular spar for a ducted-rotor of an aircraft may be fabricated from composite material, such as carbon-fiber-reinforced plastic (CFRP). The spar may include an annular plate, a first circumferential flange that extends from an outer edge of the plate, and a second circumferential flange that extends from an inner edge of the plate. The first and second circumferential flanges may taper inwardly toward a center axis of the spar. The spar may be constructed of a plurality of layers of CFRP. One or more of the layers may be fabricated from a single ply of CFRP, and one or more other layers may be fabricated from a plurality of plies of CFRP. The spar may exhibit a coefficient of thermal expansion (CTE) that allows an associated tip gap to remain essentially constant throughout a range of operating temperatures.

公开(公告)号：US20200290725A1

公开(公告)日：2020-09-17

申请号：US16732198

申请日：2019-12-31

Applicant: Bell Textron Inc.

Inventor： Chad Lewis Jarrett ,  Frank Bradley Stamps ,  Daniel Bryan Robertson ,  Kirk Landon Groninga ,  Matthew Edward Louis ,  William Anthony Amante ,  Robert Vaughn ,  Joseph Richard Carpenter, JR.

IPC: B64C11/00 ,  B64C11/02 ,  B64D27/26

Abstract: An aircraft has a ducted thruster. The ducted thruster includes a duct having an inner wall, a stator hub disposed within the duct, a first stator extending along a first longitudinal axis between the inner wall and the stator hub, and a second stator. The second stator extends along a second longitudinal axis between the inner wall and the stator hub. The second longitudinal axis is either (1) substantially perpendicular to the first longitudinal axis or (2) substantially parallel to the first longitudinal axis and offset from the first longitudinal axis.