公开(公告)号：US20210114723A1

公开(公告)日：2021-04-22

申请号：US17081654

申请日：2020-10-27

Applicant: Bell Textron Inc.

Inventor： John Robert Wittmaak, JR. ,  Steven M. Loveland ,  Joshua Allan Edler ,  Alan Hisashi Steinert ,  Stephen Yibum Chung ,  Matthew Edward Louis

IPC: B64C29/00

Abstract: A modular tandem tiltrotor aircraft in which the tiltrotor assemblies are operably coupled at the forward and aft ends of the fuselage of the aircraft is disclosed. The modular tandem tiltrotor assemblies are capable of rotating between a vertical lift position and a horizontal flight position. The modular tandem tiltrotor aircraft can be structurally more efficient and lower drag than a conventional tiltrotor, has better control authority and lifting capacity than hybrid-quads and tail-sitters, and has more range than a helicopter or multi-rotor. The modular tandem tiltrotor aircraft can orbit and search over a broad area, or can hover for long periods, depending on the application. Instead of providing a multi-function tandem tiltrotor aircraft that is generally suited for all applications, but not optimized for any, the modular tandem tiltrotor aircraft allows for customized configuration to optimize the aircraft for a particular application.

公开(公告)号：US11585283B2

公开(公告)日：2023-02-21

申请号：US17094340

申请日：2020-11-10

Applicant: Bell Textron Inc.

Inventor： Alan Hisashi Steinert

IPC: F02C9/42 ,  B64C27/06 ,  B64C27/12 ,  B64C27/82 ,  B64D27/10 ,  B64D27/24 ,  B64D31/04 ,  B64D37/00 ,  B64D41/00 ,  F02C6/20 ,  B64D27/02

Abstract: An exemplary aircraft includes a turbine engine having a gas generator spool and a power spool, the power spool operational to drive a rotor, a first generator coupled to the gas generator spool, and a controller operable to increase a load on the gas generator spool when the gas generator spool is on a speed limit thereby increasing a speed limit margin in order to increase power available from the turbine engine.

公开(公告)号：US20210403168A1

公开(公告)日：2021-12-30

申请号：US16915002

申请日：2020-06-29

Applicant: Bell Textron Inc.

Inventor： Thomas Dewey Parsons ,  James E. Sobel ,  Alan Hisashi Steinert ,  David Henderson Loe

IPC: B64D27/02 ,  B64D27/24 ,  B64D41/00 ,  B60L50/60 ,  B64C3/32 ,  B64C27/50 ,  B64C29/00

Abstract: A hybrid propulsion system for a tiltrotor aircraft comprises one or more engines that provide thrust whenever the tiltrotor aircraft is in a first forward flight mode, one or more electrical or hydraulic power sources, and two or more pylon assemblies. Each pylon assembly houses one or more electric or hydraulic motors connected to the one or more electrical or hydraulic power sources and a proprotor. All or part of each pylon assembly is rotatable. The proprotors provide lift whenever the tiltrotor aircraft is in a vertical takeoff and landing mode and a hover mode, and provide thrust whenever the tiltrotor aircraft is in a second forward flight mode.