公开(公告)号：US20180290723A1

公开(公告)日：2018-10-11

申请号：US15482594

申请日：2017-04-07

Applicant: Bell Helicopter Textron Inc.

Inventor： Matthew John Hill ,  William David Tohlen ,  Bobby Howard Mosier ,  Lynn Francis Eschete

IPC: B64C1/14

Abstract: Aspects of the embodiments of the present disclosure are directed to a window panel having a bubble form. The window panel is a push-out window that permits emergency egress from an aircraft, such as a rotorcraft. The bubble form is designed and selected such that the window panel will remain secured in a window frame of the aircraft at a level cruising speed of 120 knots true air speed. In embodiments, the window panel remains secured in the window frame at 120 ktas and a sideslip of at least 6 degrees.

公开(公告)号：US10814971B2

公开(公告)日：2020-10-27

申请号：US15949660

申请日：2018-04-10

Applicant: Bell Helicopter Textron Inc.

Inventor： Dalton T. Hampton ,  Andrew Paul Haldeman ,  Aaron Alexander Acee ,  Matthew John Hill

IPC: B64C27/82 ,  B64C27/06

Abstract: Systems and methods include providing an aircraft with a tail rotor system having a tail rotor housing that forms a cambered airfoil between an upper cambered surface and a lower cambered surface of the tail rotor housing. The cambered airfoil design of the tail rotor housing is capable of providing sufficient lifting force of an aircraft to offload the tail rotor during forward flight, thereby eliminating the need for a traditional vertical stabilizer or fin. The tail rotor blades of the tail rotor system are disposed within an aperture in the tail rotor housing, which minimizes or preferably eliminates exposure of the tail rotor blades to edgewise airflow typically encountered during forward flight, thereby allowing rigid rotor hubs, both in-plane and out-of-plane, to be used in the tail rotor system while also reducing noise output of the tail rotor system.

公开(公告)号：US20190308722A1

公开(公告)日：2019-10-10

申请号：US15949660

申请日：2018-04-10

Applicant: Bell Helicopter Textron Inc.

Inventor： Dalton T. Hampton ,  Andrew Paul Haldeman ,  Aaron Alexander Acee ,  Matthew John Hill

IPC: B64C27/82 ,  B64C27/06

Abstract: Systems and methods include providing an aircraft with a tail rotor system having a tail rotor housing that forms a cambered airfoil between an upper cambered surface and an lower cambered surface of the tail rotor housing. The cambered airfoil design of the tail rotor housing is capable of providing sufficient lifting force of an aircraft to offload the tail rotor during forward flight, thereby eliminating the need for a traditional vertical stabilizer or fin. The tail rotor blades of the tail rotor system are disposed within an aperture in the tail rotor housing, which minimizes or preferably eliminates exposure of the tail rotor blades to edgewise airflow typically encountered during forward flight, thereby allowing rigid rotor hubs, both in-plane and out-of-plane, to be used in the tail rotor system while also reducing noise output of the tail rotor system.