公开(公告)号：US20190308738A1

公开(公告)日：2019-10-10

申请号：US15946439

申请日：2018-04-05

Applicant: Bell Helicopter Textron Inc.

Inventor： Steven R. Ivans ,  Terry L. Gibson

IPC: B64D29/06 ,  B64C29/00 ,  B64D7/00 ,  F41H3/00

Abstract: An embodiment of the present invention provides a blocking door that is pivotally disposed on a fixed nacelle of a tiltrotor aircraft for pivoting between a stowed position when a proprotor pylon is in the substantially horizontal position and a protective blocking position in front of the proprotor pylon when the proprotor pylon is positioned in the non-horizontal position. In other aspects, there is provided a blocking door and a method of reducing infrared and/or radar signatures of rotorcraft with a rotatable proprotor.

公开(公告)号：US10994852B2

公开(公告)日：2021-05-04

申请号：US15946439

申请日：2018-04-05

Applicant: Bell Helicopter Textron Inc.

Inventor： Steven R. Ivans ,  Terry L. Gibson

IPC: B64D29/06 ,  B64C29/00 ,  B64D7/00 ,  F41H3/00

Abstract: An embodiment of the present invention provides a blocking door that is pivotally disposed on a fixed nacelle of a tiltrotor aircraft for pivoting between a stowed position when a proprotor pylon is in the substantially horizontal position and a protective blocking position in front of the proprotor pylon when the proprotor pylon is positioned in the non-horizontal position. In other aspects, there is provided a blocking door and a method of reducing infrared and/or radar signatures of rotorcraft with a rotatable proprotor.