公开(公告)号：US20200017710A1

公开(公告)日：2020-01-16

申请号：US16289600

申请日：2019-02-28

Applicant: Bell Helicopter Textron Inc.

Inventor： William P. Sumner ,  William Lewis Neal, II ,  Robert Matson ,  David Kimble Huber

IPC: C09D175/04 ,  B64C1/14

Abstract: Briefly, the disclosure relates to films, such as polyurethane films, which may be utilized to coat a windshield of an aircraft, such as a rotary-wing or a fixed-wing aircraft. In particular implementations, prior to application of a polyurethane film to an aircraft windshield, the polyurethane film may be exposed to an elevated temperature for an appropriate duration, which may operate to decrease stresses internal to the polyurethane film as well as to soften the polyurethane film. A slip solution may be applied to the aircraft windshield, so as to permit sliding of the polyurethane film relative to the windshield. After application of the slip solution, a tack solution may be applied, which may operate to remove the slip solution, thereby permitting the polyurethane film to be affixed to the windshield.

公开(公告)号：US09994300B2

公开(公告)日：2018-06-12

申请号：US15410993

申请日：2017-01-20

Applicant: Bell Helicopter Textron Inc.

Inventor： William Sumner ,  Tim Reed ,  Christopher Marvin Rowe ,  Lawrence Duane Lee ,  Glen Rivers ,  Robert Harmon ,  Jeremy Robert Schadler ,  William Lewis Neal, II

IPC: B64D45/00 ,  B64C1/14

CPC classification number: B64C1/1492 ,  B64D45/00

Abstract: This description relates to a strapped windshield assembly for a rotorcraft. In some implementations, the rotorcraft includes an airframe, a windshield, and a plurality of independent straps connected to the airframe and the windshield, the straps operative to move independently with respect to one another. The independent movement of the straps allow relative movement of portions of the windshield in response to a strike. In some implementations, the straps are spaced every 4-6 inches along an edge of the windshield. In some implementations, the straps are over an edge of the windshield. The straps can have a modulus of elasticity of 8-12 millions of pounds per square inch (MSI). The windshield can include polycarbonate material.