Bond fixture for composite splice cap assembly

Patent metadata

Field	Value
Publication number	US-11220331-B2
Application number	US-201916387003-A
Country	US
Kind code	B2
Filing date	Apr 17, 2019
Priority date	Aug 9, 2016
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A bond fixture for bonding a component includes a frame defining a chamber for receiving the component. A first pad and a second pad are mounted to the frame. At least one of the first pad and the second pad is movable relative to the frame to adjust a pressure applied to the component. A caul assembly is adapted to be disposed in thermal communication with the component. The caul assembly heats a localized portion of the component.

First claim

What is claimed is:

1. A method of bonding a sheath splice fairing to a rotor blade comprising:
installing a splice cap assembly about the rotor blade;
installing a caul assembly in an overlapping relationship with the splice cap assembly;
mounting a bond fixture to the rotor blade about the splice cap assembly, the bond fixture comprising a plurality of frames interconnected by a support member, each of the plurality of frames disposed at different positions over a span of the rotor blade;
adjusting a position of one or more pressure pads of the bond fixture; and
applying localized and constant heat and localized and constant pressure to the splice cap assembly via the caul assembly.

2. The method according to claim 1 , further comprising connecting a power source to the caul assembly to apply heat to the splice cap assembly.

3. The method according to claim 1 , wherein the one or more pressure pads are movably coupled to a support member of the bond fixture.

4. A method of bonding a sheath splice fairing to a rotor blade comprising:
installing a splice cap assembly about the rotor blade;
installing a caul assembly in an overlapping relationship with the splice cap assembly;
mounting a bond fixture to the rotor blade about the splice cap assembly;
adjusting a position of one or more pressure pads of the bond fixture; and
applying localized and constant heat and localized and constant pressure to the splice cap assembly via the bond fixture,
wherein mounting the bond fixture to the rotor blade includes tightening at least one strap about the rotor blade.

5. A method of bonding a sheath splice fairing to a rotor blade comprising:
installing a splice cap assembly about the rotor blade;
installing a caul assembly in an overlapping relationship with the splice cap assembly;
mounting a bond fixture to the rotor blade about the splice cap assembly;
adjusting a position of one or more pressure pads of the bond fixture; and
applying localized and constant heat and localized and constant pressure to the splice cap assembly via the bond fixture,
wherein mounting the bond fixture to the rotor blade further comprises:
positioning a trailing edge guard about a trailing edge of the rotor blade, opposite the bond fixture; and
coupling the bond fixture to a trailing edge guard.

6. The method according to claim 5 , wherein mounting the bond fixture to the rotor blade further comprises connecting a first strap extending from the frame to a second strap extending from the trailing edge guard.

Assignees

• Sikorsky Aircraft Corp

Inventors

• Lofstrom Sven Roy
• Littlejohn David
• Boyle Eric

Classifications

• B64F5/10

  Manufacturing or assembling aircraft, e.g. jigs therefor · CPC title

• B64C27/46 Primary

  Blades · CPC title

• B64F5/40

  Maintaining or repairing aircraft · CPC title

• B29C73/24

  Apparatus or accessories not otherwise provided for · CPC title

• B23P2700/01

  Aircraft parts · CPC title