Method and device for connecting and separating two elements, with combined connecting and separating means

Patent metadata

Field	Value
Publication number	US-10184766-B2
Application number	US-201414908705-A
Country	US
Kind code	B2
Filing date	Jul 31, 2014
Priority date	Aug 1, 2013
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A method and device enable the linear separation of two elements attached to each other through two connecting plates of the first element and the second element respectively. An arrangement connecting and separating the two connecting plates are mixed and comprise a layer. The connecting arrangement comprises soldering, glue, or resin, whereas the separating arrangement comprises thermite. These elements can also be layered rather than mixed. An electrical triggering of this assembly causes its quick and local warming-up and thus enables both of these elements to be separated.

First claim

The invention claimed is:

1. A method for connecting and separating a first element and a second element, wherein the first element has a first surface and the second element has a second surface, the method comprising the steps:
attaching a first connecting plate to the first element, such that the first connecting plate has an outer face in direct contact with the first surface of the first element, and the first connecting plate has a first connecting face opposite the outer face of the first connecting plate,
attaching a second connecting plate to the second element, such that the second connecting plate has an outer face in direct contact with the second surface of the second element, and the second connecting plate has a second connecting face opposite the outer face of the second connecting plate,
placing the first and second elements such that the first and second surfaces lie in a face-to-face relationship, thereby also placing the first and second connecting faces in a face-to-face relationship,
establishing a local connection of the first element to the second element by placing a connecting arrangement comprising a thermite and a connecting agent between the face-to-face relationship of the first and second connecting faces, in direct contact with the first and second connecting faces, and
removing the local connection by electrically triggering the thermite to cause a warming of the thermite, wherein only the warming of the thermite causes a warming-up and a destruction of the connecting arrangement without an explosion, and wherein the second surface of the second element is not mechanically deformed by the destruction of the connecting arrangement.

2. A device for connecting and separating a first element and a second element, wherein the first element has a first surface and the second element has a second surface in a face-to-face relationship with the first surface, the device comprising:
a first connecting plate attached to the first element, such that the first connecting plate has an outer face in direct contact with the first surface of the first element, and the first connecting plate has a first connecting face opposite the outer face of the first connecting plate,
a second connecting plate attached to the second element, such that the second connecting plate has an outer face in direct contact with the second surface of the second element, and the second connecting plate has a second connecting face opposite the outer face of the second connecting plate and in a face-to-face relationship with the first connecting face,
a connecting arrangement comprising a thermite and a connecting agent arranged between the face-to-face relationship of the first and second connecting faces, in direct contact with the first and second connecting faces, such that the connecting arrangement defines a local connection between the first element and the second element, and
an electrical control arranged to remotely pyrotechnically trigger the thermite in the connecting arrangement to cause a warming of the thermite, wherein only the warming of the thermite causes a warming-up and a destruction of the local connection between the first element and the second element without an explosion, and wherein the second surface is not mechanically deformed during the destruction of the local connection.

3. The device according to claim 2 , wherein the first and second connecting plates are mechanically connected to the first element and the second element, respectively.

4. The device according to claim 3 , wherein the first and second connecting plates are attached to the first and second elements, respectively, with bolts.

5. The device according to claim 2 , wherein one of the first and second connecting plates has a land pressing against the other of the first and second connecting plates.

6. The device according to claim 2 , wherein the connecting arrangement comprises a mixture of the thermite and the connecting agent.

7. The device according to claim 2 , wherein the connecting arrangement comprises a layer of the thermite placed between two layers of the connecting agent.

8. The device according to claim 2 , wherein the connecting agent comprises glue.

9. The device according to claim 2 , wherein the connecting agent comprises solder.

10. The device according to claim 2 , wherein the connecting arrangement comprises two outer layers made of glue or resin, and a central layer arranged between the two outer layers, wherein the central layer is made up of a mixture of the thermite and the connecting agent, and wherein the connecting agent is a material chosen from the group consisting of resin and glue.

Assignees

• Airbus Defence & Space Sas

Inventors

• Medina Felipe
• Preaud Luc

Classifications

• B64G1/645

  Separators · CPC title

• F42B15/38 Primary

  Ring-shaped explosive elements for the separation of rocket parts {(systems for coupling or separating cosmonautic vehicles or parts thereof B64G1/64)} · CPC title

• F42B15/36

  Means for interconnecting rocket-motor and body section; Multi-stage connectors; Disconnecting means · CPC title

• B64G1/6455

  Pyrotechnics; Using heat · CPC title