A joint that is separable by detonating a detonating cord within an expanding tube. The joint is held together with a set of bolts. Each bolt is retained on one side of the joint with a lever. The expanding tube is retained under an arm of each lever. When the detonating cord is activated, the tube expands and exerts a force against an arm of each lever, thereby breaking the set of bolts, and allowing the joint to separate. In one example, the separable joint is used to retain a payload fairing on a launch vehicle so that the fairing can be jettisoned during flight.

A joint that is separable by detonating a detonating cord within an expanding tube. The joint is held together with a set of bolts. Each bolt is retained on one side of the joint with a lever. The expanding tube is retained under an arm of each lever. When the detonating cord is activated, the tube expands and exerts a force against an arm of each lever, thereby breaking the set of bolts, and allowing the joint to separate. In one example, the separable joint is used to retain a payload fairing on a launch vehicle so that the fairing can be jettisoned during flight.

The invention relates to a device and a method for the connection and linear separation of two elements, such as the two stages of a spacecraft, consisting in using a tube containing a pyrogenic-type material and a glue arranged around the tube, particularly in contact with the elements. The pyrotechnic triggering of the pyrogenic material causes heating and the melting or carbonisation of the glue and the separation of the two elements.

The invention relates to a device and a method for the connection and linear separation of two elements, such as the two stages of a spacecraft, consisting in using a tube containing a pyrogenic-type material and a glue arranged around the tube, particularly in contact with the elements. The pyrotechnic triggering of the pyrogenic material causes heating and the melting or carbonisation of the glue and the separation of the two elements.

To enable a local connection with separation on command, a connection device (20) comprises a first base plate (24), a first connection wall (22) forming a protuberance from the first base plate (24) and having an internal surface (22A) delimiting an internal volume (V) located on the side of the first base plate, on a first side, and a first connection surface (22B), a second base plate (28), a second connection wall (26) fixed to the second base plate on a second side and with a second connection surface (26A) covering the first connection wall (22) so as to form a space (S) between the first and second connection surfaces, a bonding layer (30) arranged in the space and extending along at least two distinct directions, and a heat generating material (32) arranged in an internal volume so as to enable heating of the bonding layer.

Separation device assemblies include a first plate defining respective contact surfaces and engagement surfaces and a second plate defining a respective contact surfaces and engagement surfaces. A fracture groove is located on separation walls of the first and second plates. A first end member, a second end member, and the separation wall of the first plate define a first plate expansion device channel and the second plate defines a similar second plate expansion device channel. When assembled, the first plate and the second plate form an expansion device cavity and the first and second plates form a frangible joint. The respective engagement surfaces are configured to engage with receiving channels of attachable mounting devices.

Separation device assemblies include a first plate defining respective contact surfaces and engagement surfaces and a second plate defining a respective contact surfaces and engagement surfaces. A fracture groove is located on separation walls of the first and second plates. A first end member, a second end member, and the separation wall of the first plate define a first plate expansion device channel and the second plate defines a similar second plate expansion device channel. When assembled, the first plate and the second plate form an expansion device cavity and the first and second plates form a frangible joint. The respective engagement surfaces are configured to engage with receiving channels of attachable mounting devices.

Separation device assemblies are provided. The assemblies include a plurality of first segment elements, each first segment element having an attachment portion and a frangible portion, the attachment portion of the first segment elements is arranged to fixedly connect to a first structural component and at least one second segment element having an attachment portion and a securing portion, wherein the attachment portion of the at least one second segment element is arranged to fixedly connect to a second structural component. At least two of the plurality of first segment elements are attached to the at least one second segment element adjacent to each other and a first segment joint is formed between adjacent first segment elements. An expansion device cavity is formed between the attached first and second segment elements.

Separation device assemblies are provided. The assemblies include a plurality of first segment elements, each first segment element having an attachment portion and a frangible portion, the attachment portion of the first segment elements is arranged to fixedly connect to a first structural component and at least one second segment element having an attachment portion and a securing portion, wherein the attachment portion of the at least one second segment element is arranged to fixedly connect to a second structural component. At least two of the plurality of first segment elements are attached to the at least one second segment element adjacent to each other and a first segment joint is formed between adjacent first segment elements. An expansion device cavity is formed between the attached first and second segment elements.

Separation device assemblies are provided. The assemblies include a plurality of first segment elements, each first segment element having an attachment portion and a frangible portion, the attachment portion of the first segment elements is arranged to fixedly connect to a first structural component and at least one second segment element having an attachment portion and a securing portion, wherein the attachment portion of the at least one second segment element is arranged to fixedly connect to a second structural component. At least two of the plurality of first segment elements are attached to the at least one second segment element adjacent to each other and a first segment joint is formed between adjacent first segment elements. An expansion device cavity is formed between the attached first and second segment elements.