CRYO VIBRATION

 CRYO VIBRATION

The Herschel ESA spacecraft was launched at low temperature to reduce cooling fluid consumption in orbit. Therefore, focal instruments had to be vibrated at low temperature similar to the temperature encountered during the launch phase.

A temperature of 20 K on the specimen had to be achieved before starting the test.

The facility is made of a vacuum vessel with a flat bottom part attached firmly to the ground of the clean room.
The vessel itself surrounds the vibration table of the shaker.
Six feet go through the bottom plate of the vessel and the tightness is done by bellows that connect the moving part that is the vibration interface to the static part which is the vessel. These bellows allow the relative movement of those parts.
Inside the vessel, around the vibration interface welded box, is installed a thermal tent whose aim is to obtain the given temperature on the specimen. It is made of a double wall shrouds fed with Liquid Nitrogen and Helium.
The whole equipment is designed to be compatible for both the transversal vibration tests and the vertical test.




Back


 ON FOCUS - Diamond Turning

Advanced Mechanical and Optical Systems (AMOS) manufactures small optical pieces by diamond turning mainly for infrared applications but also, after post polishing, for visible or ultraviolet. Concave or convex mirrors up to 500mm can be machined with extreme asphericities....
More

 LASTNEWS

Press release - Sentinel 2B - March 2017

Sentinel 2B: Belgian know-how soon in orbit to protect and serve the people  


More

Really sharp

 « Really Sharp » are the first words that came up after viewing the first pictures !


More

Press Release - Juno - Sept 2016

Juno spacecraft: AMOS’ mirrors in orbit around Jupiter


More