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Ballscrew Temperature v's current usage plots

Ballscrew Temperature v's current usage plots

Ballscrew Temperature v's current usage plots

(OP)
Hi

I am currently working on a quantification exercise on ballscrews and their ability to drive focus lens assemblies at very low temperatures (-46ºC), acheiving a speed of 0.1m/sec.  I am experienceing increased voltage usage at below -20ºC and am unable to achieve the required speed, which reduces by 40%.  

Does anyone know how to minimise static and dynamic friction at these low temperature.  Lubrication is minimum due to migration of the media onto the optics.

I hope you can help.

Regards,

Dean250776

RE: Ballscrew Temperature v's current usage plots

NASA has a Tech Tips (or something like that) website that should (hopefully?) have some useful information buried on it somewhere.  I know that low temperature and low contamination lubrication is a huge issue for most space hardware.  It is a problem that was solved many years ago.


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