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→Disadvantages
====Disadvantages====
They are not yet tested extensively in space and are in development, some parts are too small and difficult to manufacture hence are expensive currently. Also they may be susceptible to external rise in temperature and cause untimely deployment
----More information about Shape Memory Alloys and their space heritage can be found [[Filehttp:SMA2//www.esa-tec.jpg|frame|center]eu/space-technologies/from-space/new-shape-memory-alloy-for-high-transformation-temperature/ here].
=== Paraffin release mechanism ===