Shape Memory Alloy Mechanisms for CubeSats

About this technology

Overview

Innovators at NASA's Glenn Research Center have developed lightweight and reliable mechanisms based on shape memory alloys (SMAs) for small satellites, such as CubeSats. SMAs have a unique ability to effect a reversible phase transformation, so that they can withstand being severely deformed and recovered repeatedly. Glenn's innovation, flown in a successful space mission, uses SMA components in actuators and hinging elements to improve retention, release, and deployment of crucial structures, such as solar arrays. Compared to standard devices, the SMA-based mechanisms are much smaller and lighter, do not produce debris, and require minimal power to operate, meeting the rigorous power budget for CubeSats. These SMA-based components are a key breakthrough for CubeSats and other small satellites, where their small size and weight, reusability, and reliability are mission critical. In addition, these mechanisms can be scaled up, so their benefits can be realized in larger spacecraft as well.