Shape memory alloy can eliminate its deformation at low temperature after heating. Although there are many materials with shape memory performance in nature, the performance of shape memory alloys is second to none.
This "memory" superpower has many successful applications in the aerospace field. The huge antenna on the artificial satellite can be made of memory alloy material-before launching the satellite, the technician folds the parabolic antenna and installs it into the satellite body. After the rocket lifts off and sends the satellite into the predetermined orbit, it only needs to be heated. The folded satellite antenna can naturally unfold by virtue of the "memory" function and restore the parabolic shape to work.