What are the main characteristics of "memory" alloys?
志联
2025-04-24
To implement the lunar antenna plan, a large-diameter parabolic antenna must be transported to the moon via a spacecraft. However, how can such a large antenna be fitted into the very small interior of a spacecraft? NASA used shape memory alloy technology. This alloy material undergoes significant changes in its physical properties under specific temperature conditions. It is an alloy with a unique shape memory function. After pre-deforming the alloy, when the pre-deformed shape memory alloy is heated and its temperature exceeds the alloy's phase transition temperature, the shape memory alloy material will recover to its pre-deformed shape. NASA scientists used shape memory alloy to create a parabolic lunar antenna at room temperature, then crumpled it into a small ball with a diameter of less than 5 centimeters, placed it in the Apollo 11 cabin, launched it to the moon, and heated it with sunlight on the lunar surface to restore it to its original parabolic shape. In this way, a large antenna can be transported using the limited space of a spacecraft cabin.
Previous:
Related News
Hotline:
Contact Email:
Address:
Building 19, Liandong U Valley, Sanhe Subdistrict, Huiyang District, Huizhou City, Guangdong Province, China
Follow WeChat
Add WeChat
Power by:www.300.cn | Tag | Privacy Policy | City List