清徐涸蕉机械设备有限公司

What are the main characteristics of "memory" alloys?

[ 信息發(fā)布:本站 | 發(fā)布時間:2019-09-12 | 瀏覽:2469 ]


In order to implement the lunar antenna plan, a large diameter parabolic antenna must be transported to the moon ball by an aerospace aircraft. However, how can such a large antenna be equipped with a very small space shuttle inside the person? The U.S. Aerospace Administration uses the shape memory alloy technology. This alloy material will undergo significant changes in its physical properties under specific temperature conditions. It is an alloy with a unique shape memory function. After the initial deformation of the alloy, When the pre-deformation shape memory alloy is heated so that the temperature exceeds the phase transition temperature of the alloy, the shape memory alloy material will return to the shape before the deformation. NASA scientists made a parabolic lunar antenna from a shape memory alloy at room temperature, then kneaded it into a small group of less than 5 cm in diameter and launched it into the moon in the capsule of Apollo 11. Heated by sunlight on the moon surface to restore it to its original parabolic shape. This will allow the large antenna to be transported in a space limited space shuttle cabin.

敦煌市| 桓台县| 安西县| 荆州市| 图木舒克市| 隆回县| 板桥市| 犍为县| 旺苍县| 巍山| 南陵县| 布拖县| 广丰县| 沂水县| 宜阳县| 瓮安县| 安达市| 永善县| 尼勒克县| 左云县| 张家口市| 武邑县| 图木舒克市| 安陆市| 垣曲县| 长寿区| 嵊州市| 项城市| 尼木县| 五寨县| 黄陵县| 松江区| 义乌市| 大埔区| 隆昌县| 方城县| 抚宁县| 松原市| 开鲁县| 崇仁县| 芜湖市|