GrabCAD 模型信息
Nitinol star shade - Nitinol based joints, truss and reflective panels for star shade · 模型 101639
The idea is to use nitinol hexagonal panels of length 2.25 meters Each hexagonal panel is connected to other by nitinol junctions as shown in figure. Nitinol junctions are preconditioned such a way that when the junction reaches transition temperature, it makes the panels horizontal. These panels again were supported by Nitinol bars which forms trusses and these trusses will be in tight packing condition when it is packed in a rocket. Once everything goes in space and when it is ready to open in space. We just need to send current(DC) through Nitinol junctions and truss (bars). The entire structure opens up and covers the area required. Use of nitinol to cover the required space can be done in multiple ways or in multiple design. Please see them in alternate variations. Nitinol can be activated multiple time so it doesn’t matter if the star shader oriented multiple times. The hexagonal plates shown in before slide are of size that can be easily packed in a rocket. Each hexagonal plate is attached to a Nitinol junction with adhesive bonding or welding based on material used for panels. Each Nitinol junction has electric connections. After the structure is deployed in space, we can pass electricity through nitinol junctions which will heat up the nitinol to transition temperature and regains to its preconditioned shape. DC current can be easily generated through solar panels and a micro control is used to heat the required junctions in a sequence. Shape of individual panel need not be in hexagonal shape. It can be of any shape like triangles etc. Note: i am not able to upload PPT so PDF version and videos were uploaded
- 格式
- STEP / IGES、Snagit、Other、Rendering
- 分类
- Aerospace、Educational、Tech
- 标签
- nasaultralightshade
- 数据更新
- 2026-09-24T13:21:14Z
