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3D Printed 5.5-Meter-Titanium Rocket

wallpapers Tech 2020-07-20
With the rise of private space companies such as SpaceX and Blue Origin, new technologies and operating concepts are rapidly changing the development of commercial aerospace. Low cost is a significant advantage for private space companies. To achieve smaller cost launches, 3D printed rockets have become the direction of many companies.
 
At the end of 2019, at the world's largest 3D printing trade show in Frankfurt, Germany, a company exhibited a 5.5-meter-tall titanium alloy rocket it manufactured, which is currently the world's most massive 3D printed titanium alloy rocket. This rocket is a scaled-down model of a 27-meter rocket made by Gilmour Space Technology. The entire manufacturing process took only 27.6 hours. Using superior titanium and other high-performance alloys, the company can build a full-size, complete rocket in 165 hours.

 

Ball bearings and roller bearings are essential components of rockets. The ball bearings of ball bearings are installed between the inner and outer steel rings and can withstand large loads. He also called ball bearing. Roller bearings rely on rolling contact between the main parts to support the rotating parts. Different roller bearings can withstand different radial and axial forces.
 
The ball makes point contact with the bearing raceway. As the load on the bearing increases, the contact point becomes an elliptical area. The small contact area can reduce the rolling friction so that the ball bearing can adapt to high speeds while limiting its bearing capacity. The roller makes linear contact with the bearing raceway. As the load on the bearing increases, the contact line becomes a rectangle. As the contact area becomes more significant and the resulting friction becomes larger, compared to ball bearings of the same size, roller bearings can withstand heavier loads but at lower speeds.


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