3 ms·
^^I read this a lot on hyperloop forums and articles, but it doesn't really matter. What pressure constitutes a vacuum ? What pressure do you mean by low pressu
by rrrazdan 10y ago
^^I read this a lot on hyperloop forums and articles, but it doesn't really matter. What pressure constitutes a vacuum ? What pressure do you mean by low pressure?
Zero pressure(perfect vacuum) is impossible to do in life. So what these articles/videos mean by vacuum is sufficiently low pressure that can reduce drag and that is essentially impossible to do across a tube of any meaningful size.
- pitaj 10y agoIncorrect. It's not "essentially impossible" as it's very far from a vacuum, or even a near-vacuum. The Hyperloop paper explains why it doesn't require high cost to build the tube or maintain the vacuum within with only pumps at the two ends of the tube.