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For those of us who aren't aeronautical engineers... if you just covered a normal expressway with a half tube, wouldn't the air start moving along with the vehi
by bsdetector 11y ago
For those of us who aren't aeronautical engineers... if you just covered a normal expressway with a half tube, wouldn't the air start moving along with the vehicles and greatly decrease the drag at high speeds, making higher speeds more economical? Or at what point does the vacuum and ratio of vehicle to tube size make hyperloop work out, but a simple enclosed highway doesn't?
- Swannie 11y agoIANA engineer... Only if the vehicles are self propelling from the ground, and if you refer back to trains really they are just pushing air in front of them, with some air escaping past them. If there were not ventilation systems to allow the air behind the train to be filled, the train would need to work harder to essentially pull the air behind it. At least, that's my understanding. If the vehicles are not self propelling from the ground, and propel with air, like the original hyper-loop proposal, they are actually pushing air backwards to their direction of motion, which would stop any such forward moving air flow develop.