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Student Engineers Build Hyperloop Test Pods That Set a New Speed Record (bbc.com)
Engineering students from the Technical University of Munich have won a hyperloop competition that aims to refine the technologies that could underpin the super-fast transport system. According to the BBC, "The team's pod hit 457km/h (290mph) on a 1.2km (0.75 mile) test track." This marks the third win in a row for the team. From the report: In the latest round of the competition, the Munich team, WARR Hyperloop, outpaced rival capsules, which could manage speeds of only 88mph (Delft University) and 55mph (EPF Loop, from Switzerland), to beat its own record speed, 323km/h, set in the second competition, in September 2017. In a change from earlier competitions, all the pods being tested this time had to be self-propelled. Previously, the pods could rely on a SpaceX-built "pusher" vehicle that helped them travel down the test tube.
Just the opposite. Pushing air down the tube is very energy intensive to get it up to speeds. The air will drag on the tube, so no, that is not good. Finally, while it will take energy to drop the pressure, it will be little to no energy to maintain, assuming tight seals.
I prefer the "u" in honour as it seems to be missing these days.
TFS mixes mph and km/h. Poor practice to report the slower ones in mph and the fastest in km/h; it makes the difference look larger. It's large enough that you don't need to exaggerate it.
Even the TGV which is a normal rail train has hit 360mph in an experimental configuration.
SJW n. One who posts facts.