3 ms·
The shape is quite similar to Shinkansen, which have it to limit compression waves when entering tunnels at high speeds.
by masklinn 4y ago
The shape is quite similar to Shinkansen, which have it to limit compression waves when entering tunnels at high speeds.
- londons_explore 4y agoThis sounds like the reason... I can imagine that 100 year old bridges have a habit of dropping bricks on trains that send massive pressure waves every 10 minutes all day long...
- masklinn 4y agoBridges are not really the issue, they have a lot of space to dissipate the shockwave. However the manufacturer might be expecting a significant business through the alps, given the base tunnels Switzerland has been digging. That would make high-speed tunnel entry a larger concern than it’s historically been for the french market (most of the tall mountains are on the edges of france so high speed lines don’t have a surfeit of tunnels, probably unlike japan which is rather mountainous).
- Jiejeing 4y agoYes, in fact the first deployment of these trains will be over the france-italy frontier (despite what this article says, I read the opposite in french news, and premiering a TGV on the Paris network makes no sense at all).