What's the translation of “flame trench" in French?
“Flame trench" in English can be defined as follows:
The Flame Trench is the big hole used to manage the flame from the rocket initially. Here's a shot of the Space Shuttle's Flame Trench:
Google translate translates "flame trench" as "tranchée de flammes", but Googling "tranchée de flammes" returns fewer than 100 results which makes me wonder whether there exists a more common phrase. No luck on https://www.linguee.com/english-french/search?source=auto&query=flame+trench either.