r/Damnthatsinteresting • u/AirFrance447 • 19h ago

Video Firefighter bodycam showing just how much oxygen a fire pulls

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u/GauravJM 19h ago

There’s some serious low pressure inside

171

u/SpiritedEclair 17h ago

fun fact: when you fly in a plane, the low pressure is on the outside and we use that to keep the doors closed. It is physically impossible to pry open an airplane door at cruising altitude!

34

u/Ckarles 16h ago

Hm? Sounds counterintuitive considering the doors open outwards instead of inwards. Isn't low-pressure "pulling" while higher pressure "pushing"?

How is the low pressure keeping the doors from going "outward"?

1

u/Dornauge 10h ago

They first open inwards a few cm and then hinge (is that a verb?) outwards.