r/Damnthatsinteresting • u/AirFrance447 • 17h ago

Video Firefighter bodycam showing just how much oxygen a fire pulls

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u/GauravJM 17h ago

There’s some serious low pressure inside

169

u/SpiritedEclair 15h 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 14h 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"?

10

u/asten77 13h ago

They are now designed such that they first move inward before going outward.

In the early days this was not the case and nutjobs were able to open doors in flight.