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I fly quite a lot and have never seen this? mostly norwegian, SAS easyjet and ryanair. Is it a US thing? I'll definitely be on the lookout next time I fly though but yeah. Maybe its not every window?
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And then to answer the follow-up, the double panes are not for safety in case one breaks. They’re for thermal insulation.
doesnt mean the inside one isnt there to protect the outside one.
The inner pane is typically half the thickness of the outer pane.
So whilst you could argue it cold be seen as a failsafe, I would say its primary purpose remains "double glazing" insulation.
The OAT at 30–40,000ft is very low and there is a lot of combined window area. So the importance of insulation is not to be underestimated. In particular on newer aircraft where efficiency is the name of the game in their design.
I fly quite a lot and have never seen this? mostly norwegian, SAS easyjet and ryanair. Is it a US thing? I'll definitely be on the lookout next time I fly though but yeah. Maybe its not every window?
https://www.faa.gov/lessons_learned/transport_airplane/accid...
Earlier quoted context omitted.
doesnt mean the inside one isnt there to protect the outside one.
> doesnt mean the inside one isnt there to protect the outside one. The inner pane is typically half the thickness of the outer pane. So whilst you could argue it cold be seen as a failsafe, I would say its primary purpose remains "double glazing" insulation. The OAT at 30–40,000ft is very low and there is a lot of combined window area. So the importance of insulation is not to be underestimated. In particular on new…
Earlier quoted context omitted.
yeah, but some people don't want to, or can't watch a video, and prefer reading.
I think their point is why not have an actual source?
Earlier quoted context omitted.
doesnt mean the inside one isnt there to protect the outside one.
> doesnt mean the inside one isnt there to protect the outside one. The inner pane is typically half the thickness of the outer pane. So whilst you could argue it cold be seen as a failsafe, I would say its primary purpose remains "double glazing" insulation. The OAT at 30–40,000ft is very low and there is a lot of combined window area. So the importance of insulation is not to be underestimated. In particular on new…
so if I block it with my finger from takeoff to cruise I can create a little explosion? Or is the issue the repeated cycles of pressure weakening the material over time?
I fly quite a lot and have never seen this? mostly norwegian, SAS easyjet and ryanair. Is it a US thing? I'll definitely be on the lookout next time I fly though but yeah. Maybe its not every window?