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0 pointsHPsquared2y ago0 comments

Rule of thumb is that 1 kn ≈ 100 ft/min.

So 3500ft/min is about 35 knots vertical speed. Not much compared to the horizontal speed, which is closer to 500 kn.

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2 comments · 1 top-level

cameldrv2y ago· 1 in thread

40mph straight down is a pretty fast rate of descent. That said there’s nothing inherently unsafe about it. If you’re losing cabin pressure, you really want to be at a breathable altitude ASAP.

HPsquaredOP2y ago

Yeah it's definitely steep, but just to put it in perspective it's something like a 7% gradient

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