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EB66 | 2 years ago

> Is flying in a thin atmosphere harder?

Yep. Setting maths and motors aside... it's why helicopters have service ceilings and why no one has built a helicopter that can fly away into the stratosphere.

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londons_explore|2 years ago

Isn't that just because a helicopter design that can fly in the stratosphere wouldn't be able to fly at sea level?

Just like the mars helicopter cannot fly on earth.