Why do helicopters/choppers need to do circles in the air before landing?
In: Engineering
Circling is the most compact (in terms of land overflown) was to descend. You can go down more quickly than just down-hovering. As an added bonus is allows the pilot an excellent opportunity to scan the landing zone for obstacles and convey to people (and animals) on the ground where some helicopter stuff is about to occur so they can clear out.
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