3 ms·
Hummingbirds flap their wings at 60 Hz or they drop like a rock. Some flying birds cannot glide at all. Flap frequency is directly related to the size of the bi
by starpilot 8y ago
Hummingbirds flap their wings at 60 Hz or they drop like a rock. Some flying birds cannot glide at all. Flap frequency is directly related to the size of the bird, so that there's optimal matching of Reynolds number effects.
- YeGoblynQueenne 8y agoI don't know what Reynolds number effects are. Hummingbirds are a special case, if I understand correctly; they fly like insects, most of which can't glide. So maybe the analogy about planes should be with insects, not birds? "Planes don't flap their wings like insects".