3 ms·

Attachment isn't as much of an issue with paper planes since the small size and low speed give much more favorable Reynolds numbers.

• kqr 3y ago
  Could you elaborate on that, please? This is just at the edge of my understanding and I'd like to learn more.
  • skykooler 3y ago
    You can see the effect in the second animation of the linked page, but the basic idea is the lower the Reynolds number, the less likely for flows to separate and become turbulent. Shrinking the scale and slowing the airspeed both lower the Reynolds number, so paper planes have vastly different aerodynamics to full size aircraft.
    • aredox 3y ago
      And even further, insects have also vastly different aerodynamics, which explains why flapping flat wings works at insect-size and not at bird-size (nor plane-size).