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Re: Pterosaur Track Show Bird-Like Landing

True; hence my usage of the term "dynamic stall" - which would be an unsteady stall. I originally took the term and that particular usage, if I remember, from Robert Dudley.



Michael Habib
Assistant Professor of Biology
Chatham University
Woodland Road, Pittsburgh PA  15232
Buhl Hall, Room 226A
(443) 280-0181

On Aug 19, 2009, at 5:32 PM, jrc wrote:

Keep in mind that none of these animals use a steady-state stall to land. Can't generate a high enough lift coefficient that way. All are using unsteady effects and are not stalling in the sense that an airplane stalls.

Every pterosaur almost
assuredly used a dynamic stall before landing - bats do, birds do, and
all living unpowered vertebrate gliders (like Draco lizards and
gliding squirrels) do so, as well.