[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: was: Pterosaur.net now: pteroid
Actually, it's not constant, even when not flapping -- but it isn't
particularly large in magnitude either. I'm not going to take time right
now to quantify it exactly for any particular species, but for a 20 Kg
animal while soaring, it is on the very loose order of a half kilogram
force acting to extend each elbow. The moment arm will be roughly 1/3 the
distance from the elbow to the wingtip. For an animal with a 4.8 meter
span, that would be about 2/3 meter and would result in the elbow resisting
an extension moment on the rough order of something like 0.3 Kg-M or 2.4
ft-lb. Not enough to write home about.
----- Original Message -----
From: "Mike Habib" <email@example.com>
To: "David Peters" <firstname.lastname@example.org>
Cc: "Mark Witton" <Mark.Witton@port.ac.uk>; <email@example.com>;
"dinosaur mailing list" <firstname.lastname@example.org>; "David Hone"
Sent: Friday, January 15, 2010 11:23 AM
Subject: Re: was: Pterosaur.net now: pteroid
overextend the elbow. That is a constant force while flying.
Remember the rest of the wing is creating drag that is trying to