[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: The aerodynamics of birds



Although I have the greatest respect for Wei Shyy (and, he's a nice guy to boot), the statement that

"Select military aircraft can withstand gravitational forces of 8-10 G. Many birds routinely experience positive G-forces greater than 10 G and up to 14 G."

sounds as though it may have been taken out of context by the reporter. The 8-10 G limit on military fighters is generally because that is the most that the occupants can withstand while remaining functional -- it has nothing to do with what the machines themselves can be built to withstand -- but, there is no point in actually building the fighters heavier so that they can withstand loads that would incpacitate or kill their occupants. I'm not sure that I'd expect a bird to routinely experience positive g-forces of 10-14 G either. Mike Habib, what sorts of load and safety factors are you seeing on avian long bones?

JimC


----- Original Message ----- From: "GUY LEAHY" <xrciseguy@q.com>
To: "Dinosaur Mailing List" <dinosaur@usc.edu>
Sent: Saturday, February 09, 2008 8:01 PM
Subject: The aerodynamics of birds




No doubt about it... birds are biologic machines... :-)

http://www.ns.umich.edu/htdocs/releases/story.php?id=6312

Guy Leahy