What is the airspeed velocity of an unladenswallowdragon?
This amusingly reminds me of my idea of a unit for long distances that might be used by a draconic fantasy-realm civilization. Think the idea that came to mind was somewhere betweeen 40 and 60 miles for whatever the aerial equivalent of a forced march would be. So I guess 50 MPH. :V
I'll add to that. What kind of Gs can a dragon withstand in a controlled dive?
Way more than something that big SHOULD be able to handle.