On 07/02/2021 10:44, The Natural Philosopher wrote:
https://www.youtube.com/watch?v=4eFD_Wj6dhk


OK, it's going like a bat out of hell, but it's not clear what the
strategy would be, or how the speed was proved. Are they claiming that
speed in level flight? I'd have thought that to get to that sort of
speed they would want to go very high, and then attempt a near-vertical
dive, like a peregrine. It didn't look to me to have an ideal
aerodynamic shape either.