BTW - here is a different video of the multicopter crash. Not as slick but far more informative.
You can hear a LOT of wind noise. I suspect the big box under it added so much extra drag for horizontal flight that as it tried to fly forward to fight the wind, it became uncontrollable.
I figure that they scheduled this public demonstration flight and felt too much pressure to delay it when the wind was too strong. Learning two things the HARD way:
1- Delay of a public event is bad, Total Disaster is FAR WORSE (Challenger shuttle accident).
2 - Test fly in all conditions that the vehicle/model is supposed to be operational. I suspect they never test flew it (with that box attached anyway) in 30-50 mph (whatever) winds, because........... it would be too risky.
[video=youtube;k20zAeRhCgw]https://www.youtube.com/watch?v=k20zAeRhCgw[/video]
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