Live data from Hacker News

Drones Raining from the Sky in Zhengzhou

twitter.com

1–10 of 131 posts

Re: Drones Raining from the Sky in Zhengzhou

#7

It's hard to tell from the video but arent they supposed to fail gracefully in a controlled descent and not drop like rocks?

Yeah, kinda points to battery failure, but "our rivals haxxored us!!!" is certainly a nice cover story for the company and the local government.

Re: Drones Raining from the Sky in Zhengzhou

#8
post #5

It's hard to tell from the video but arent they supposed to fail gracefully in a controlled descent and not drop like rocks?

It seems like most are doing that but some are dropping rapidly, although not in a freefall.

Autorotation? Sorry I don’t know enough about drone aerodynamics, but it’s something seen in helicopters.

https://en.wikipedia.org/wiki/Autorotation

Re: Drones Raining from the Sky in Zhengzhou

#9
post #5

Earlier quoted context omitted.

It seems like most are doing that but some are dropping rapidly, although not in a freefall.

Autorotation? Sorry I don’t know enough about drone aerodynamics, but it’s something seen in helicopters. https://en.wikipedia.org/wiki/Autorotation

Not nearly enough energy in the rotor system of that kind of drone to manage an autorotation landing; and they lack a freewheeling system in any case.

Re: Drones Raining from the Sky in Zhengzhou

#10

It's hard to tell from the video but arent they supposed to fail gracefully in a controlled descent and not drop like rocks?

Yeah, kinda points to battery failure, but "our rivals haxxored us!!!" is certainly a nice cover story for the company and the local government.

In China, both are equally probable.
Post reply on HN