https://ghostarchive.org/archive/kyqWG
At least five drone shows have been canceled, or have paused the use of the systems, after several drones struck a crowd at a holiday show in Orlando on December 21.
Universal Orlando, Orlando World Center Marriott, the cities of Dallas and Austin, Texas, and a New Year’s Eve event in New York City’s Central Park have either canceled drone shows or the drone components of larger holiday events following the incident.
It is unclear which companies were under contract to produce the shows in each location.
Footage captured on December 21shows drones colliding with each other before falling from the sky during a holiday show at Lake Eola Park. Some drones fell into the lake, some onto the ground and some into areas where a crowd was watching.
Among them was a 7-year-old boy who was struck in his chest by one of the drones. He underwent emergency heart surgery, according to a GoFundMe campaign posted by his family, who spent Christmas in the hospital as he recovered. CNN has reached out to his family for an update on his condition.
The videoshowed several red and green drones crashing into one another before hitting the ground, in what the city described as “technical difficulties,” following the incident.
And as with anything, there are exceptions:
https://youtu.be/TnGhEInTXYc
One of the rare ones that CAN control the pitch of the blades. You don’t see this often because it greatly increases cost, weight, and complexity for not that much benefit.
If you’re going to go full collective on a quad, the only real reason to do that is because you want to spin up your rotors to higher head speed. (aka, you’re trying to set speed records.)
The reason for this is because if your rotor speed starts going transonic, when the rotor is retreating, it’s slower and that causes massive amounts of flutter. (and excessive flutter causes shattered rotor blades. Or worse… sheared masts.)
but if your goal is to just go freaky fast… getting rid of the tail rotor and flopping so the rotors are more like “propellers” remove this problem.