Quadrotor configuration I think is the most common configuration for drones. Why has it not been made into a full-size production aircraft? I think that it could be better than helicopters as it does not need a tail.
In: Engineering
There are a whole bunch of companies working on eVTOL (Electric Vertical Take Off and Landing) aircraft. Billions upon billions of venture capital is being spent. Joby, Archer, Lillium, Wisk, Vertical, Volocopter…..
They all have more than 4 propulsive units because you have to be able to survive the loss of one to be certified to carry people.
Helicopters can auto-rotate, so they can still be controlled after loss of thrust, so even one engine can work there. This does not work on multirotors, so you have to maintain thrust to maintain control, and thus you need 6 or more stations.
It’s coming though.
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