So – clearly quadcopters are more stable (see all the drones), so why aren’t actual helicopters all quad copters?
In: 5
Quads are LESS stable than conventional helos, they are only stable because they are computer stabilized.
Quads only makes sense at toy size because it’s mechanically cheap to manufacture and it’s inferior power efficiently isn’t that big of an issue with lighter toys.
As soon as the size comes up, quads efficiency problem quickly becomes apparent and at this size, it is possible to build complex rotor articulation systems to effectively control a single rotor that is not only more efficient, but also safer to operate. Quads have no mechanical redundancy, so it’s going to be either a hexa or octo before anyone is comfortable flying on it.
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