Quadcopters vs. Helicopters – Why 4 Blades is not Always Better

While quadcopters have become very popular in recent years, there are still some inherent limitations in the design that includes multiple motors and multiple propellers. For one thing, there is a theoretical limit in the size you could go with multiple propellers given the need for more motors. The quadcopter design was rejected years ago by the United States military for the simplicity of a sing...

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