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Electronics/Helicopter Rotor Blades.

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Question
Dear ZZ

Can there be more than one pair of Rotor blades in a Helicopter?.

If yes, What are the advantages or disadvantages?.

Thanks
Prashant

Answer
There are many combinations of rotor blades for heli vehicles large and small.  

Please just google for them and you'll find several web pages dealing with the subject.  Mostly, at the toy and drone level where much experimentation is going on.

For big, full scale helicopters the addition and complexity for extra blades is a problem but some variations do exist and  you can find them easily with a google search.

It's not an electronics question so I won't go any further with it.  

Electronics

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ZZ

Expertise

Electronics questions about AC, DC and digital theory.

Experience

Graduate electrical engineer with over 40 years in electronic design, manufacturing, project organization and patent review. Experience in fields of industrial and consumer electronics (audio, video, acoustics, etc.)

Organizations
IEEE (Institute of Electrical and Electronics Engineers); Senior Life member AES (Audio Engineering Society), Fellow Life member

Education/Credentials
BSEE University of North Dakota

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