How can I get Aircraft main rotor blade dimensions? Are there any free online sources?

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I would like to simulate aircraft's main rotor blade under free vibration. where can I get the dimensions of rotor blade?

Мykhailo Matiychyk

Good afternoon. First you need to calculate the extreme cross section of the screw to the Mach number. So that there is no cavitation. That is, take the number of shaft revolutions and a certain radius. And count, so as not to go to supersonic. This will be the maximum size allowed. And you also need to consider the heights at which you want to act. And then a typical scheme, for example Aleksandrov or another author. Best regards, Mikhail Matiychik.

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