How many propeller blades have external heating and counterweights?

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Multiple Choice

How many propeller blades have external heating and counterweights?

Explanation:
External heating and counterweights are provided on each blade of the propeller to ensure uniform de-icing and balanced operation. In the ATR configuration, the propeller has six blades, so all six blades incorporate the heating elements and the counterweights. This uniformity is essential because heating or balancing only on some blades would cause uneven ice protection and vibration. Therefore, the number of blades with these features equals the total blade count, which is six.

External heating and counterweights are provided on each blade of the propeller to ensure uniform de-icing and balanced operation. In the ATR configuration, the propeller has six blades, so all six blades incorporate the heating elements and the counterweights. This uniformity is essential because heating or balancing only on some blades would cause uneven ice protection and vibration. Therefore, the number of blades with these features equals the total blade count, which is six.

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