Relative airflow over a helicopter blade
- increases at the tip.
- is unaffected by blade position.
- increases at the root.
Explanation from PART66Online
Rotational speed equals angular velocity times radius, so the relative airflow over a blade rises steadily from root to tip and is greatest at the tip. This is why blades are often twisted and tapered to even out the lift distribution. The airflow is not constant along the span.
kenguan76 asked · 4h ago
The question is "RELATIVE AIRFLOW" over a helicopter blade.
Therefore the "REALTIVE AIRFLOW" is the same along the entire span of the blade, but because of the blade twist the difference is angle of attack which is less at the tip and greater at the root.
To me the answer should be A. is unaffected by blade position
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