You are right and wrong. You do get lift from the bottom side due to impact with airflow. But you also get lift (I've seen 2x more ) from the top side of the wing from higher speed =low pressure. This can come from the shape (camber) at zero angle of attack, and from even a *symmetric* airfo...
You are right and wrong. You do get lift from the bottom side due to impact with airflow. But you also get lift (I've seen 2x more ) from the top side of the wing from higher speed =low pressure. This can come from the shape (camber) at zero angle of attack, and from even a *symmetric* airfo...