Quote Originally Posted by Steve Jeff View Post
Yes and all my examples were related to a windshear event, although I said abrupt/sudden change instead of using the term "wind shear". So, all what I ask is windshear, not gradually change. Well, why is there a change in airspeed when it shifts in direction and there is no airspeed change when it shifts in speed? This is what you seem to say and it makes no sense for me. Maybe I'm too dumb, please explain me why is so to clarify it.
15 kts of headwind shearing to 15 kts of tailwind does not arthmetically add up to 30 kts because the 15 kt headwind vector is not part of the original airspeed measurement.