Discussion
Statement I: Position error is largest at low speed and high angle of attack.
Statement II: The local pressure at a static port varies with the flow field around the fuselage.
In the light of the above statements, choose the correct answer.
Answer: B
Correct answer: Both Statement I and Statement II are correct
Both are true and the second explains the first. The pressure at a static port is the local pressure in the flow around the fuselage, not the free stream pressure, and the difference depends on the flow field. At low speed and high angle of attack the flow over the fuselage is most distorted, so the discrepancy is largest - which is exactly the regime in which an accurate airspeed matters most.
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