It moves forward rapidly as soon as the airflow over the aircraft becomes sonic. The center of pressure tends to move backward as the aircraft's speed increases from low subsonic to high subsonic. The linear distance the center of pressure travels over the operating range of Mach numbers in supersonic aircraft. At this point, the center of pressure generally moves backward along the chord. The center of pressure moves forward as the angle of attack increases until the stalling angle is reached. The linear distance the center of pressure travels along a chord over the entire range of angles of attack, ignoring the effects of compressibility and subsonic flow. Position of center of pressure as percentage of mean aerodynamic chord.The ratio of the distance of the center of pressure from the leading edge of an airfoil to its chord length.
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