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A strut or boom mounted probe having separate pressure sensing ports or sets of ports axially spaced on the side of the probe. The ports are located on the probe so that at a reference angle of attack, normally zero angle of attack, the static pressure conditions at both of the sensing port sets are

A strut or boom mounted probe having separate pressure sensing ports or sets of ports axially spaced on the side of the probe. The ports are located on the probe so that at a reference angle of attack, normally zero angle of attack, the static pressure conditions at both of the sensing port sets are at a known relationship. As the angle of attack varies from the reference angle, the sensed pressures at the port sets differ, with the difference increasing with increasing angle of attack. The sensor normally has a pitot pressure opening at its forward extremity, although a separate pitot pressure probe may be used if desired. A single probe is capable of providing pitot pressure, static pressure and a differential pressure signal proportional to angle of attack.

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