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Old 25th Jan 2023, 21:02
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tdracer
 
Join Date: Jul 2013
Location: Everett, WA
Age: 68
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What John said. The placement of Pitot tubes is pretty simple since once you're out of the boundary layer you get a good total pressure. Static pressure is far messier. You need an area of without any meaningful local acceleration of the air (such as the curvature of the nose) - ideally a long, constant diameter body section - otherwise there is distortion of the static pressure measurement due to the acceleration (or deceleration) of the airflow over a curved surface.
The 767 used pitot statics, while the concurrently developed 757 had pitot tubes with body mounted statics. Go figure...
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