A pitot tube is insensitive to misalignment with the flow direction for yaw angles upto  .
Figure 2.8: Pitot Tube Placed in a Flow. |
Pitot tubes can also be used for measuring velocity in compressible gas flows. Let 1 be the far field and 0 be the mouth of the pitot tube (Figure 2.8). It is required to measure velocity at point 1. Under incompressible flow conditions Bernoulli equation can be used between points 1 and 0 to yield
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