Patent ID: 8104955

Claim:
A total air temperature probe comprising: an airflow inlet; a primary airflow passage through the probe; a sensor flow passage connected to the primary airflow passage, wherein the sensor flow passage is oriented at an angle θ of less than five degrees relative to a normal perpendicular to a mounting surface of the probe; a cross-port extending laterally across the probe; a plurality of bleed ports between the primary airflow passage and the cross-port; an aspiration aperture in the cross-port coupling the cross-port to an internal cavity of a strut of the probe, wherein the aspiration aperture is substantially centered within the cross-port to provide symmetrical deicing heater error behavior of the probe during changes in angle of attack; an aspiration tube coupling the internal cavity of the probe to a pressure source; wherein the aspiration aperture in the cross-port is dimensioned such that an area A aspiration of the aspiration aperture falls within a prescribed minimum and maximum range as characterized by the relationship: K 1 ⁢ ∑ i ⁢ ⁢ A exit i ≤ A aspiration ≤ K 2 ⁢ ∑ i ⁢ ⁢ A exit i where, K 1 <K 2 ; and A exit i is the sum of exit areas on the probe.