Thermal measuring and testing – Temperature measurement – Of molten metal
Reexamination Certificate
2005-01-11
2005-01-11
Gutierrez, Diego (Department: 2859)
Thermal measuring and testing
Temperature measurement
Of molten metal
C374S135000, C374S148000
Reexamination Certificate
active
06840672
ABSTRACT:
A total air temperature (TAT) probe for measuring TAT includes an inlet scoop which receives airflow from free stream airflow moving toward the inlet scoop from a first direction. A first portion of the airflow entering the inlet scoop exits the probe through a main exit channel. A second portion of the airflow enters a TAT sensor flow passage, which extends longitudinally along an axis. This axis is oriented to form an angle of less than 90 degrees with the first direction from which the free stream airflow moves toward the inlet scoop. A sensor assembly extends longitudinally in the sensor flow passage and measures a total air temperature of airflow through the sensor flow passage. By increasing the angle through which the internal air turns, better inertial extraction of ice and water particles is realized. As a result, sensor clogging from accreted ice is significantly reduced. A second improvement is achieved by repositioning the sensor element to be more in-line with the internal airflow direction. This helps lower DHE by minimizing heated boundary layer spillage onto the sensing element.
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Truman M. Stickney, Marvin W. Shedlov and Donald I. Thompson, “Total Temperature Sensors, Technical Report 5755, Revision C”, Rosemount Aerospace/BFGoodrich, Jan. 1994.
Ice Paul A.
Willcox Charles R.
Gutierrez Diego
Jagan Mirellys
Rosemount Aerospace Inc.
Westman Champlin & Kelly P.A.
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