Rosemount Inc.

Eric A Hedberg

Jeffrey M Setterholm

The present invention relates to a air data sensing probe that has a cylindrical barrel joined to a contoured strut section. The strut has leading and trailing edges formed along curved paths, and supports the cylindrical barrel at a position spaced from a mounting surface and facing upstream of relative air movement. The strut has a rounded leading edge, and is generally ogival-shaped in cross-section. There is a blended, relatively quickly-changing transition section to blend the trailing end of the cylindrical barrel into the ogival-shaped strut section so that the probe has reduced weight of the strut and drag, and through reduction of the cross-sectional area and rounding the strut leading edge, has enhanced anti-icing performance.

Aerodynamically shaped probe

Aerodynamically shaped probe and strut

Aerodynamically shaped short probe

A short, strut mounted, multifunction air data sensing probe providing reduced drag, weight and radar cross-section has a modular internal construction providing a multiple passageway pressure assembly to transfer sensed pressure signals from individual sensing ports on a probe barrel to pressure carrying conduits extending into the mounting- strut of the probe. The modular construction eliminates the need for having interior chambers made by fixing a series of difficult to locate bulkheads on the probe, interior, with separate lines running from each of the chambers to provide the pressure signal from each of the ports. The modular construction also permits mounting a deicing heater on internal parts other than the outer probe shell so that the manufacture of-the probe is further simplified, and the types of material used for the probe shell can be changed without concern about heater mounting.

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Saint Paul, MN, United States of America

Eric A Hedberg