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A device for measuring a parameter such as temperature, humidity, or the like in a fluid stream having a leading portion and a trailing portion forming an elongated longitudinal housing with a bore extending longitudinally through the portions for flow therethrough. The flow rate is internally regul

A device for measuring a parameter such as temperature, humidity, or the like in a fluid stream having a leading portion and a trailing portion forming an elongated longitudinal housing with a bore extending longitudinally through the portions for flow therethrough. The flow rate is internally regulated to a desired rate by a restriction in the bore located in the trailing portion. Where the fluid stream is air, the restriction provides for internal Mach number regulation at various flow rates. A first plurality of ports is located in the leading portion for boundary layer control. The device has one or more annular fluid passageways downstream of the first ports coupled to the bore and ported to the exterior to cooperate with the bore to provide a lower pressure area for flow therethrough, and a sensor disposed in at least one such passageway. The leading portion may incorporate anti-icing for air stream measurement. For temperature sensors, radiation shielding is provided.

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A device for measuring a parameter in a fluid stream comprising a housing having an exterior and having: an elongated longitudinal exterior shape and a bore defined in the housing along the shape for flow of the fluid stream therethrough; a leading portion at a first end of the bore; a trailing port

A device for measuring a parameter in a fluid stream comprising a housing having an exterior and having: an elongated longitudinal exterior shape and a bore defined in the housing along the shape for flow of the fluid stream therethrough; a leading portion at a first end of the bore; a trailing portion at a second end of the bore; the exterior shape being contoured convex at the leading portion; restriction means in the bore for internal flow regulation; first plurality of port means from the bore to the exterior of the housing in the leading portion for providing boundary layer control; first annular fluid passageway means in the housing downstream of the first port means outboard of the bore and coupled to the bore upstream of the restriction means and ported to the exterior to cooperate with the bore to provide a lower pressure area for the fluid which flows into the first passageway means; and sensor means to measure the parameter supported in the first passageway means between the coupling to the bore and the porting to the exterior.