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Addressing Frequency Response Effects In Automotive Aerodynamic Pressure Measurements

Because the aerodynamic point of interest, and point of measurement, is connected via a tube to the pressure sensor, or scanner, there can be detrimental effects in the measurement.

These are often categorised under the broad term of Frequency Response Effects.
It’s usually unavoidable, as it’s very difficult, because of the physical size of the scanner, to locate it exactly where you want to measure. For example, an aerodynamic surface may be many metres from the nearest place you can locate your scanner.

This is a complicated subject – there have been many studies over the years by universities, research establishments and even NASA to try to understand and correct for this phenomenon.

The effect is hard to measure or quantify, as there are so many variables that contribute to the offset that is created by the tubing. However we have identified this is an application where EvoScann® P-Series pressure scanners can help.

Click here to view the application note and learn how to minimise Frequency Response Effects in your aerodynamic pressure measurements.

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