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Air Data Calibration and Measurement
Simultaneous Calibration of Air Data Systems (SCADS)
The Flight Research Laboratory has developed an air data in-flight calibration technique using a 5-hole probe to measure air data parameters, combined with special flight patterns and accurate DGPS positioning information.
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| Schematic of Airplane Wind Box Formation |
The wind box shown below is used to perform the calibration including the use of Beta sweeps, accel and then 2-3-1-1 control input steps with 3 repeats. The system has been implemented on a number of laboratory aircraft and can in principle be used on any aircraft requiring accurate air data calibration. Several refinements of the technique are now under development including RT-SCADS and RAMI using DGPS information.
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| Schematic of Airplane Wind Box Formation |
