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http://dx.doi.org/10.5139/JKSAS.2017.45.7.531

Calibration and Flight Test Results of Air Data Sensing System using Flush Pressure Ports  

Lee, Chang-Ho (Aerodynamics Research Team, Korea Aerospace Research Institute)
Park, Young-Min (Aerodynamics Research Team, Korea Aerospace Research Institute)
Chang, Byeong-Hee (Aerodynamics Research Team, Korea Aerospace Research Institute)
Lee, Yung-Gyo (Aerodynamics Research Team, Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.45, no.7, 2017 , pp. 531-538 More about this Journal
Abstract
A flush air data sensing system, which can predict flight speed, angle of attack, and angle of sideslip of the aircraft is designed and manufactured for a small UAV. Two kinds of flush pressure ports, four ports and five ports, are tapped at the same section of fuselage nose-cone. Calibration pressure data at flush ports are obtained through computations for the total aircraft by using Fluent code. Angle of attack, angle of sideslip, total pressure, and static pressure are represented with 4th-order polynomial function and calibration coefficient matrix is obtained using least square method with calibration pressure data. Flight test showed that flight speed, angle of attack, and sideslip angle predicted by four flush ports and five flush ports compared well with those by five-hole probe installed for data comparison. Especially four flush ports revealed nearly same results as those by five flush ports.
Keywords
Unmanned Aerial Vehicle; Flush Air Data Sensing System; Flush Pressure Port; 5-Hole Pressure Probe; Least Square Method;
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  • Reference
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