Five-Hole Flow Angle Probe Calibration from Dynamic and Tower Flyby Maneuvers

Parameswaran, V and Jategaonkar, RV and Press, M (2005) Five-Hole Flow Angle Probe Calibration from Dynamic and Tower Flyby Maneuvers. Journal of Aircraft, 42 (1). pp. 80-86. ISSN 0021-8669

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Flight-test and data analysis techniques applied to calibrate the static pressure measured by pitot static systems and the flow angles measured by a five-hole probe mounted on a noseboom are described.13; Dynamic maneuvers with rapid variations in the aircraft motion are analyzed by application of parameter estimation techniques based on he output error method to calibrate the angle of attack and angle of sideslip. A complementary approach based on the Kalman filter technique is applied to a wind-box maneuver to calibrate the flow variables. The tower flyby maneuvers are analyzed using the classical approach of altitude determination through geometrical evaluation of photographs,and accurate information is derived from redundant sources to calibrate the pitot static system. The investigations showed that the static pressure measured by aircraft-installed pitot13; static system is accurate, sufficiently whereas that measured by an additional sensor mounted on the noseboom required speed-dependent correction. The flight estimated sensitivity factors for the flow angles measured by the five-hole probe agreed reasonably well with the manufacturer's specifications subject to corrections for biases resulting from misalignment and time delays caused by the recording equipment.

Item Type: Article
Uncontrolled Keywords: Calibration;Flow measurement;Aircraft maneuvers;Static pressure;Sensitivity analysis;Angle of attack;Dynamical systems;Photographs;Kalman filters;Parameter estimation
Subjects: AERONAUTICS > Aircraft Stability and Control
Depositing User: Ms Indrani V
Date Deposited: 26 Oct 2005
Last Modified: 24 May 2010 04:09

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