Aerodynamic Stall Modeling for the Cessna Citation II
L.J. van Horssen
D.M. Pool – Mentor
C.C. de Visser – Mentor
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Abstract
In 2019 all air-carrier pilots are obliged to go through flight simulator-based stall recovery training. Therefore simulators will have to be equipped with accurate flight models at high angles of attack. This research shows which stall characteristics can be modeled using flight data from symmetrical induced, quasi-steady stalls. Furthermore a well-known stall model structure is used, based on Kirchoff’s flow separation theory. It is shown that the hysteresis effect can be estimated using quasi-steady stall maneuvers. Aerodynamic terms related to the pitch rate, however, are not identifiable using such maneuvers. Transient effects on the other hand, which are normally only expected with highly dynamic maneuvers, could be estimated using the accelerations caused by the stall buffet. Lastly a stall buffet model is proposed, based on power spectral density analysis of the acceleration measurements.