NATO STO Task Group AVT-201 on 'Extended Assessment of Reliable Stability & Control Prediction Methods for NATO Air Vehicles' is studying various computational approaches to predict stability and control parameters for aircraft undergoing non-linear flight conditions. This paper contributes an assessment through correlations with wind tunnel data for the state of aerodynamic predictive capability of time-accurate RANS methodology on the group's focus configuration, a 53deg swept and twisted lambda wing UCAV, undergoing a variety of roll, pitch, and yaw motions. The vehicle aerodynamics is dominated by the complex non-linear physics of round leading-edge vortex flow separation. Correlations with experimental data are made for static longitudinal/lateral sweeps, and at varying frequencies of prescribed roll/pitch/yaw sinusoidal motion for the vehicle operating with and without control surfaces. The data and the derived understanding should prove useful to the AVT-201 team and other researchers who are developing techniques for augmenting flight simulation models from low-speed CFD predictions of aircraft traversing non-linear regions of a flight envelope.
Stability and Control CFD Investigations of a Generic 53 Degree Swept UCAV Configuration
2014
27 pages
Report
Keine Angabe
Englisch
Fluid Mechanics , Flight simulation , Prediction analysis techniques , Computational fluid dynamics , Nonlinearity , Leading edges , Stability , Swept wings , Twisted wings , Flight conditions , Separated flow , North atlantic treaty organization(Nato) , Wind tunnel tests , Correlation , Control surfaces
Stability and Control CFD Investigations of a Generic 53^o Swept UCAV Configuration (AIAA 2014-2133)
British Library Conference Proceedings | 2014
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