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Static stability of Baseline-II blended wing- body aircraft at low subsonic speed: Investigation via computational fluid dynamics simulation

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7 Author(s)
Rizal E. M. Nasir ; Flight Technology & Test Centre (FTTC), Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia ; Wahyu Kuntjoro ; Wirachman Wisnoe ; Zurriati Mohd. Ali
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A study of the effect of canard to Baseline-II blended wing-body aircraft is presented here with emphasis on investigating contributions of canard's various setting angle to aerodynamic parameters and longitudinal static stability. A computational fluid dynamic (CFD) simulation has been conducted at low subsonic speed to collect aerodynamic data and found that its aerodynamic trend is similar to many BWB aircraft and consistent to previous studies conducted in UiTM. Canard setting angle affects the value of lift-at-zero incidence of a BWB aircraft, although fairly small for current canard size that it is not adequate to produce positive pitching moment-at-zero lift. Baseline-II is partially, statically stable in longitudinal motion because of negative moment change w.r.t. lift change but it has equilibrium incidence angle that only produces negative lift. Larger canard and/or modification to Baseline-II wing-body are needed to overcome this flaw. The location of new reference point provides ‘comfortable’ static margin. Data and mathematical characteristic obtained from BL-IIA SP CFD simulation is comparable to those from wind tunnel experiment and both show satisfactory-to-good correlation to theoretical calculations.

Published in:

Science and Social Research (CSSR), 2010 International Conference on

Date of Conference:

5-7 Dec. 2010