ABSTRACT This work simulates and analyzes the behavior and performance of a light aircraft in steady level flight subjected to gust wind. A home-made code is developed using MATLAB to simulate the aircraft behavior using the nonlinear 6-DOF and the aerodynamics and engine model were utilized in this code. The gust model used in this analysis is sine-wave shaped gust. The aerodynamic behavior of this aircraft was investigated using CFD at different angles of attack and side slip angles. The x, y and z forces and moments were calculated at a flight speed of 50m/s and at sea level conditions. Lift and drag curves for different angles of attack were determined. The maximum lift coefficient for this aircraft was 1.67 at angle of attack of 17º ; the maximum lift to drag ratio (L/D) was found to be 13 at =2º, and the zero lift drag coefficient was 0.0342. Also, the yawing moment coefficient was determined for different side slip angles as well as rolling moment. The static stability of the aircraft was analyzed based on these results. Also, USAF digital DATCOM was used to estimate the dynamic derivatives of the vehicle. The engine was modeled by a simple model such that engine power and thrust vary with altitude and speed. The simulation results indicate that the aircraft is stable, controllable and the gust wind effect is eliminated and damped in a few seconds. In addition, the load factor increment due to gust effect is not critical.
Abdulla, M., & Hassan, T. (2014). ANALYSIS OF A LIGHT AIRCRAFT RESPONSE TO GUST WIND BASED ON NONLINEAR MODEL. The International Conference on Applied Mechanics and Mechanical Engineering, 16(16th International Conference on Applied Mechanics and Mechanical Engineering.), 1-13. doi: 10.21608/amme.2014.35764
MLA
M. M. Abdulla; T. M. Hassan. "ANALYSIS OF A LIGHT AIRCRAFT RESPONSE TO GUST WIND BASED ON NONLINEAR MODEL". The International Conference on Applied Mechanics and Mechanical Engineering, 16, 16th International Conference on Applied Mechanics and Mechanical Engineering., 2014, 1-13. doi: 10.21608/amme.2014.35764
HARVARD
Abdulla, M., Hassan, T. (2014). 'ANALYSIS OF A LIGHT AIRCRAFT RESPONSE TO GUST WIND BASED ON NONLINEAR MODEL', The International Conference on Applied Mechanics and Mechanical Engineering, 16(16th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-13. doi: 10.21608/amme.2014.35764
VANCOUVER
Abdulla, M., Hassan, T. ANALYSIS OF A LIGHT AIRCRAFT RESPONSE TO GUST WIND BASED ON NONLINEAR MODEL. The International Conference on Applied Mechanics and Mechanical Engineering, 2014; 16(16th International Conference on Applied Mechanics and Mechanical Engineering.): 1-13. doi: 10.21608/amme.2014.35764
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