Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran
Abstract
Microbursts pose a severe hazard to aircraft operating at low altitudes, particularly during takeoff and landing phases in aviation. To precisely evaluate an aircraft's dynamic response within a microburst, it is critical to apply variable wind loads not only to the center of gravity but also across the wing and tail surfaces. Consequently, the multi-point model exhibits clear advantages over traditional aerodynamic models employed in recent studies. This approach involves recalculating aerodynamic forces and moments through integration of the non-uniform, spatially varying microburst wind load function over each surface. The method facilitates real-time updates to aerodynamic coefficients by resolving the aircraft's six degree of freedom equations of motion amid temporally and spatially evolving wind shear. Simulations comparing multi-point and single-point models revealed substantial disparities in aerodynamic force and moment coefficients. Given the risks associated with flight testing aircraft in actual microbursts, hazardous maneuvers are precluded to acquire validation data experimentally. Accordingly, the proposed model is verified using advanced numerical techniques, including Computational Fluid Dynamics analyses at selected flight instants as well as Etkin’s four points model to assess the aircraft’s dynamic performance. Results affirmed the multi-point loading approach with an acceptable margin of error.
Pourmoradi,A. and Sabzehparvar,M. (2025). Computing Aerodynamic Coefficients of Aircraft in Microburst Using Multi-point Loading Methodology. Journal of Technology in Aerospace Engineering, (), 1-22.
MLA
Pourmoradi,A. , and Sabzehparvar,M. . "Computing Aerodynamic Coefficients of Aircraft in Microburst Using Multi-point Loading Methodology", Journal of Technology in Aerospace Engineering, , , 2025, 1-22.
HARVARD
Pourmoradi A., Sabzehparvar M. (2025). 'Computing Aerodynamic Coefficients of Aircraft in Microburst Using Multi-point Loading Methodology', Journal of Technology in Aerospace Engineering, (), pp. 1-22.
CHICAGO
A. Pourmoradi and M. Sabzehparvar, "Computing Aerodynamic Coefficients of Aircraft in Microburst Using Multi-point Loading Methodology," Journal of Technology in Aerospace Engineering, (2025): 1-22,
VANCOUVER
Pourmoradi A., Sabzehparvar M. Computing Aerodynamic Coefficients of Aircraft in Microburst Using Multi-point Loading Methodology. j. Technol. Aerosp. Eng., 2025; (): 1-22.
