Wing in Ground Effect over a Wavy Surface

Jean, BUTOESCU Valentin Adrian

doi:10.13111/2066-8201.2018.10.2.15

INCAS BULLETIN

2018

DOI: 10.13111/2066-8201.2018.10.2.15

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Wing in Ground Effect over a Wavy Surface

BUTOESCU Valentin Adrian Jean¹

Abstract: Abstract:A vortex method has been used to investigate the effect of a wavy ground on the aerodynamic forces acting on a wing that flies in its proximity. The air is considered inviscid and incompressible. The problem is obviously unsteady, and the solutions were found numerically.

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2022

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High Precision Height Control for Wing-in-Ground Crafts

Mei

Shan

et al. 2022

International Journal of Aerospace Engineering

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The wing-in-ground effect craft (WIG craft) is a kind of vehicle that flies close to the ground to achieve a flight with low aerodynamic drag and high lift. A robust and precise height control system is essential to ensure small WIG crafts fly safely in ground effect. In this paper, the performance of different high precision height control systems based on PID controllers is investigated numerically with different altitude disturbances. The results show that a control system that operates throttle, elevators, and flaps to control the altitude of the aircraft (TPF control system) results in the minimum overshoot, undershoot, rising tine, and settling time recovering from a disturbed altitude, with fluctuation in pitch angle. Compared to the TPF control system, even though the control system that operates throttle and flaps (TF control system) has a longer settling time and a higher overshoot, it has a smaller oscillation in pitch angle during a disturbed altitude. In addition, operating the throttle helps reduce the change of flight velocity during altitude disturbance. Furthermore, simulation results based on the TPF control system, show that the ground effect has little influence on the performance of control systems.

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High Precision Height Control for Wing-in-Ground Crafts

Mei

Shan

et al. 2022

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

show abstract

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Wing in Ground Effect over a Wavy Surface

Abstract: Abstract:A vortex method has been used to investigate the effect of a wavy ground on the aerodynamic forces acting on a wing that flies in its proximity. The air is considered inviscid and incompressible. The problem is obviously unsteady, and the solutions were found numerically.

Cited by 1 publication

References 2 publications

High Precision Height Control for Wing-in-Ground Crafts

High Precision Height Control for Wing-in-Ground Crafts

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