The compressibility effects on the inherent stability of Wing-In-Ground crafts

Su, Shanfei; Shan, Xiaowen; Wang, Hao

doi:10.2514/6.2022-2572

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…According to simulation results in OpenVSP, a one-degree change in flap angle translates to a 0.01 change in lift coefficient. Aerodynamic data can be obtained from the work of Su et al [21]. Then, those parameters are put into Equation (1) to get the rate of change over time of five fundamental quantities ðV, α, q, θ, hÞ.…”

Section: Stability Simulation and Controlmentioning

confidence: 99%

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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Section: Stability Simulation and Controlmentioning

confidence: 99%