Analysis of Flap Mechanism Reliability

Zhou, Jie; Sun, ZhengMing; Song, Qinglin

doi:10.2991/icmeit-17.2017.133

Cited by 2 publications

(1 citation statement)

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“…This facilitates the takeoff and landing of the aircraft [3,4]. Moreover, by adjusting the position of the flaps during flight, the aircraft's aerodynamic characteristics can be regulated, resulting in varying levels of drag [5].…”

Section: Introductionmentioning

confidence: 99%

Influence of flaps deflection angle on aerodynamic performance of aircraft

2023

TNS

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Flaps, as one of the lift-augmentation devices installed on aircraft, provide sufficient lift during takeoff and landing phases. By installing flaps on the wing, the wing area can be increased, and the wing curvature can be modified. by adjusting the position of the flaps, the aircrafts aerodynamic characteristics can be regulated. This article focuses on studying the impact of forces on trailing edge flaps during takeoff. As finding the appropriate angle of deflection is a crucial factor in improving flight efficiency, this article primarily investigates the influence of flap deflection angles on the aerodynamic forces acting on the aircraft during low-speed flight. The Flow Simulation module is utilized for the analysis of the flow field. The relation between lift and tilt angle of the flap is obtained from numerical simulations. Through the analysis, for the chosen type of flaps configuration, the optimal flap angle for takeoff is 45. This article may offer a reference for the design of flaps.

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Section: Introductionmentioning

confidence: 99%

Influence of flaps deflection angle on aerodynamic performance of aircraft

2023

TNS

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Study on dynamic simulation of hinged flap mechanism considering wear evolution

FENG,

TANG,

XUE

et al. 2024

西北工业大学学报

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Due to the significant differences in aerodynamic loads offlaps at different positions, there are also significant differences in the loads borne by bearings at different flap angles. This leads to inconsistent wear depth of bearings at different angles. Therefore, the method of introducing uniform wear depth is difficult to apply to the dynamic characteristics analysis of flaps. To address this issue, a dynamic modeling method based on the least squares method is proposed. Firstly, based on the connection characteristics of the flap surface, the C-B method is used to make it flexible, and the RBE2 element is used to establish a rigid flexible coupling dynamic model. On this basis, combining with UAMP, DISP and UMESHMOTION subroutines, the uneven wear data of hinge bearings are obtained by using the wear evolution simulation. At the same time, the function relation among the wear depth, flap deflection angle, and friction coefficient is established via least squares fitting. Finally, the function relation is updated to the rigid-flexible coupling dynamic model by the offset of the hinge bearing center point and the friction coefficient of the ball pair, so as to obtain the dynamic response of the flap under the influence of wear, which verifies the applicability and effectiveness of the method. As wear progresses, the coaxiality of the inner and outer bearing shafts of the flaps decreases gradually, and the driving torque on the inner and outer sides increases accordingly. The maximum increase is 15.08%. This method can provide some support for designing the flap mechanism and bearing selection.

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Analysis of Flap Mechanism Reliability

Cited by 2 publications

References 0 publications

Influence of flaps deflection angle on aerodynamic performance of aircraft

Influence of flaps deflection angle on aerodynamic performance of aircraft

Study on dynamic simulation of hinged flap mechanism considering wear evolution

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