大型客机先进翼尖装置综合特性研究

doi:CNKI:11-1929/V.20111125.1301.003

Abstract

Abstract: Wingtip devices are commonly used on aircraft because of their good aerodynamic characteristics.However, the flutter characteristics of the aircraft are changed by the devices, and so is the structural weight.In order to explore the overall performance of the wingtip devices in a large civil aircraft, three kinds of wingtip devices (blended, sharklet, ladder) are studied in terms of aerodymaics, fluttering and weight by numerical simulation.There are obvious benefits from drag reduction by adding any of the three wingtip devices, but the structural weight increases as a result.The flutter velocity of the wing is reduced by adding a wingtip device.The results show that the flutter shape depends on the form of the wingtip device.The effect on the flutter velocity of the wing due to the form of the wingtip device is about 1%-7%, which is relatively small.And the overall weight benefits from drag reduction and the displacement of the pressure center can provide certain weight capa-city for the structural design.

Key words: wingtip device, aerodynamics, flutter, weight, large civil aircraft

CLC Number:

V212.11

QIAN Guangping, LIU Peiqing, YANG Shipu, DANG Yabin. A Comprehensive Study on Wingtip Devices in Large Civil Aircraft[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, (4): 634-639.

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A Comprehensive Study on Wingtip Devices in Large Civil Aircraft

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