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Erschienen in:

2021 | OriginalPaper | Buchkapitel

Numerical Study of Dynamic 2D Bumps for Active Gust Load Alleviation

verfasst von : Junaid Ullah, Ferdinand Seel, Thorsten Lutz

Erschienen in: New Results in Numerical and Experimental Fluid Mechanics XIII

Verlag: Springer International Publishing

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Abstract

Gust loads on aircraft are critical for structural design. This paper investigates local bump-like modifications in the leading edge region on a generic supercritical airfoil at transonic inflow conditions for the purpose of gust load alleviation. Several parameters are studied to identify a sweet spot for gust load compensation. These include the bump’s height, its streamwise position, its streamwise extension and its oscillation frequency. The evaluations of the URANS simulations reveal that the bumps as investigated in this work are not applicable for compensation of gust induced lift. However, dynamic bumps enable a compensation of approx. 20% of the gust induced pitching moment. A comparison of dynamic bumps with an oscillating trailing edge flap (TEF) and leading edge flap (LEF) reveals the superiority of the flaps for gust load mitigation, especially when a load factor of one is targeted throughout the critical gust event. The qualitative effect of dynamic leading edge bumps on the surrounding flow field is found to be similar to the one caused by oscillating LEF.

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Nächstes Kapitel Steady-State Flow Solutions for Delta Wing Configurations at High Angle of Attack Using Implicit Schemes

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Titel: Numerical Study of Dynamic 2D Bumps for Active Gust Load Alleviation
verfasst von: Junaid Ullah
Ferdinand Seel
Thorsten Lutz
Verlag: Springer International Publishing
Buch: New Results in Numerical and Experimental Fluid Mechanics XIII
Print ISBN: 978-3-030-79560-3

Electronic ISBN: 978-3-030-79561-0

Copyright-Jahr: 2021
DOI: https://doi.org/10.1007/978-3-030-79561-0_25

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