Effect of a Rotating and Swept Wingtip on Streamwise Gust Alleviation

Gust Alleviation Based on Magnetorheological Dampers and Linear Matrix Inequalities

10.26678/abcm.cobem2019.cob2019-1525 ◽

2019 ◽

Author(s):

Pedro Stangarlin ◽

Frederico Ribeiro ◽

Douglas Bueno

Keyword(s):

Linear Matrix Inequalities ◽

Linear Matrix ◽

Matrix Inequalities ◽

Magnetorheological Dampers ◽

Gust Alleviation

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Gust Alleviation Control using Prior Gust Information: Wind Tunnel Test Results

IFAC-PapersOnLine ◽

10.1016/j.ifacol.2019.11.125 ◽

2019 ◽

Vol 52 (12) ◽

pp. 128-133

Author(s):

Yoshiro Hamada ◽

Kenichi Saitoh ◽

Noboru Kobiki

Keyword(s):

Wind Tunnel ◽

Wind Tunnel Test ◽

Test Results ◽

Gust Alleviation

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Gust Mitigation of Micro Air Vehicles Using Passive Articulated Wings

The Scientific World JOURNAL ◽

10.1155/2014/598523 ◽

2014 ◽

Vol 2014 ◽

pp. 1-10 ◽

Cited By ~ 9

Author(s):

Adetunji Oduyela ◽

Nathan Slegers

Keyword(s):

Experimental Validation ◽

Micro Air Vehicles ◽

Flight Test ◽

Analytical Investigation ◽

Micro Air Vehicle ◽

Gust Alleviation ◽

Air Vehicle ◽

Lifting Surfaces ◽

Gust Mitigation ◽

Air Vehicles

Birds and insects naturally use passive flexing of their wings to augment their stability in uncertain aerodynamic environments. In a similar manner, micro air vehicle designers have been investigating using wing articulation to take advantage of this phenomenon. The result is a class of articulated micro air vehicles where artificial passive joints are designed into the lifting surfaces. In order to analyze how passive articulation affects performance of micro air vehicles in gusty environments, an efficient 8 degree-of-freedom model is developed. Experimental validation of the proposed mathematical model was accomplished using flight test data of an articulated micro air vehicle obtained from a high resolution indoor tracking facility. Analytical investigation of the gust alleviation properties of the articulated micro air vehicle model was carried out using simulations with varying crosswind gust magnitudes. Simulations show that passive articulation in micro air vehicles can increase their robustness to gusts within a range of joint compliance. It is also shown that if articulation joints are made too compliant that gust mitigation performance is degraded when compared to a rigid system.

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