Imperial College London
Alternate

DrGiulianoAllegri

Faculty of Engineering, Department of Aeronautics

Honorary Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 5086g.allegri

 
 
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Location

 

212City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ajaj:2014:10.1177/1045389X13502869,
author = {Ajaj, RM and Friswell, MI and I, Saavedra Flores E and Keane, A and Isikveren, AT and Allegri, G and Adhikari, S},
doi = {10.1177/1045389X13502869},
journal = {Journal of Intelligent Material Systems and Structures},
pages = {989--1008},
title = {An integrated conceptual design study using span morphing technology},
url = {http://dx.doi.org/10.1177/1045389X13502869},
volume = {25},
year = {2014}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A comprehensive conceptual design study is performed to assess the potential benefits of span morphing technology and to determine its feasibility when incorporated on medium altitude long endurance unmanned air vehicles. A representative medium altitude long endurance unmanned air vehicle based on the BAE Systems Herti unmanned air vehicle was selected. Stability and control benefits are investigated by operating the morphing span asymmetrically to replace conventional ailerons. The Tornado vortex lattice method was incorporated for aerodynamic predictions. The sensitivity of rolling moment generated by span morphing for different flight parameters (instantaneous vehicular weight and angle of attack) is studied. The variation of roll rate (steady and transient response) with span morphing (for constant rolling moment) for different rolling strategies (extension and retraction) is investigated. It turns out that the optimum rolling strategy is to extend one side of the wing by 22% while retract the other by 22%. Operational performance benefits are investigated by operating the morphing span symmetrically to reduce drag, increase endurance and reduce take-off and landing distances. Twenty-two per cent symmetric span morphing reduces the total drag by 13%, enhances the endurance capability by 6.5% and reduces the take-off field length and landing distance by 28% and 10%, respectively. © 2013 The Author(s).
AU  - Ajaj,RM
AU  - Friswell,MI
AU  - I,Saavedra Flores E
AU  - Keane,A
AU  - Isikveren,AT
AU  - Allegri,G
AU  - Adhikari,S
DO  - 10.1177/1045389X13502869
EP  - 1008
PY  - 2014///
SN  - 1045-389X
SP  - 989
TI  - An integrated conceptual design study using span morphing technology
T2  - Journal of Intelligent Material Systems and Structures
UR  - http://dx.doi.org/10.1177/1045389X13502869
VL  - 25
ER  -
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