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Numerical Flow Investigation of Morphing Leading Edges for the Enhancement of Maneuverability of Unmanned Combat Air Vehicles

Rütten, Markus and Saalfeld, Birgit and Künemund, Jens and Saalfeld, Stefan and Rein, Martin (2012) Numerical Flow Investigation of Morphing Leading Edges for the Enhancement of Maneuverability of Unmanned Combat Air Vehicles. AIAA Fluid Dynamics and Co-located Conferences and Exhibit, 25.-28. Juni 2012, New Orleans, Louisiana, USA. doi: 10.2514/6.2012-3326.

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Official URL: http://www.aiaa.org


Observing the progress in the technology of unmanned combat aerial vehicles (UCAVs) than it can be foreseen that in future the role of manned combat aircraft will be taken over more and more by unmanned systems. The abandonment of pilots allows for more freedom in the aerodynamic and structural design of vehicles in regard to weight or acceleration. However, new stealth constraints will have a severe impact on the freedom of scope. The design of UCAV configurations is driven by the special requirements of up-coming missions, as for instance the capabilities of long endurance flights joined with low observability. The new military demands have a crucial impact on the aerodynamic shape, and, hence, require new solutions for maneuver control in respect to integration of engine in- and outlets, ailerons and rudders, actuators and other devices. In particular UCAVs are suited to the exploitation of non-conventional control technologies, such as aerodynamic morphing, flow control, or thrust vectoring. This paper presents a numerical investigation of innovative leading edge morphing for aircraft applications and explores the feasibility of such technologies to enhance the manoeuverability of unmanned combat aerial vehicles. It is in particular concerned with the investigation of effectiveness of morphing devices for the aerodynamic control of UCAVs under the special constraints of needed low radar signature. One focal point of this work is the possibility to generate additional lift or role moments for UCAVs flying at different angles of attack without using classical flaps which would increase the risk of detection by higher radar signatures. Therefore, the objective of the numerical investigations is the evaluation of the potential and limitations of morphing leading edges especially for the enhancement of the maneuverability of Delta- and Lambda-wing configurations with their vortex-dominated flow field. Of special interest is flow control at high angles of attack (AoA) by targeting a minimized shape adaptation in order to generate needed additional lift, to induce rolling moments or to reduce the risk of the potential deleterious effects of vortex breakdown.

Item URL in elib:https://elib.dlr.de/75555/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Numerical Flow Investigation of Morphing Leading Edges for the Enhancement of Maneuverability of Unmanned Combat Air Vehicles
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Refereed publication:No
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:No
DOI :10.2514/6.2012-3326
Page Range:pp. 1-17
Series Name:Conference Proceedings online
Keywords:Morphing Wing, Flow Control, Vortical Flows
Event Title:AIAA Fluid Dynamics and Co-located Conferences and Exhibit
Event Location:New Orleans, Louisiana, USA
Event Type:international Conference
Event Dates:25.-28. Juni 2012
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Danzer, Kristina
Deposited On:20 Nov 2012 15:17
Last Modified:23 Nov 2012 11:21

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