Actively-Controlled Morphing Wing Adaptive Skin for Enhanced Aircraft Control and Performance/technology-offers/5997/actively-controlled-morphing-wing-adaptive-skin-for-enhanced-aircraft-control-and-performance
To meet the ever increasing demand for more efficient, robust, and cost effective aircraft wing designs, conventional control surface methodologies need to be replaced by “morphing” technologies. Brunel University has developed a viable and realistic active wing/blade twist technology with an adaptive skin for seamless and adjustable changes in wing/blade twist angle. The technology is the ability to maintain a rigid skin with a low drag (smooth surface finish) despite high twist deformation during operation. Moreover, the structure is lightweight, and strong enough to carry aerodynamic loads.
Description of the technology
Traditional aircraft wing designs, though widespread, have some considerable aerodynamic drawbacks. The use of discrete control surfaces (Elevators, Rudder, Ailerons) to control airflow around the aircraft is known to cause flow separation, especially at the limit of control surface deflections. To meet the ever increasing demand for more efficient, robust, and cost effective designs, there is an argument that conventional control surface methodologies need to be re-examined, in favour of “morphing” technologies and techniques.
Morphing technologies typically revolve around adaptive geometry structures and mechanisms and are very attractive to aircraft designers as they can provide substantial benefits to aircraft performance. However, even with the substantial research efforts over the last few decades morphing concepts still suffer significant challenges. These include added weight, insufficient structural integrity, excessive actuation loads, and inadequate surface continuity or rigidity under aerodynamic load.
A critical component of any compliant morphing structure is the morphing skin or surface. The skin must be flexible for actuation, but also rigid enough to resist airflow pressures which could otherwise reduce aerodynamic performance. Compounding these requirements is the need for the surface to remain smooth with minimal wrinkling around the underlying movable mechanisms.
In response to these challenges, Brunel University has developed a viable, realistic solution in the form of an active wing/blade twist technology with an adaptive skin for seamless and adjustable changes in wing/blade twist angle.
The following video is a demonstration of a test model aircraft built with the twisting technology in action:
The following video is a demonstration of a test flight of a model aircraft built with the twisting technology:
This technology also provides a novel alternative to existing mechanisms for example the possibility of morphing winglets to enhance the performance and controllability of the aircraft.
The important benefit of this technology is the ability to maintain a rigid skin with a low drag (smooth surface finish) despite high twist deformation during operation. Moreover, the structure is lightweight, and strong enough to carry aerodynamic loads. Compared with other mechanisms in the literature, this new design meets most, if not all, of the lingering challenges to morphing wing technologies and has been demonstrated in flight.
In experimental tests, Brunel’s morphing system was found to have achieved the highest ratio of Lift/Drag compared to aileron wing cases.
The design also achieved the highest ratio of Roll Moment/Drag compared to aileron wings.
Overall Preliminary flight tests show similar performance to traditional wing performance.
The concept has also demonstrated and met the following three main requirements:
Adequate resistance to aerodynamic bending
Sufficient compliance in twist for adequate roll performance
Maintain a rigid, smooth, and continuous surface
Unmanned Aerial vehicles (from small drones to large UAVs)
Helicopter blade optimisation
Wind turbine blade optimisation
Intellectual property status
Patent already applied for
Patent application number :
Where : WO 2018/046936
Current development status
Desired business relationship
New technology applications
Adaptation of technology to other markets
Brunel University London
Technology Transfer Office
Industrial manufacturing, Material and Transport Technologies
Transport and Shipping Technologies
Aeronautical technology / Avionics
Renewable Sources of Energy
About Brunel University London
Technology Transfer Office from United Kingdom
Brunel University London
Our world-leading research focuses on those areas in which we can integrate academic rigour with the needs of governments, industry and the not-for-profit sector, delivering creative solutions to global challenges and bringing economic, social and cultural benefit.
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Brunel's three Research Institutes: Institute of Environment, Health and Societies, Institute of Energy Futures and Institute of Materials and Manufacturing, bring together academics from most of our research areas to collaboratively tackle very specific challenges to the world’s economy and society.
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