# Flexible Wing Theoretical Model

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DEVELOPMENT OF A MATHEMATICAL MODEL FOR FLEXIBLE WINGS - USING VORTEX PANEL METHODS Supervisor: Dr. T N Venkatesh Student: Sree Raghav R OUTLINE: Flexible wing is the term used to describe the wings that are made of fabric materials and are used in flying machines like powered hang gliders. The uniqueness and behavior of a flexible wing, that distinguishes it from a conventional rigid wing is that the camber of the wing varies with respect to the dynamic pressure (i.e. flight velocity), which signifies that it has a complex behavior. From the experimental studies made at NAL, it has been clearly seen that the angle of attack regime in which a powered hang glider operates is entirely…show more content…
No major step has been to make a generalized mathematical model for flexible wings. The only research data available are from literature are “Flight Mechanics Analysis of a Motorized Trike with Composite Wing” (E. Carrera and C. Cosatto), “Aerodynamics, Aero elasticity, and Stability of Hang Gliders - Experimental Results” (studies made by Ilan M Kroo), “Modeling the flight dynamics of the hang glider” (M. V. Cook and M. Spottiswoode), “Aerodynamic Analysis of a Class II High-Performance Hang Glider– The ATOS” (Xiao Huang, Kiran K Pippalapalli, Bernd Budoba) and many other user manuals which give many thumb rules for flying. All these studies have concentrated dominantly on the flight mechanics of the flexible wing aircrafts based on observational studies. Also, seldom studies have been done on the regimes of induced turbulence due to the mechanical sources (like bridges), which contains vortices of all scales. As mentioned earlier, they give a great response to turbulence while flying a low speeds, such a study of flying in wake region is mandatory. The flexible wings (Rogallo wings) could be extended to unmanned aerial vehicles and micro aerial vehicles, since rogallo wings are capable of carrying high payloads (i.e. high wing loading…show more content…
• Implementing the turbulence studies and trying to incorporate this in the design of UAVs and MAVs (as a future scope of the research) TECHNICAL PROGRAMME: • A detailed analytical study has to be made to understand the aerodynamics of the available wings (for which data is available). • Make studies about vortex panel methods and sorting out a way to implement them for simulating flows over flexible