• This event consists of two rounds - the first one being an online abstract round which is eliminative in nature and the final one being a simulation round.

• Participants need to design an aeroplane model and analyse their design using the specified software.

• The abstract should be related to aero-modelling and aerodynamic analysis, which will be judged in order to select participants for the final round.

      Problem Statement:

• Design a NACA 0009 foil for the elevator and fin. Re panel the foil to make it more analyzable by X foil with any value between 100-150 panels. Define an Analysis and choose the wise and optimum TYPES among the mentioned four types and describe what those types infer? And explain the reason behind choosing that analysis. Consider Re value as 100000, and remaining parameters are unchanged. Analyze and observe the Cp vs. X graph, also tell briefly what Cp is? For both positive and negative angles of attacks, analyze the foil.

             For example, for positive AoA like 0 to 12^o for negative AoA like 0 to -8^o

• Do you know why we are starting with 0^o for both positive and negative AoA’s?
• Import another airfoil AG25 or NACA 1410, choose the optimum airfoil from them for performing batch analysis with NACA 0009 with batch variables like Reynold’s Number ranging from 20k to 1M value and specify the same range of AoA as you preferred for the NACA 0009 with an increment of 0.5^o and observe if everything is fine with Cl vs. Cd graph? If not, then try changing the range of AoA and with an increment of 0.25^o.

• From the optimal airfoil that you have chosen for the earlier problem among AG25 and NACA 1410, perform analysis and attach the Cl vs. AoA and Cd vs. AoA graphs. What do you infer from those two graphs? Can you see any significant changes in the graph? What would you think to be the reason for it? After finding the reason, define an Analysis and select a suitable type among the four types, with transition criteria as 1 for both top and bottom surfaces and analyze it between the starting at 10k and ending at 100k with ∆=5,000 at fixed AoA. Attach Cl vs. Re graph, Cd vs. Re graph, and explain what you infer from these graphs? Can you find anything that significantly changes the Cl value from graphs?
• Now try the same with different transition criteria; for example, at 1/3^rd of top and bottom surfaces. What would you think about the behavior? Will it increase or decrease, and can you relate this to ‘golf ball with dimples on it’ ? Discuss it, and write what you inferred from the two graphs?

            Sample graph: (make sure that the lines are thick and bright)