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Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bengaluru 
Wing and Propeller System, Method of Optimizing Wing and Propeller/Rotor System and Method of Reducing Induced Drag.  
Roddam Narasimha, Suresh Madhusudan Deshpande, Praveen Chandrashekarappa, Rakshith Belur Raghavan 
Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bengaluru 
Application type:
Granted - 2019-10-17 
Application Number:
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Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bengaluru 
The disclosure relates to Aeronautics, more particularly relating to wing planforms that reduce wing drag substantially in aircraft driven by propellers or other rotors in tractor configuration. An aircraft comprising a wing and propeller system (1), said system comprising wing planform (2) characterized into wing chord regions (3) behind each propeller/rotor (5) whose length is relatively varied with respect to length of wing chord regions (4) at outboard of the propeller/rotor (5) towards wing tip and/or at inboard of the propeller (5) towards fuselage, and plurality of propellers (5) fixed ahead of wing leading edge such that induced drag is reduced by exploiting the velocity field generated by the slipstream of the propeller (5). Also, provides for a method of optimizing wing and propeller system and a method reducing induced drag, among other possible parameters of interest.  

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