• M Sivapragasam

      Articles written in Resonance – Journal of Science Education

    • How Do Wings Generate Lift? 1. Popular Myths, What They Mean and Why They Work

      M D Deshpande M Sivapragasam

      More Details Abstract Fulltext PDF

      How lift is generated by a moving wing is understood satisfactorily.But the rigorous explanation requires elaboratetheoretical background, and hence there are many simplerexplanations in the popular literature. In the first part of thisarticle, some such popular models are discussed after brieflydealing with some required preliminary ideas. The concludingpart of the article will deal with some simple quantitativemodels and then tie up many of these simple ideas and propositionstogether to the rigorous momentum conservation principleplacing these popular models in perspective.

    • How Do Wings Generate Lift? 2. Myths, Approximate Theories and Why They All Work

      M D Deshpande M Sivapragasam

      More Details Abstract Fulltext PDF

      A cambered surface that is moving forward in a fluid generateslift. To explain this interesting fact in terms of simplermodels, some preparatory concepts were discussed in thefirst part of this article. We also agreed on what is an acceptableexplanation. Then some popular models were discussed.Some quantitative theories will be discussed in this concludingpart. Finally we will tie up all these ideas together andconnect them to the rigorous momentum theorem.

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