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 NPTEL >> Courses >> Aerospace Engineering >> Flight Dynamics II (Stability) (Video) >> Lecture 1 : Earth Atmosphere, Aircraft components, Aircraft nomenclature
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 Question: please add assignments for better understanding of the subject. thanks By: raviteja     Date: 2012-09-10 Answer: We will surely look into your suggestions. thanks By: Dr. Nandan Kumar Sinha     Date: 2012-09-14

 Question: what is the difference between the derivation derived for wing contibution in airplane,stability and control by NElSON (text book) and stability by Perkeins(text book)? can we consider any1 of both? but perkeins derivation for wing contribution is goood? sir please give ur feedback on this. Thank By: kabirsaiprasanna     Date: 2012-11-11 Answer: There is no difference in derivation in the two books. You should interpret them correctly. One can refer to any of the two books, my personal favorite is Perkins among these two. By: Dr. Nandan Kumar Sinha     Date: 2012-11-16

 Question: sir we are calculating velocity during level flight V=sq(2W/SPCl)level flight means altitute 11km.g is slighty varied.if w is 500000N at see level, at 11km w is 498285.671N.i think its considarable error. By: venkatesan     Date: 2012-12-13 Answer: You should not play with weight. L = W is valid in level flight at any altitude. What you have to do is, keep weight constant (unless you want to account for consumed fuel weight in going from sea-level to 11km), and take the correct density of air at that altitude and then find the velocity that would be required to maintain the level flight condition. Change should be found in velocity and thus in thrust required and not in the weight. By: Dr. Nandan Kumar Sinha     Date: 2012-12-14
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